Merge branch 'master' into feature/pngExif

src/ImageSharp/ColorSpaces/CieLab.cs

@@ -20,11 +20,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// </summary>
         public static readonly CieXyz DefaultWhitePoint = Illuminants.D50;
 
-        /// <summary>
-        /// Represents a <see cref="CieLab"/> that has L, A, B values set to zero.
-        /// </summary>
-        public static readonly CieLab Empty = default;
-
         /// <summary>
         /// The backing vector for SIMD support.
         /// </summary>
@@ -83,11 +78,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <summary>
         /// Gets the reference white point of this color
         /// </summary>
-        public CieXyz WhitePoint
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get;
-        }
+        public CieXyz WhitePoint { get; }
 
         /// <summary>
         /// Gets the lightness dimension.
@@ -119,12 +110,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
             get => this.backingVector.Z;
         }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="CieLab"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <inheritdoc />
         public Vector3 Vector
         {
@@ -171,27 +156,18 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override int GetHashCode()
         {
-            unchecked
-            {
-                int hashCode = this.WhitePoint.GetHashCode();
-                hashCode = (hashCode * 397) ^ this.backingVector.GetHashCode();
-                return hashCode;
-            }
+            return HashHelpers.Combine(this.WhitePoint.GetHashCode(), this.backingVector.GetHashCode());
         }
 
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "CieLab [Empty]";
-            }
-
-            return $"CieLab [ L={this.L:#0.##}, A={this.A:#0.##}, B={this.B:#0.##}]";
+            return this.Equals(default)
+                ? "CieLab [Empty]"
+                : $"CieLab [ L={this.L:#0.##}, A={this.A:#0.##}, B={this.B:#0.##}]";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is CieLab other && this.Equals(other);

src/ImageSharp/ColorSpaces/CieLch.cs

@@ -20,11 +20,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// </summary>
         public static readonly CieXyz DefaultWhitePoint = Illuminants.D50;
 
-        /// <summary>
-        /// Represents a <see cref="CieLch"/> that has L, C, H values set to zero.
-        /// </summary>
-        public static readonly CieLch Empty = default;
-
         /// <summary>
         /// The backing vector for SIMD support.
         /// </summary>
@@ -83,11 +78,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <summary>
         /// Gets the reference white point of this color
         /// </summary>
-        public CieXyz WhitePoint
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get;
-        }
+        public CieXyz WhitePoint { get; }
 
         /// <summary>
         /// Gets the lightness dimension.
@@ -119,12 +110,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
             get => this.backingVector.Z;
         }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="CieLch"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <inheritdoc />
         public Vector3 Vector
         {
@@ -171,23 +156,15 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override int GetHashCode()
         {
-            unchecked
-            {
-                int hashCode = this.WhitePoint.GetHashCode();
-                hashCode = (hashCode * 397) ^ this.backingVector.GetHashCode();
-                return hashCode;
-            }
+            return HashHelpers.Combine(this.WhitePoint.GetHashCode(), this.backingVector.GetHashCode());
         }
 
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "CieLch [Empty]";
-            }
-
-            return $"CieLch [ L={this.L:#0.##}, C={this.C:#0.##}, H={this.H:#0.##}]";
+            return this.Equals(default)
+                ? "CieLch [Empty]"
+                : $"CieLch [ L={this.L:#0.##}, C={this.C:#0.##}, H={this.H:#0.##}]";
         }
 
         /// <inheritdoc/>

src/ImageSharp/ColorSpaces/CieLchuv.cs

@@ -20,11 +20,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// </summary>
         public static readonly CieXyz DefaultWhitePoint = Illuminants.D65;
 
-        /// <summary>
-        /// Represents a <see cref="CieLchuv"/> that has L, C, H values set to zero.
-        /// </summary>
-        public static readonly CieLchuv Empty = default;
-
         /// <summary>
         /// The backing vector for SIMD support.
         /// </summary>
@@ -83,11 +78,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <summary>
         /// Gets the reference white point of this color
         /// </summary>
-        public CieXyz WhitePoint
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get;
-        }
+        public CieXyz WhitePoint { get; }
 
         /// <summary>
         /// Gets the lightness dimension.
@@ -119,12 +110,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
             get => this.backingVector.Z;
         }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="CieLchuv"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <inheritdoc />
         public Vector3 Vector
         {
@@ -144,7 +129,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <returns>
         /// True if the current left is equal to the <paramref name="right"/> parameter; otherwise, false.
         /// </returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static bool operator ==(CieLchuv left, CieLchuv right)
         {
             return left.Equals(right);
@@ -162,36 +146,27 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <returns>
         /// True if the current left is unequal to the <paramref name="right"/> parameter; otherwise, false.
         /// </returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static bool operator !=(CieLchuv left, CieLchuv right)
         {
             return !left.Equals(right);
         }
 
         /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override int GetHashCode()
         {
-            unchecked
-            {
-                int hashCode = this.WhitePoint.GetHashCode();
-                hashCode = (hashCode * 397) ^ this.backingVector.GetHashCode();
-                return hashCode;
-            }
+            return HashHelpers.Combine(this.WhitePoint.GetHashCode(), this.backingVector.GetHashCode());
         }
 
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "CieLchuv [Empty]";
-            }
-
-            return $"CieLchuv [ L={this.L:#0.##}, C={this.C:#0.##}, H={this.H:#0.##}]";
+            return this.Equals(default)
+                ? "CieLchuv [Empty]"
+                : $"CieLchuv [ L={this.L:#0.##}, C={this.C:#0.##}, H={this.H:#0.##}";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is CieLchuv other && this.Equals(other);

src/ImageSharp/ColorSpaces/CieLuv.cs

@@ -22,11 +22,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// </summary>
         public static readonly CieXyz DefaultWhitePoint = Illuminants.D65;
 
-        /// <summary>
-        /// Represents a <see cref="CieLuv"/> that has L, U, and V values set to zero.
-        /// </summary>
-        public static readonly CieLuv Empty = default;
-
         /// <summary>
         /// The backing vector for SIMD support.
         /// </summary>
@@ -85,11 +80,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <summary>
         /// Gets the reference white point of this color
         /// </summary>
-        public CieXyz WhitePoint
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get;
-        }
+        public CieXyz WhitePoint { get; }
 
         /// <summary>
         /// Gets the lightness dimension
@@ -121,12 +112,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
             get => this.backingVector.Z;
         }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="CieLuv"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <inheritdoc />
         public Vector3 Vector
         {
@@ -173,27 +158,18 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override int GetHashCode()
         {
-            unchecked
-            {
-                int hashCode = this.WhitePoint.GetHashCode();
-                hashCode = (hashCode * 397) ^ this.backingVector.GetHashCode();
-                return hashCode;
-            }
+            return HashHelpers.Combine(this.WhitePoint.GetHashCode(), this.backingVector.GetHashCode());
         }
 
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "CieLuv [ Empty ]";
-            }
-
-            return $"CieLuv [ L={this.L:#0.##}, U={this.U:#0.##}, V={this.V:#0.##} ]";
+            return this.Equals(default)
+                ? "CieLuv [ Empty ]"
+                : $"CieLuv [ L={this.L:#0.##}, U={this.U:#0.##}, V={this.V:#0.##} ]";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is CieLuv other && this.Equals(other);

src/ImageSharp/ColorSpaces/CieXyChromaticityCoordinates.cs

@@ -14,11 +14,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
     /// </summary>
     internal readonly struct CieXyChromaticityCoordinates : IEquatable<CieXyChromaticityCoordinates>, IAlmostEquatable<CieXyChromaticityCoordinates, float>
     {
-        /// <summary>
-        /// Represents a <see cref="CieXyChromaticityCoordinates"/> that has X, Y values set to zero.
-        /// </summary>
-        public static readonly CieXyChromaticityCoordinates Empty = default;
-
         /// <summary>
         /// The backing vector for SIMD support.
         /// </summary>
@@ -69,12 +64,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
             get => this.backingVector.Y;
         }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="CieXyChromaticityCoordinates"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <summary>
         /// Compares two <see cref="CieXyChromaticityCoordinates"/> objects for equality.
         /// </summary>
@@ -112,6 +101,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
         }
 
         /// <inheritdoc />
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override int GetHashCode()
         {
             return this.backingVector.GetHashCode();
@@ -120,16 +110,12 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "CieXyChromaticityCoordinates [Empty]";
-            }
-
-            return $"CieXyChromaticityCoordinates [ X={this.X:#0.##}, Y={this.Y:#0.##}]";
+            return this.Equals(default)
+                ? "CieXyChromaticityCoordinates [Empty]"
+                : $"CieXyChromaticityCoordinates [ X={this.X:#0.##}, Y={this.Y:#0.##}]";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is CieXyChromaticityCoordinates other && this.Equals(other);

src/ImageSharp/ColorSpaces/CieXyy.cs

@@ -14,11 +14,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
     /// </summary>
     internal readonly struct CieXyy : IColorVector, IEquatable<CieXyy>, IAlmostEquatable<CieXyy, float>
     {
-        /// <summary>
-        /// Represents a <see cref="CieXyy"/> that has X, Y, and Y values set to zero.
-        /// </summary>
-        public static readonly CieXyy Empty = default;
-
         /// <summary>
         /// The backing vector for SIMD support.
         /// </summary>
@@ -78,18 +73,8 @@ namespace SixLabors.ImageSharp.ColorSpaces
             get => this.backingVector.Z;
         }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="CieXyy"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <inheritdoc />
-        public Vector3 Vector
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get => this.backingVector;
-        }
+        public Vector3 Vector => this.backingVector;
 
         /// <summary>
         /// Compares two <see cref="CieXyy"/> objects for equality.
@@ -128,6 +113,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
         }
 
         /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override int GetHashCode()
         {
             return this.backingVector.GetHashCode();
@@ -136,16 +122,12 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "CieXyy [ Empty ]";
-            }
-
-            return $"CieXyy [ X={this.X:#0.##}, Y={this.Y:#0.##}, Yl={this.Yl:#0.##} ]";
+            return this.Equals(default)
+                ? "CieXyy [ Empty ]"
+                : $"CieXyy [ X={this.X:#0.##}, Y={this.Y:#0.##}, Yl={this.Yl:#0.##} ]";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is CieXyy other && this.Equals(other);

src/ImageSharp/ColorSpaces/CieXyz.cs

@@ -14,11 +14,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
     /// </summary>
     internal readonly struct CieXyz : IColorVector, IEquatable<CieXyz>, IAlmostEquatable<CieXyz, float>
     {
-        /// <summary>
-        /// Represents a <see cref="CieXyz"/> that has X, Y, and Z values set to zero.
-        /// </summary>
-        public static readonly CieXyz Empty = default;
-
         /// <summary>
         /// The backing vector for SIMD support.
         /// </summary>
@@ -40,7 +35,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// Initializes a new instance of the <see cref="CieXyz"/> struct.
         /// </summary>
         /// <param name="vector">The vector representing the x, y, z components.</param>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public CieXyz(Vector3 vector)
             : this()
         {
@@ -78,12 +72,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
             get => this.backingVector.Z;
         }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="CieXyz"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <inheritdoc />
         public Vector3 Vector
         {
@@ -128,6 +116,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
         }
 
         /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override int GetHashCode()
         {
             return this.backingVector.GetHashCode();
@@ -136,16 +125,12 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "CieXyz [ Empty ]";
-            }
-
-            return $"CieXyz [ X={this.X:#0.##}, Y={this.Y:#0.##}, Z={this.Z:#0.##} ]";
+            return this.Equals(default)
+                ? "CieXyz [ Empty ]"
+                : $"CieXyz [ X={this.X:#0.##}, Y={this.Y:#0.##}, Z={this.Z:#0.##} ]";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is CieXyz other && this.Equals(other);

src/ImageSharp/ColorSpaces/Cmyk.cs

@@ -13,11 +13,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
     /// </summary>
     internal readonly struct Cmyk : IEquatable<Cmyk>, IAlmostEquatable<Cmyk, float>
     {
-        /// <summary>
-        /// Represents a <see cref="Cmyk"/> that has C, M, Y, and K values set to zero.
-        /// </summary>
-        public static readonly Cmyk Empty = default;
-
         /// <summary>
         /// The backing vector for SIMD support.
         /// </summary>
@@ -87,12 +82,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
             get => this.backingVector.W;
         }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="Cmyk"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <summary>
         /// Compares two <see cref="Cmyk"/> objects for equality.
         /// </summary>
@@ -130,6 +119,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
         }
 
         /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override int GetHashCode()
         {
             return this.backingVector.GetHashCode();
@@ -138,16 +128,12 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "Cmyk [Empty]";
-            }
-
-            return $"Cmyk [ C={this.C:#0.##}, M={this.M:#0.##}, Y={this.Y:#0.##}, K={this.K:#0.##}]";
+            return this.Equals(default)
+                ? "Cmyk [Empty]"
+                : $"Cmyk [ C={this.C:#0.##}, M={this.M:#0.##}, Y={this.Y:#0.##}, K={this.K:#0.##}]";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is Cmyk other && this.Equals(other);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Adapt.cs

@@ -18,7 +18,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <param name="color">The color to adapt</param>
         /// <param name="sourceWhitePoint">The white point to adapt for</param>
         /// <returns>The adapted color</returns>
-        public CieXyz Adapt(CieXyz color, CieXyz sourceWhitePoint)
+        public CieXyz Adapt(in CieXyz color, in CieXyz sourceWhitePoint)
         {
             if (!this.IsChromaticAdaptationPerformed)
             {
@@ -33,7 +33,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to adapt</param>
         /// <returns>The adapted color</returns>
-        public CieLab Adapt(CieLab color)
+        public CieLab Adapt(in CieLab color)
         {
             if (!this.IsChromaticAdaptationPerformed)
             {
@@ -54,7 +54,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to adapt</param>
         /// <returns>The adapted color</returns>
-        public CieLch Adapt(CieLch color)
+        public CieLch Adapt(in CieLch color)
         {
             if (!this.IsChromaticAdaptationPerformed)
             {
@@ -75,7 +75,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to adapt</param>
         /// <returns>The adapted color</returns>
-        public CieLchuv Adapt(CieLchuv color)
+        public CieLchuv Adapt(in CieLchuv color)
         {
             if (!this.IsChromaticAdaptationPerformed)
             {
@@ -96,7 +96,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to adapt</param>
         /// <returns>The adapted color</returns>
-        public CieLuv Adapt(CieLuv color)
+        public CieLuv Adapt(in CieLuv color)
         {
             if (!this.IsChromaticAdaptationPerformed)
             {
@@ -117,7 +117,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to adapt</param>
         /// <returns>The adapted color</returns>
-        public HunterLab Adapt(HunterLab color)
+        public HunterLab Adapt(in HunterLab color)
         {
             if (!this.IsChromaticAdaptationPerformed)
             {
@@ -138,7 +138,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to adapt</param>
         /// <returns>The adapted color</returns>
-        public LinearRgb Adapt(LinearRgb color)
+        public LinearRgb Adapt(in LinearRgb color)
         {
             if (!this.IsChromaticAdaptationPerformed)
             {
@@ -167,7 +167,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to adapt</param>
         /// <returns>The adapted color</returns>
-        public Rgb Adapt(Rgb color)
+        public Rgb Adapt(in Rgb color)
         {
             LinearRgb linearInput = this.ToLinearRgb(color);
             LinearRgb linearOutput = this.Adapt(linearInput);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLab.cs

@@ -21,7 +21,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLab ToCieLab(CieLch color)
+        public CieLab ToCieLab(in CieLch color)
         {
             // Conversion (perserving white point)
             CieLab unadapted = CieLchToCieLabConverter.Convert(color);
@@ -40,7 +40,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLab ToCieLab(CieLchuv color)
+        public CieLab ToCieLab(in CieLchuv color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
@@ -51,7 +51,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLab ToCieLab(CieLuv color)
+        public CieLab ToCieLab(in CieLuv color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
@@ -62,7 +62,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLab ToCieLab(CieXyy color)
+        public CieLab ToCieLab(in CieXyy color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
@@ -73,7 +73,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLab ToCieLab(CieXyz color)
+        public CieLab ToCieLab(in CieXyz color)
         {
             // Adaptation
             CieXyz adapted = !this.WhitePoint.Equals(this.TargetLabWhitePoint) && this.IsChromaticAdaptationPerformed
@@ -90,7 +90,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLab ToCieLab(Cmyk color)
+        public CieLab ToCieLab(in Cmyk color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
@@ -101,7 +101,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLab ToCieLab(Hsl color)
+        public CieLab ToCieLab(in Hsl color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
@@ -112,7 +112,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLab ToCieLab(Hsv color)
+        public CieLab ToCieLab(in Hsv color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
@@ -123,7 +123,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLab ToCieLab(HunterLab color)
+        public CieLab ToCieLab(in HunterLab color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
@@ -134,7 +134,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLab ToCieLab(Lms color)
+        public CieLab ToCieLab(in Lms color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
@@ -145,7 +145,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLab ToCieLab(LinearRgb color)
+        public CieLab ToCieLab(in LinearRgb color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
@@ -156,7 +156,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLab ToCieLab(Rgb color)
+        public CieLab ToCieLab(in Rgb color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
@@ -167,7 +167,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLab ToCieLab(YCbCr color)
+        public CieLab ToCieLab(in YCbCr color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLch.cs

@@ -20,7 +20,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLch"/></returns>
-        public CieLch ToCieLch(CieLab color)
+        public CieLch ToCieLch(in CieLab color)
         {
             // Adaptation
             CieLab adapted = this.IsChromaticAdaptationPerformed ? this.Adapt(color) : color;
@@ -34,7 +34,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLch"/></returns>
-        public CieLch ToCieLch(CieLchuv color)
+        public CieLch ToCieLch(in CieLchuv color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
@@ -45,7 +45,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLch"/></returns>
-        public CieLch ToCieLch(CieLuv color)
+        public CieLch ToCieLch(in CieLuv color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
@@ -56,7 +56,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLch"/></returns>
-        public CieLch ToCieLch(CieXyy color)
+        public CieLch ToCieLch(in CieXyy color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
@@ -67,7 +67,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLch"/></returns>
-        public CieLch ToCieLch(CieXyz color)
+        public CieLch ToCieLch(in CieXyz color)
         {
             CieLab labColor = this.ToCieLab(color);
             return this.ToCieLch(labColor);
@@ -78,7 +78,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLch"/></returns>
-        public CieLch ToCieLch(Cmyk color)
+        public CieLch ToCieLch(in Cmyk color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
@@ -89,7 +89,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLch"/></returns>
-        public CieLch ToCieLch(Hsl color)
+        public CieLch ToCieLch(in Hsl color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
@@ -100,7 +100,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLch"/></returns>
-        public CieLch ToCieLch(Hsv color)
+        public CieLch ToCieLch(in Hsv color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
@@ -111,7 +111,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLch"/></returns>
-        public CieLch ToCieLch(HunterLab color)
+        public CieLch ToCieLch(in HunterLab color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
@@ -122,7 +122,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLch"/></returns>
-        public CieLch ToCieLch(LinearRgb color)
+        public CieLch ToCieLch(in LinearRgb color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
@@ -133,7 +133,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLch"/></returns>
-        public CieLch ToCieLch(Lms color)
+        public CieLch ToCieLch(in Lms color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
@@ -144,7 +144,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLch"/></returns>
-        public CieLch ToCieLch(Rgb color)
+        public CieLch ToCieLch(in Rgb color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
@@ -155,7 +155,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLch"/></returns>
-        public CieLch ToCieLch(YCbCr color)
+        public CieLch ToCieLch(in YCbCr color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLchuv.cs

@@ -20,7 +20,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLchuv"/></returns>
-        public CieLchuv ToCieLchuv(CieLab color)
+        public CieLchuv ToCieLchuv(in CieLab color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
@@ -31,7 +31,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLchuv"/></returns>
-        public CieLchuv ToCieLchuv(CieLch color)
+        public CieLchuv ToCieLchuv(in CieLch color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
@@ -42,7 +42,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLchuv"/></returns>
-        public CieLchuv ToCieLchuv(CieLuv color)
+        public CieLchuv ToCieLchuv(in CieLuv color)
         {
             // Adaptation
             CieLuv adapted = this.IsChromaticAdaptationPerformed ? this.Adapt(color) : color;
@@ -56,7 +56,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLchuv"/></returns>
-        public CieLchuv ToCieLchuv(CieXyy color)
+        public CieLchuv ToCieLchuv(in CieXyy color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
@@ -67,7 +67,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLchuv"/></returns>
-        public CieLchuv ToCieLchuv(CieXyz color)
+        public CieLchuv ToCieLchuv(in CieXyz color)
         {
             CieLab labColor = this.ToCieLab(color);
             return this.ToCieLchuv(labColor);
@@ -78,7 +78,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLchuv"/></returns>
-        public CieLchuv ToCieLchuv(Cmyk color)
+        public CieLchuv ToCieLchuv(in Cmyk color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
@@ -89,7 +89,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLchuv"/></returns>
-        public CieLchuv ToCieLchuv(Hsl color)
+        public CieLchuv ToCieLchuv(in Hsl color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
@@ -100,7 +100,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLchuv"/></returns>
-        public CieLchuv ToCieLchuv(Hsv color)
+        public CieLchuv ToCieLchuv(in Hsv color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
@@ -111,7 +111,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLchuv"/></returns>
-        public CieLchuv ToCieLchuv(HunterLab color)
+        public CieLchuv ToCieLchuv(in HunterLab color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
@@ -122,7 +122,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLchuv"/></returns>
-        public CieLchuv ToCieLchuv(LinearRgb color)
+        public CieLchuv ToCieLchuv(in LinearRgb color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
@@ -133,7 +133,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLchuv"/></returns>
-        public CieLchuv ToCieLchuv(Lms color)
+        public CieLchuv ToCieLchuv(in Lms color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
@@ -155,7 +155,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLchuv"/></returns>
-        public CieLchuv ToCieLchuv(YCbCr color)
+        public CieLchuv ToCieLchuv(in YCbCr color)
         {
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLuv.cs

@@ -19,7 +19,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLuv"/></returns>
-        public CieLuv ToCieLuv(CieLab color)
+        public CieLuv ToCieLuv(in CieLab color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
@@ -30,7 +30,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLuv"/></returns>
-        public CieLuv ToCieLuv(CieLch color)
+        public CieLuv ToCieLuv(in CieLch color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
@@ -41,7 +41,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLab"/></returns>
-        public CieLuv ToCieLuv(CieLchuv color)
+        public CieLuv ToCieLuv(in CieLchuv color)
         {
             // Conversion (perserving white point)
             CieLuv unadapted = CieLchuvToCieLuvConverter.Convert(color);
@@ -60,7 +60,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLuv"/></returns>
-        public CieLuv ToCieLuv(CieXyy color)
+        public CieLuv ToCieLuv(in CieXyy color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
@@ -71,7 +71,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLuv"/></returns>
-        public CieLuv ToCieLuv(CieXyz color)
+        public CieLuv ToCieLuv(in CieXyz color)
         {
             // Adaptation
             CieXyz adapted = !this.WhitePoint.Equals(this.TargetLabWhitePoint) && this.IsChromaticAdaptationPerformed
@@ -88,7 +88,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLuv"/></returns>
-        public CieLuv ToCieLuv(Cmyk color)
+        public CieLuv ToCieLuv(in Cmyk color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
@@ -99,7 +99,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLuv"/></returns>
-        public CieLuv ToCieLuv(Hsl color)
+        public CieLuv ToCieLuv(in Hsl color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
@@ -110,7 +110,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLuv"/></returns>
-        public CieLuv ToCieLuv(Hsv color)
+        public CieLuv ToCieLuv(in Hsv color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
@@ -121,7 +121,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLuv"/></returns>
-        public CieLuv ToCieLuv(HunterLab color)
+        public CieLuv ToCieLuv(in HunterLab color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
@@ -132,7 +132,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLuv"/></returns>
-        public CieLuv ToCieLuv(Lms color)
+        public CieLuv ToCieLuv(in Lms color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
@@ -143,7 +143,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLuv"/></returns>
-        public CieLuv ToCieLuv(LinearRgb color)
+        public CieLuv ToCieLuv(in LinearRgb color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
@@ -154,7 +154,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLuv"/></returns>
-        public CieLuv ToCieLuv(Rgb color)
+        public CieLuv ToCieLuv(in Rgb color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
@@ -165,7 +165,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieLuv"/></returns>
-        public CieLuv ToCieLuv(YCbCr color)
+        public CieLuv ToCieLuv(in YCbCr color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieXyy.cs

@@ -17,7 +17,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyy"/></returns>
-        public CieXyy ToCieXyy(CieLab color)
+        public CieXyy ToCieXyy(in CieLab color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -29,7 +29,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyy"/></returns>
-        public CieXyy ToCieXyy(CieLch color)
+        public CieXyy ToCieXyy(in CieLch color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -41,7 +41,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyy"/></returns>
-        public CieXyy ToCieXyy(CieLchuv color)
+        public CieXyy ToCieXyy(in CieLchuv color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -53,7 +53,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyy"/></returns>
-        public CieXyy ToCieXyy(CieLuv color)
+        public CieXyy ToCieXyy(in CieLuv color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -65,7 +65,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyy"/></returns>
-        public CieXyy ToCieXyy(CieXyz color)
+        public CieXyy ToCieXyy(in CieXyz color)
         {
             return CieXyzAndCieXyyConverter.Convert(color);
         }
@@ -75,7 +75,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyy"/></returns>
-        public CieXyy ToCieXyy(Cmyk color)
+        public CieXyy ToCieXyy(in Cmyk color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -99,7 +99,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyy"/></returns>
-        public CieXyy ToCieXyy(Hsv color)
+        public CieXyy ToCieXyy(in Hsv color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -111,7 +111,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyy"/></returns>
-        public CieXyy ToCieXyy(HunterLab color)
+        public CieXyy ToCieXyy(in HunterLab color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -123,7 +123,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyy"/></returns>
-        public CieXyy ToCieXyy(LinearRgb color)
+        public CieXyy ToCieXyy(in LinearRgb color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -135,7 +135,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyy"/></returns>
-        public CieXyy ToCieXyy(Lms color)
+        public CieXyy ToCieXyy(in Lms color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -147,7 +147,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyy"/></returns>
-        public CieXyy ToCieXyy(Rgb color)
+        public CieXyy ToCieXyy(in Rgb color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -159,7 +159,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyy"/></returns>
-        public CieXyy ToCieXyy(YCbCr color)
+        public CieXyy ToCieXyy(in YCbCr color)
         {
             var xyzColor = this.ToCieXyz(color);
 

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieXyz.cs

@@ -26,7 +26,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        public CieXyz ToCieXyz(CieLab color)
+        public CieXyz ToCieXyz(in CieLab color)
         {
             // Conversion
             CieXyz unadapted = CieLabToCieXyzConverter.Convert(color);
@@ -44,7 +44,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        public CieXyz ToCieXyz(CieLch color)
+        public CieXyz ToCieXyz(in CieLch color)
         {
             // Conversion to Lab
             CieLab labColor = CieLchToCieLabConverter.Convert(color);
@@ -58,7 +58,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        public CieXyz ToCieXyz(CieLchuv color)
+        public CieXyz ToCieXyz(in CieLchuv color)
         {
             // Conversion to Luv
             CieLuv luvColor = CieLchuvToCieLuvConverter.Convert(color);
@@ -72,7 +72,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        public CieXyz ToCieXyz(CieLuv color)
+        public CieXyz ToCieXyz(in CieLuv color)
         {
             // Conversion
             CieXyz unadapted = CieLuvToCieXyzConverter.Convert(color);
@@ -90,7 +90,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        public CieXyz ToCieXyz(CieXyy color)
+        public CieXyz ToCieXyz(in CieXyy color)
         {
             // Conversion
             return CieXyzAndCieXyyConverter.Convert(color);
@@ -101,7 +101,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        public CieXyz ToCieXyz(Cmyk color)
+        public CieXyz ToCieXyz(in Cmyk color)
         {
             // Conversion
             var rgb = this.ToRgb(color);
@@ -114,7 +114,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        public CieXyz ToCieXyz(Hsl color)
+        public CieXyz ToCieXyz(in Hsl color)
         {
             // Conversion
             var rgb = this.ToRgb(color);
@@ -127,7 +127,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        public CieXyz ToCieXyz(Hsv color)
+        public CieXyz ToCieXyz(in Hsv color)
         {
             // Conversion
             var rgb = this.ToRgb(color);
@@ -140,7 +140,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        public CieXyz ToCieXyz(HunterLab color)
+        public CieXyz ToCieXyz(in HunterLab color)
         {
             // Conversion
             CieXyz unadapted = HunterLabToCieXyzConverter.Convert(color);
@@ -158,7 +158,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        public CieXyz ToCieXyz(LinearRgb color)
+        public CieXyz ToCieXyz(in LinearRgb color)
         {
             // Conversion
             LinearRgbToCieXyzConverter converter = this.GetLinearRgbToCieXyzConverter(color.WorkingSpace);
@@ -175,7 +175,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        public CieXyz ToCieXyz(Lms color)
+        public CieXyz ToCieXyz(in Lms color)
         {
             // Conversion
             return this.cachedCieXyzAndLmsConverter.Convert(color);
@@ -186,7 +186,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        public CieXyz ToCieXyz(Rgb color)
+        public CieXyz ToCieXyz(in Rgb color)
         {
             // Conversion
             LinearRgb linear = RgbToLinearRgbConverter.Convert(color);
@@ -198,7 +198,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        public CieXyz ToCieXyz(YCbCr color)
+        public CieXyz ToCieXyz(in YCbCr color)
         {
             // Conversion
             var rgb = this.ToRgb(color);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Cmyk.cs

@@ -17,7 +17,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Cmyk"/></returns>
-        public Cmyk ToCmyk(CieLab color)
+        public Cmyk ToCmyk(in CieLab color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -29,7 +29,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Cmyk"/></returns>
-        public Cmyk ToCmyk(CieLch color)
+        public Cmyk ToCmyk(in CieLch color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -41,7 +41,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Cmyk"/></returns>
-        public Cmyk ToCmyk(CieLchuv color)
+        public Cmyk ToCmyk(in CieLchuv color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -53,7 +53,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Cmyk"/></returns>
-        public Cmyk ToCmyk(CieLuv color)
+        public Cmyk ToCmyk(in CieLuv color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -65,7 +65,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Cmyk"/></returns>
-        public Cmyk ToCmyk(CieXyy color)
+        public Cmyk ToCmyk(in CieXyy color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -77,7 +77,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Cmyk"/></returns>
-        public Cmyk ToCmyk(CieXyz color)
+        public Cmyk ToCmyk(in CieXyz color)
         {
             var rgb = this.ToRgb(color);
 
@@ -89,7 +89,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Cmyk"/></returns>
-        public Cmyk ToCmyk(Hsl color)
+        public Cmyk ToCmyk(in Hsl color)
         {
             var rgb = this.ToRgb(color);
 
@@ -101,7 +101,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Cmyk"/></returns>
-        public Cmyk ToCmyk(Hsv color)
+        public Cmyk ToCmyk(in Hsv color)
         {
             var rgb = this.ToRgb(color);
 
@@ -113,7 +113,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Cmyk"/></returns>
-        public Cmyk ToCmyk(HunterLab color)
+        public Cmyk ToCmyk(in HunterLab color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -125,7 +125,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Cmyk"/></returns>
-        public Cmyk ToCmyk(LinearRgb color)
+        public Cmyk ToCmyk(in LinearRgb color)
         {
             var rgb = this.ToRgb(color);
 
@@ -137,7 +137,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Cmyk"/></returns>
-        public Cmyk ToCmyk(Lms color)
+        public Cmyk ToCmyk(in Lms color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -149,7 +149,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Cmyk"/></returns>
-        public Cmyk ToCmyk(Rgb color)
+        public Cmyk ToCmyk(in Rgb color)
         {
             return CmykAndRgbConverter.Convert(color);
         }
@@ -159,7 +159,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Cmyk"/></returns>
-        public Cmyk ToCmyk(YCbCr color)
+        public Cmyk ToCmyk(in YCbCr color)
         {
             var rgb = this.ToRgb(color);
 

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Hsl.cs

@@ -17,7 +17,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsl"/></returns>
-        public Hsl ToHsl(CieLab color)
+        public Hsl ToHsl(in CieLab color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -29,7 +29,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsl"/></returns>
-        public Hsl ToHsl(CieLch color)
+        public Hsl ToHsl(in CieLch color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -41,7 +41,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsl"/></returns>
-        public Hsl ToHsl(CieLchuv color)
+        public Hsl ToHsl(in CieLchuv color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -53,7 +53,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsl"/></returns>
-        public Hsl ToHsl(CieLuv color)
+        public Hsl ToHsl(in CieLuv color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -65,7 +65,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsl"/></returns>
-        public Hsl ToHsl(CieXyy color)
+        public Hsl ToHsl(in CieXyy color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -77,7 +77,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsl"/></returns>
-        public Hsl ToHsl(CieXyz color)
+        public Hsl ToHsl(in CieXyz color)
         {
             var rgb = this.ToRgb(color);
 
@@ -89,7 +89,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsl"/></returns>
-        public Hsl ToHsl(Cmyk color)
+        public Hsl ToHsl(in Cmyk color)
         {
             var rgb = this.ToRgb(color);
 
@@ -101,7 +101,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsl"/></returns>
-        public Hsl ToHsl(Hsv color)
+        public Hsl ToHsl(in Hsv color)
         {
             var rgb = this.ToRgb(color);
 
@@ -113,7 +113,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsl"/></returns>
-        public Hsl ToHsl(HunterLab color)
+        public Hsl ToHsl(in HunterLab color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -125,7 +125,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsl"/></returns>
-        public Hsl ToHsl(LinearRgb color)
+        public Hsl ToHsl(in LinearRgb color)
         {
             var rgb = this.ToRgb(color);
 
@@ -149,7 +149,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsl"/></returns>
-        public Hsl ToHsl(Rgb color)
+        public Hsl ToHsl(in Rgb color)
         {
             return HslAndRgbConverter.Convert(color);
         }
@@ -159,7 +159,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsl"/></returns>
-        public Hsl ToHsl(YCbCr color)
+        public Hsl ToHsl(in YCbCr color)
         {
             var rgb = this.ToRgb(color);
 

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Hsv.cs

@@ -17,7 +17,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsv"/></returns>
-        public Hsv ToHsv(CieLab color)
+        public Hsv ToHsv(in CieLab color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -29,7 +29,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsv"/></returns>
-        public Hsv ToHsv(CieLch color)
+        public Hsv ToHsv(in CieLch color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -41,7 +41,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsv"/></returns>
-        public Hsv ToHsv(CieLchuv color)
+        public Hsv ToHsv(in CieLchuv color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -53,7 +53,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsv"/></returns>
-        public Hsv ToHsv(CieLuv color)
+        public Hsv ToHsv(in CieLuv color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -65,7 +65,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsv"/></returns>
-        public Hsv ToHsv(CieXyy color)
+        public Hsv ToHsv(in CieXyy color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -77,7 +77,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsv"/></returns>
-        public Hsv ToHsv(CieXyz color)
+        public Hsv ToHsv(in CieXyz color)
         {
             var rgb = this.ToRgb(color);
 
@@ -89,7 +89,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsv"/></returns>
-        public Hsv ToHsv(Cmyk color)
+        public Hsv ToHsv(in Cmyk color)
         {
             var rgb = this.ToRgb(color);
 
@@ -101,7 +101,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsv"/></returns>
-        public Hsv ToHsv(Hsl color)
+        public Hsv ToHsv(in Hsl color)
         {
             var rgb = this.ToRgb(color);
 
@@ -113,7 +113,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsv"/></returns>
-        public Hsv ToHsv(HunterLab color)
+        public Hsv ToHsv(in HunterLab color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -125,7 +125,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsv"/></returns>
-        public Hsv ToHsv(LinearRgb color)
+        public Hsv ToHsv(in LinearRgb color)
         {
             var rgb = this.ToRgb(color);
 
@@ -149,7 +149,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsv"/></returns>
-        public Hsv ToHsv(Rgb color)
+        public Hsv ToHsv(in Rgb color)
         {
             return HsvAndRgbConverter.Convert(color);
         }
@@ -159,7 +159,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Hsv"/></returns>
-        public Hsv ToHsv(YCbCr color)
+        public Hsv ToHsv(in YCbCr color)
         {
             var rgb = this.ToRgb(color);
 

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.HunterLab.cs

@@ -15,7 +15,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="HunterLab"/></returns>
-        public HunterLab ToHunterLab(CieLab color)
+        public HunterLab ToHunterLab(in CieLab color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
@@ -26,7 +26,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="HunterLab"/></returns>
-        public HunterLab ToHunterLab(CieLch color)
+        public HunterLab ToHunterLab(in CieLch color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
@@ -37,7 +37,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="HunterLab"/></returns>
-        public HunterLab ToHunterLab(CieLchuv color)
+        public HunterLab ToHunterLab(in CieLchuv color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
@@ -48,7 +48,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="HunterLab"/></returns>
-        public HunterLab ToHunterLab(CieLuv color)
+        public HunterLab ToHunterLab(in CieLuv color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
@@ -59,7 +59,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="HunterLab"/></returns>
-        public HunterLab ToHunterLab(CieXyy color)
+        public HunterLab ToHunterLab(in CieXyy color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
@@ -70,7 +70,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="HunterLab"/></returns>
-        public HunterLab ToHunterLab(CieXyz color)
+        public HunterLab ToHunterLab(in CieXyz color)
         {
             // Adaptation
             CieXyz adapted = !this.WhitePoint.Equals(this.TargetHunterLabWhitePoint) && this.IsChromaticAdaptationPerformed
@@ -86,7 +86,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="HunterLab"/></returns>
-        public HunterLab ToHunterLab(Cmyk color)
+        public HunterLab ToHunterLab(in Cmyk color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
@@ -97,7 +97,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="HunterLab"/></returns>
-        public HunterLab ToHunterLab(Hsl color)
+        public HunterLab ToHunterLab(in Hsl color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
@@ -108,7 +108,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="HunterLab"/></returns>
-        public HunterLab ToHunterLab(Hsv color)
+        public HunterLab ToHunterLab(in Hsv color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
@@ -119,7 +119,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="HunterLab"/></returns>
-        public HunterLab ToHunterLab(LinearRgb color)
+        public HunterLab ToHunterLab(in LinearRgb color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
@@ -130,7 +130,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="HunterLab"/></returns>
-        public HunterLab ToHunterLab(Lms color)
+        public HunterLab ToHunterLab(in Lms color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
@@ -141,7 +141,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="HunterLab"/></returns>
-        public HunterLab ToHunterLab(Rgb color)
+        public HunterLab ToHunterLab(in Rgb color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
@@ -152,7 +152,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="HunterLab"/></returns>
-        public HunterLab ToHunterLab(YCbCr color)
+        public HunterLab ToHunterLab(in YCbCr color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.LinearRgb.cs

@@ -19,7 +19,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="LinearRgb"/></returns>
-        public LinearRgb ToLinearRgb(CieLab color)
+        public LinearRgb ToLinearRgb(in CieLab color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
@@ -30,7 +30,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="LinearRgb"/></returns>
-        public LinearRgb ToLinearRgb(CieLch color)
+        public LinearRgb ToLinearRgb(in CieLch color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
@@ -41,7 +41,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="LinearRgb"/></returns>
-        public LinearRgb ToLinearRgb(CieLchuv color)
+        public LinearRgb ToLinearRgb(in CieLchuv color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
@@ -52,7 +52,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="LinearRgb"/></returns>
-        public LinearRgb ToLinearRgb(CieLuv color)
+        public LinearRgb ToLinearRgb(in CieLuv color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
@@ -63,7 +63,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="LinearRgb"/></returns>
-        public LinearRgb ToLinearRgb(CieXyy color)
+        public LinearRgb ToLinearRgb(in CieXyy color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
@@ -74,7 +74,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="LinearRgb"/></returns>
-        public LinearRgb ToLinearRgb(CieXyz color)
+        public LinearRgb ToLinearRgb(in CieXyz color)
         {
             // Adaptation
             CieXyz adapted = this.TargetRgbWorkingSpace.WhitePoint.Equals(this.WhitePoint) || !this.IsChromaticAdaptationPerformed
@@ -91,7 +91,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="LinearRgb"/></returns>
-        public LinearRgb ToLinearRgb(Cmyk color)
+        public LinearRgb ToLinearRgb(in Cmyk color)
         {
             var rgb = this.ToRgb(color);
             return this.ToLinearRgb(rgb);
@@ -102,7 +102,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="LinearRgb"/></returns>
-        public LinearRgb ToLinearRgb(Hsl color)
+        public LinearRgb ToLinearRgb(in Hsl color)
         {
             var rgb = this.ToRgb(color);
             return this.ToLinearRgb(rgb);
@@ -113,7 +113,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="LinearRgb"/></returns>
-        public LinearRgb ToLinearRgb(Hsv color)
+        public LinearRgb ToLinearRgb(in Hsv color)
         {
             var rgb = this.ToRgb(color);
             return this.ToLinearRgb(rgb);
@@ -124,7 +124,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="LinearRgb"/></returns>
-        public LinearRgb ToLinearRgb(HunterLab color)
+        public LinearRgb ToLinearRgb(in HunterLab color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
@@ -135,7 +135,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="LinearRgb"/></returns>
-        public LinearRgb ToLinearRgb(Lms color)
+        public LinearRgb ToLinearRgb(in Lms color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
@@ -146,7 +146,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="LinearRgb"/></returns>
-        public LinearRgb ToLinearRgb(Rgb color)
+        public LinearRgb ToLinearRgb(in Rgb color)
         {
             // Conversion
             return RgbToLinearRgbConverter.Convert(color);
@@ -157,7 +157,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="LinearRgb"/></returns>
-        public LinearRgb ToLinearRgb(YCbCr color)
+        public LinearRgb ToLinearRgb(in YCbCr color)
         {
             var rgb = this.ToRgb(color);
             return this.ToLinearRgb(rgb);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Lms.cs

@@ -15,7 +15,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Lms"/></returns>
-        public Lms ToLms(CieLab color)
+        public Lms ToLms(in CieLab color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
@@ -26,7 +26,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Lms"/></returns>
-        public Lms ToLms(CieLch color)
+        public Lms ToLms(in CieLch color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
@@ -37,7 +37,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Lms"/></returns>
-        public Lms ToLms(CieLchuv color)
+        public Lms ToLms(in CieLchuv color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
@@ -48,7 +48,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Lms"/></returns>
-        public Lms ToLms(CieLuv color)
+        public Lms ToLms(in CieLuv color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
@@ -59,7 +59,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Lms"/></returns>
-        public Lms ToLms(CieXyy color)
+        public Lms ToLms(in CieXyy color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
@@ -70,7 +70,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Lms"/></returns>
-        public Lms ToLms(CieXyz color)
+        public Lms ToLms(in CieXyz color)
         {
             return this.cachedCieXyzAndLmsConverter.Convert(color);
         }
@@ -80,7 +80,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Lms"/></returns>
-        public Lms ToLms(Cmyk color)
+        public Lms ToLms(in Cmyk color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
@@ -91,7 +91,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Lms"/></returns>
-        public Lms ToLms(Hsl color)
+        public Lms ToLms(in Hsl color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
@@ -102,7 +102,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Lms"/></returns>
-        public Lms ToLms(Hsv color)
+        public Lms ToLms(in Hsv color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
@@ -113,7 +113,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Lms"/></returns>
-        public Lms ToLms(HunterLab color)
+        public Lms ToLms(in HunterLab color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
@@ -124,7 +124,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Lms"/></returns>
-        public Lms ToLms(LinearRgb color)
+        public Lms ToLms(in LinearRgb color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
@@ -135,7 +135,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Lms"/></returns>
-        public Lms ToLms(Rgb color)
+        public Lms ToLms(in Rgb color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
@@ -146,7 +146,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Lms"/></returns>
-        public Lms ToLms(YCbCr color)
+        public Lms ToLms(in YCbCr color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Rgb.cs

@@ -17,7 +17,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Rgb"/></returns>
-        public Rgb ToRgb(CieLab color)
+        public Rgb ToRgb(in CieLab color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
@@ -28,7 +28,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Rgb"/></returns>
-        public Rgb ToRgb(CieLch color)
+        public Rgb ToRgb(in CieLch color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
@@ -39,7 +39,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Rgb"/></returns>
-        public Rgb ToRgb(CieLchuv color)
+        public Rgb ToRgb(in CieLchuv color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
@@ -50,7 +50,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Rgb"/></returns>
-        public Rgb ToRgb(CieLuv color)
+        public Rgb ToRgb(in CieLuv color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
@@ -61,7 +61,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Rgb"/></returns>
-        public Rgb ToRgb(CieXyy color)
+        public Rgb ToRgb(in CieXyy color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
@@ -72,7 +72,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Rgb"/></returns>
-        public Rgb ToRgb(CieXyz color)
+        public Rgb ToRgb(in CieXyz color)
         {
             // Conversion
             var linear = this.ToLinearRgb(color);
@@ -86,7 +86,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Rgb"/></returns>
-        public Rgb ToRgb(Cmyk color)
+        public Rgb ToRgb(in Cmyk color)
         {
             // Conversion
             return CmykAndRgbConverter.Convert(color);
@@ -97,7 +97,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Rgb"/></returns>
-        public Rgb ToRgb(Hsv color)
+        public Rgb ToRgb(in Hsv color)
         {
             // Conversion
             return HsvAndRgbConverter.Convert(color);
@@ -108,7 +108,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Rgb"/></returns>
-        public Rgb ToRgb(Hsl color)
+        public Rgb ToRgb(in Hsl color)
         {
             // Conversion
             return HslAndRgbConverter.Convert(color);
@@ -119,7 +119,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Rgb"/></returns>
-        public Rgb ToRgb(HunterLab color)
+        public Rgb ToRgb(in HunterLab color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
@@ -130,7 +130,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Rgb"/></returns>
-        public Rgb ToRgb(LinearRgb color)
+        public Rgb ToRgb(in LinearRgb color)
         {
             // Conversion
             return LinearRgbToRgbConverter.Convert(color);
@@ -141,7 +141,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Rgb"/></returns>
-        public Rgb ToRgb(Lms color)
+        public Rgb ToRgb(in Lms color)
         {
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
@@ -152,7 +152,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="Rgb"/></returns>
-        public Rgb ToRgb(YCbCr color)
+        public Rgb ToRgb(in YCbCr color)
         {
             // Conversion
             Rgb rgb = YCbCrAndRgbConverter.Convert(color);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.YCbCr.cs

@@ -17,7 +17,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="YCbCr"/></returns>
-        public YCbCr ToYCbCr(CieLab color)
+        public YCbCr ToYCbCr(in CieLab color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -29,7 +29,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="YCbCr"/></returns>
-        public YCbCr ToYCbCr(CieLch color)
+        public YCbCr ToYCbCr(in CieLch color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -41,7 +41,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="YCbCr"/></returns>
-        public YCbCr ToYCbCr(CieLchuv color)
+        public YCbCr ToYCbCr(in CieLchuv color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -53,7 +53,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="YCbCr"/></returns>
-        public YCbCr ToYCbCr(CieLuv color)
+        public YCbCr ToYCbCr(in CieLuv color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -65,7 +65,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="YCbCr"/></returns>
-        public YCbCr ToYCbCr(CieXyy color)
+        public YCbCr ToYCbCr(in CieXyy color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -77,7 +77,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="YCbCr"/></returns>
-        public YCbCr ToYCbCr(CieXyz color)
+        public YCbCr ToYCbCr(in CieXyz color)
         {
             var rgb = this.ToRgb(color);
 
@@ -89,7 +89,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="YCbCr"/></returns>
-        public YCbCr ToYCbCr(Cmyk color)
+        public YCbCr ToYCbCr(in Cmyk color)
         {
             var rgb = this.ToRgb(color);
 
@@ -101,7 +101,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="YCbCr"/></returns>
-        public YCbCr ToYCbCr(Hsl color)
+        public YCbCr ToYCbCr(in Hsl color)
         {
             var rgb = this.ToRgb(color);
 
@@ -113,7 +113,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="YCbCr"/></returns>
-        public YCbCr ToYCbCr(Hsv color)
+        public YCbCr ToYCbCr(in Hsv color)
         {
             var rgb = this.ToRgb(color);
 
@@ -125,7 +125,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="YCbCr"/></returns>
-        public YCbCr ToYCbCr(HunterLab color)
+        public YCbCr ToYCbCr(in HunterLab color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -137,7 +137,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="YCbCr"/></returns>
-        public YCbCr ToYCbCr(LinearRgb color)
+        public YCbCr ToYCbCr(in LinearRgb color)
         {
             var rgb = this.ToRgb(color);
 
@@ -149,7 +149,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="YCbCr"/></returns>
-        public YCbCr ToYCbCr(Lms color)
+        public YCbCr ToYCbCr(in Lms color)
         {
             var xyzColor = this.ToCieXyz(color);
 
@@ -161,7 +161,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// </summary>
         /// <param name="color">The color to convert.</param>
         /// <returns>The <see cref="YCbCr"/></returns>
-        public YCbCr ToYCbCr(Rgb color)
+        public YCbCr ToYCbCr(in Rgb color)
         {
             return YCbCrAndRgbConverter.Convert(color);
         }

src/ImageSharp/ColorSpaces/Conversion/IChromaticAdaptation.cs

@@ -1,8 +1,6 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
-using SixLabors.ImageSharp.ColorSpaces;
-
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion
 {
     /// <summary>
@@ -20,6 +18,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <param name="sourceWhitePoint">The source white point.</param>
         /// <param name="targetWhitePoint">The target white point.</param>
         /// <returns>The <see cref="CieXyz"/></returns>
-        CieXyz Transform(CieXyz sourceColor, CieXyz sourceWhitePoint, CieXyz targetWhitePoint);
+        CieXyz Transform(in CieXyz sourceColor, in CieXyz sourceWhitePoint, in CieXyz targetWhitePoint);
     }
 }

src/ImageSharp/ColorSpaces/Conversion/IColorConversion.cs

@@ -8,13 +8,15 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
     /// </summary>
     /// <typeparam name="T">The input color type.</typeparam>
     /// <typeparam name="TResult">The result color type.</typeparam>
-    internal interface IColorConversion<in T, out TResult>
+    internal interface IColorConversion<T, TResult>
+        where T : struct
+        where TResult : struct
     {
         /// <summary>
         /// Performs the conversion from the input to an instance of the output type.
         /// </summary>
         /// <param name="input">The input color instance.</param>
         /// <returns>The converted result</returns>
-        TResult Convert(T input);
+        TResult Convert(in T input);
     }
 }

src/ImageSharp/ColorSpaces/Conversion/Implementation/CieLab/CieLabToCieXyzConverter.cs

@@ -13,7 +13,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLabColor
     {
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public CieXyz Convert(CieLab input)
+        public CieXyz Convert(in CieLab input)
         {
             // Conversion algorithm described here: http://www.brucelindbloom.com/index.html?Eqn_Lab_to_XYZ.html
             float l = input.L, a = input.A, b = input.B;

src/ImageSharp/ColorSpaces/Conversion/Implementation/CieLab/CieXyzToCieLabConverter.cs

@@ -33,15 +33,11 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLabColor
         /// <summary>
         /// Gets the target reference whitepoint. When not set, <see cref="CieLab.DefaultWhitePoint"/> is used.
         /// </summary>
-        public CieXyz LabWhitePoint
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get;
-        }
+        public CieXyz LabWhitePoint { get; }
 
         /// <inheritdoc />
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public CieLab Convert(CieXyz input)
+        public CieLab Convert(in CieXyz input)
         {
             // Conversion algorithm described here: http://www.brucelindbloom.com/index.html?Eqn_XYZ_to_Lab.html
             float wx = this.LabWhitePoint.X, wy = this.LabWhitePoint.Y, wz = this.LabWhitePoint.Z;

src/ImageSharp/ColorSpaces/Conversion/Implementation/CieLch/CIeLchToCieLabConverter.cs

@@ -13,7 +13,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLchColor
     {
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public CieLab Convert(CieLch input)
+        public CieLab Convert(in CieLch input)
         {
             // Conversion algorithm described here:
             // https://en.wikipedia.org/wiki/Lab_color_space#Cylindrical_representation:_CIELCh_or_CIEHLC

src/ImageSharp/ColorSpaces/Conversion/Implementation/CieLch/CieLabToCieLchConverter.cs

@@ -13,7 +13,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLchColor
     {
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public CieLch Convert(CieLab input)
+        public CieLch Convert(in CieLab input)
         {
             // Conversion algorithm described here:
             // https://en.wikipedia.org/wiki/Lab_color_space#Cylindrical_representation:_CIELCh_or_CIEHLC

src/ImageSharp/ColorSpaces/Conversion/Implementation/CieLchuv/CieLchuvToCieLuvConverter.cs

@@ -13,7 +13,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLchuvCol
     {
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public CieLuv Convert(CieLchuv input)
+        public CieLuv Convert(in CieLchuv input)
         {
             // Conversion algorithm described here:
             // https://en.wikipedia.org/wiki/CIELUV#Cylindrical_representation_.28CIELCH.29

src/ImageSharp/ColorSpaces/Conversion/Implementation/CieLchuv/CieLuvToCieLchuvConverter.cs

@@ -13,7 +13,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLchuvCol
     {
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public CieLchuv Convert(CieLuv input)
+        public CieLchuv Convert(in CieLuv input)
         {
             // Conversion algorithm described here:
             // https://en.wikipedia.org/wiki/CIELUV#Cylindrical_representation_.28CIELCH.29

src/ImageSharp/ColorSpaces/Conversion/Implementation/CieLuv/CieLuvToCieXyzConverter.cs

@@ -13,7 +13,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLuvColor
     {
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public CieXyz Convert(CieLuv input)
+        public CieXyz Convert(in CieLuv input)
         {
             // Conversion algorithm described here: http://www.brucelindbloom.com/index.html?Eqn_Luv_to_XYZ.html
             float l = input.L, u = input.U, v = input.V;
@@ -57,7 +57,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLuvColor
         /// <param name="input">The whitepoint</param>
         /// <returns>The <see cref="float"/></returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private static float ComputeU0(CieXyz input)
+        private static float ComputeU0(in CieXyz input)
         {
             return (4 * input.X) / (input.X + (15 * input.Y) + (3 * input.Z));
         }
@@ -68,7 +68,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLuvColor
         /// <param name="input">The whitepoint</param>
         /// <returns>The <see cref="float"/></returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private static float ComputeV0(CieXyz input)
+        private static float ComputeV0(in CieXyz input)
         {
             return (9 * input.Y) / (input.X + (15 * input.Y) + (3 * input.Z));
         }

src/ImageSharp/ColorSpaces/Conversion/Implementation/CieLuv/CieXyzToCieLuvConverter.cs

@@ -34,15 +34,11 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLuvColor
         /// <summary>
         /// Gets the target reference whitepoint. When not set, <see cref="CieLuv.DefaultWhitePoint"/> is used.
         /// </summary>
-        public CieXyz LuvWhitePoint
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get;
-        }
+        public CieXyz LuvWhitePoint { get; }
 
         /// <inheritdoc />
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public CieLuv Convert(CieXyz input)
+        public CieLuv Convert(in CieXyz input)
         {
             // Conversion algorithm described here: http://www.brucelindbloom.com/index.html?Eqn_XYZ_to_Luv.html
             float yr = input.Y / this.LuvWhitePoint.Y;
@@ -80,7 +76,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLuvColor
         /// <param name="input">The whitepoint</param>
         /// <returns>The <see cref="float"/></returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private static float ComputeUp(CieXyz input)
+        private static float ComputeUp(in CieXyz input)
         {
             return (4 * input.X) / (input.X + (15 * input.Y) + (3 * input.Z));
         }
@@ -90,7 +86,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLuvColor
         /// </summary>
         /// <param name="input">The whitepoint</param>
         /// <returns>The <see cref="float"/></returns>
-        private static float ComputeVp(CieXyz input)
+        private static float ComputeVp(in CieXyz input)
         {
             return (9 * input.Y) / (input.X + (15 * input.Y) + (3 * input.Z));
         }

src/ImageSharp/ColorSpaces/Conversion/Implementation/CieXyy/CieXyzAndCieXyyConverter.cs

@@ -14,7 +14,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieXyyColor
     {
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public CieXyy Convert(CieXyz input)
+        public CieXyy Convert(in CieXyz input)
         {
             float x = input.X / (input.X + input.Y + input.Z);
             float y = input.Y / (input.X + input.Y + input.Z);
@@ -29,7 +29,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieXyyColor
 
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public CieXyz Convert(CieXyy input)
+        public CieXyz Convert(in CieXyy input)
         {
             if (MathF.Abs(input.Y) < Constants.Epsilon)
             {

src/ImageSharp/ColorSpaces/Conversion/Implementation/Cmyk/CmykAndRgbConverter.cs

@@ -13,7 +13,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CmykColorSa
     {
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public Rgb Convert(Cmyk input)
+        public Rgb Convert(in Cmyk input)
         {
             float r = (1F - input.C) * (1F - input.K);
             float g = (1F - input.M) * (1F - input.K);
@@ -24,7 +24,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CmykColorSa
 
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public Cmyk Convert(Rgb input)
+        public Cmyk Convert(in Rgb input)
         {
             // To CMYK
             float c = 1F - input.R;

src/ImageSharp/ColorSpaces/Conversion/Implementation/Hsl/HslAndRgbConverter.cs

@@ -14,7 +14,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HslColorSap
     {
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public Rgb Convert(Hsl input)
+        public Rgb Convert(in Hsl input)
         {
             float rangedH = input.H / 360F;
             float r = 0;
@@ -45,7 +45,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HslColorSap
 
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public Hsl Convert(Rgb input)
+        public Hsl Convert(in Rgb input)
         {
             float r = input.R;
             float g = input.G;

src/ImageSharp/ColorSpaces/Conversion/Implementation/Hsv/HsvAndRgbConverter.cs

@@ -14,7 +14,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HsvColorSap
     {
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public Rgb Convert(Hsv input)
+        public Rgb Convert(in Hsv input)
         {
             float s = input.S;
             float v = input.V;
@@ -77,7 +77,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HsvColorSap
 
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public Hsv Convert(Rgb input)
+        public Hsv Convert(in Rgb input)
         {
             float r = input.R;
             float g = input.G;

src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/CieXyzToHunterLabConverter.cs

@@ -37,7 +37,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HunterLabCo
 
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public HunterLab Convert(CieXyz input)
+        public HunterLab Convert(in CieXyz input)
         {
             // Conversion algorithm described here: http://en.wikipedia.org/wiki/Lab_color_space#Hunter_Lab
             float x = input.X, y = input.Y, z = input.Z;

src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/HunterLabToCieXyzConverter.cs

@@ -13,7 +13,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HunterLabCo
     {
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public CieXyz Convert(HunterLab input)
+        public CieXyz Convert(in HunterLab input)
         {
             // Conversion algorithm described here: http://en.wikipedia.org/wiki/Lab_color_space#Hunter_Lab
             float l = input.L, a = input.A, b = input.B;

src/ImageSharp/ColorSpaces/Conversion/Implementation/Lms/CieXyzAndLmsConverter.cs

@@ -60,7 +60,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.LmsColorSap
 
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public Lms Convert(CieXyz input)
+        public Lms Convert(in CieXyz input)
         {
             Vector3 vector = Vector3.Transform(input.Vector, this.transformationMatrix);
             return new Lms(vector);
@@ -68,7 +68,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.LmsColorSap
 
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public CieXyz Convert(Lms input)
+        public CieXyz Convert(in Lms input)
         {
             Vector3 vector = Vector3.Transform(input.Vector, this.inverseTransformationMatrix);
             return new CieXyz(vector);

src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/CieXyzToLinearRgbConverter.cs

@@ -36,7 +36,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
         public IRgbWorkingSpace TargetWorkingSpace { get; }
 
         /// <inheritdoc/>
-        public LinearRgb Convert(CieXyz input)
+        public LinearRgb Convert(in CieXyz input)
         {
             Matrix4x4.Invert(this.conversionMatrix, out Matrix4x4 inverted);
             Vector3 vector = Vector3.Transform(input.Vector, inverted);

src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/LinearRgbToCieXyzConverter.cs

@@ -36,7 +36,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
         public IRgbWorkingSpace SourceWorkingSpace { get; }
 
         /// <inheritdoc/>
-        public CieXyz Convert(LinearRgb input)
+        public CieXyz Convert(in LinearRgb input)
         {
             DebugGuard.IsTrue(input.WorkingSpace.Equals(this.SourceWorkingSpace), nameof(input.WorkingSpace), "Input and source working spaces must be equal.");
 

src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/LinearRgbToRgbConverter.cs

@@ -11,7 +11,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
     internal class LinearRgbToRgbConverter : IColorConversion<LinearRgb, Rgb>
     {
         /// <inheritdoc/>
-        public Rgb Convert(LinearRgb input)
+        public Rgb Convert(in LinearRgb input)
         {
             Vector3 vector = input.Vector;
             vector.X = input.WorkingSpace.Companding.Compress(vector.X);

src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/RgbToLinearRgbConverter.cs

@@ -11,7 +11,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
     internal class RgbToLinearRgbConverter : IColorConversion<Rgb, LinearRgb>
     {
         /// <inheritdoc/>
-        public LinearRgb Convert(Rgb input)
+        public LinearRgb Convert(in Rgb input)
         {
             Vector3 vector = input.Vector;
             vector.X = input.WorkingSpace.Companding.Expand(vector.X);

src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/RgbWorkingSpace.cs

@@ -6,10 +6,10 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
     /// <summary>
     /// Trivial implementation of <see cref="IRgbWorkingSpace"/>
     /// </summary>
-    internal readonly struct RgbWorkingSpace : IRgbWorkingSpace
+    internal class RgbWorkingSpace : IRgbWorkingSpace
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="RgbWorkingSpace"/> struct.
+        /// Initializes a new instance of the <see cref="RgbWorkingSpace"/> class.
         /// </summary>
         /// <param name="referenceWhite">The reference white point.</param>
         /// <param name="companding">The function pair for converting to <see cref="CieXyz"/> and back.</param>

src/ImageSharp/ColorSpaces/Conversion/Implementation/YCbCr/YCbCrAndRgbConverter.cs

@@ -17,7 +17,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.YCbCrColorS
 
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public Rgb Convert(YCbCr input)
+        public Rgb Convert(in YCbCr input)
         {
             float y = input.Y;
             float cb = input.Cb - 128F;
@@ -32,7 +32,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.YCbCrColorS
 
         /// <inheritdoc/>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public YCbCr Convert(Rgb input)
+        public YCbCr Convert(in Rgb input)
         {
             Vector3 rgb = input.Vector * MaxBytes;
             float r = rgb.X;

src/ImageSharp/ColorSpaces/Conversion/VonKriesChromaticAdaptation.cs

@@ -47,7 +47,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         }
 
         /// <inheritdoc/>
-        public CieXyz Transform(CieXyz sourceColor, CieXyz sourceWhitePoint, CieXyz targetWhitePoint)
+        public CieXyz Transform(in CieXyz sourceColor, in CieXyz sourceWhitePoint, in CieXyz targetWhitePoint)
         {
             if (sourceWhitePoint.Equals(targetWhitePoint))
             {

src/ImageSharp/ColorSpaces/Hsl.cs

@@ -14,12 +14,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
     internal readonly struct Hsl : IColorVector, IEquatable<Hsl>, IAlmostEquatable<Hsl, float>
     {
         /// <summary>
-        /// Represents a <see cref="Hsl"/> that has H, S, and L values set to zero.
-        /// </summary>
-        public static readonly Hsl Empty = default;
-
-        /// <summary>
-        /// Max range used for clamping
+        /// Max range used for clamping.
         /// </summary>
         private static readonly Vector3 VectorMax = new Vector3(360, 1, 1);
 
@@ -80,18 +75,8 @@ namespace SixLabors.ImageSharp.ColorSpaces
             get => this.backingVector.Z;
         }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="Hsl"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <inheritdoc/>
-        public Vector3 Vector
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get => this.backingVector;
-        }
+        public Vector3 Vector => this.backingVector;
 
         /// <summary>
         /// Compares two <see cref="Hsl"/> objects for equality.
@@ -130,6 +115,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
         }
 
         /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override int GetHashCode()
         {
             return this.backingVector.GetHashCode();
@@ -138,16 +124,12 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "Hsl [ Empty ]";
-            }
-
-            return $"Hsl [ H={this.H:#0.##}, S={this.S:#0.##}, L={this.L:#0.##} ]";
+            return this.Equals(default)
+                ? "Hsl [ Empty ]"
+                : $"Hsl [ H={this.H:#0.##}, S={this.S:#0.##}, L={this.L:#0.##} ]";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is Hsl other && this.Equals(other);

src/ImageSharp/ColorSpaces/Hsv.cs

@@ -16,12 +16,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
     internal readonly struct Hsv : IColorVector, IEquatable<Hsv>, IAlmostEquatable<Hsv, float>
     {
         /// <summary>
-        /// Represents a <see cref="Hsv"/> that has H, S, and V values set to zero.
-        /// </summary>
-        public static readonly Hsv Empty = default;
-
-        /// <summary>
-        /// Max range used for clamping
+        /// Max range used for clamping.
         /// </summary>
         private static readonly Vector3 VectorMax = new Vector3(360, 1, 1);
 
@@ -82,12 +77,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
             get => this.backingVector.Z;
         }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="Hsv"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <inheritdoc/>
         public Vector3 Vector
         {
@@ -182,6 +171,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
         }
 
         /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override int GetHashCode()
         {
             return this.backingVector.GetHashCode();
@@ -190,16 +180,12 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "Hsv [ Empty ]";
-            }
-
-            return $"Hsv [ H={this.H:#0.##}, S={this.S:#0.##}, V={this.V:#0.##} ]";
+            return this.Equals(default)
+                ? "Hsv [ Empty ]"
+                : $"Hsv [ H={this.H:#0.##}, S={this.S:#0.##}, V={this.V:#0.##} ]";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is Hsv other && this.Equals(other);

src/ImageSharp/ColorSpaces/HunterLab.cs

@@ -20,11 +20,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// </summary>
         public static readonly CieXyz DefaultWhitePoint = Illuminants.C;
 
-        /// <summary>
-        /// Represents a <see cref="HunterLab"/> that has L, A, B values set to zero.
-        /// </summary>
-        public static readonly HunterLab Empty = default;
-
         /// <summary>
         /// The backing vector for SIMD support.
         /// </summary>
@@ -115,18 +110,8 @@ namespace SixLabors.ImageSharp.ColorSpaces
             get => this.backingVector.Z;
         }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="HunterLab"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <inheritdoc />
-        public Vector3 Vector
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get => this.backingVector;
-        }
+        public Vector3 Vector => this.backingVector;
 
         /// <summary>
         /// Compares two <see cref="HunterLab"/> objects for equality.
@@ -140,7 +125,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <returns>
         /// True if the current left is equal to the <paramref name="right"/> parameter; otherwise, false.
         /// </returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static bool operator ==(HunterLab left, HunterLab right)
         {
             return left.Equals(right);
@@ -165,29 +149,21 @@ namespace SixLabors.ImageSharp.ColorSpaces
         }
 
         /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override int GetHashCode()
         {
-            unchecked
-            {
-                int hashCode = this.WhitePoint.GetHashCode();
-                hashCode = (hashCode * 397) ^ this.backingVector.GetHashCode();
-                return hashCode;
-            }
+            return HashHelpers.Combine(this.WhitePoint.GetHashCode(), this.backingVector.GetHashCode());
         }
 
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "HunterLab [Empty]";
-            }
-
-            return $"HunterLab [ L={this.L:#0.##}, A={this.A:#0.##}, B={this.B:#0.##}]";
+            return this.Equals(default)
+                ? "HunterLab [Empty]"
+                : $"HunterLab [ L={this.L:#0.##}, A={this.A:#0.##}, B={this.B:#0.##}]";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is HunterLab other && this.Equals(other);

src/ImageSharp/ColorSpaces/IRgbWorkingSpace.cs

@@ -12,12 +12,12 @@ namespace SixLabors.ImageSharp.ColorSpaces
     internal interface IRgbWorkingSpace : IEquatable<IRgbWorkingSpace>
     {
         /// <summary>
-        /// Gets the reference white of the color space
+        /// Gets the reference white of the color space.
         /// </summary>
         CieXyz WhitePoint { get; }
 
         /// <summary>
-        /// Gets the chromaticity coordinates of the primaries
+        /// Gets the chromaticity coordinates of the primaries.
         /// </summary>
         RgbPrimariesChromaticityCoordinates ChromaticityCoordinates { get; }
 

src/ImageSharp/ColorSpaces/LinearRgb.cs

@@ -14,12 +14,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
     internal readonly struct LinearRgb : IColorVector, IEquatable<LinearRgb>, IAlmostEquatable<LinearRgb, float>
     {
         /// <summary>
-        /// Represents a <see cref="LinearRgb"/> that has R, G, and B values set to zero.
-        /// </summary>
-        public static readonly LinearRgb Empty = default;
-
-        /// <summary>
-        /// The default LinearRgb working space
+        /// The default LinearRgb working space.
         /// </summary>
         public static readonly IRgbWorkingSpace DefaultWorkingSpace = RgbWorkingSpaces.SRgb;
 
@@ -112,18 +107,8 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// </summary>
         public IRgbWorkingSpace WorkingSpace { get; }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="LinearRgb"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <inheritdoc />
-        public Vector3 Vector
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get => this.backingVector;
-        }
+        public Vector3 Vector => this.backingVector;
 
         /// <summary>
         /// Compares two <see cref="LinearRgb"/> objects for equality.
@@ -162,6 +147,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
         }
 
         /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override int GetHashCode()
         {
             return this.backingVector.GetHashCode();
@@ -170,16 +156,12 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "LinearRgb [ Empty ]";
-            }
-
-            return $"LinearRgb [ R={this.R:#0.##}, G={this.G:#0.##}, B={this.B:#0.##} ]";
+            return this.Equals(default)
+                ? "LinearRgb [ Empty ]"
+                : $"LinearRgb [ R={this.R:#0.##}, G={this.G:#0.##}, B={this.B:#0.##} ]";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is LinearRgb other && this.Equals(other);

src/ImageSharp/ColorSpaces/Lms.cs

@@ -15,11 +15,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
     /// </summary>
     internal readonly struct Lms : IColorVector, IEquatable<Lms>, IAlmostEquatable<Lms, float>
     {
-        /// <summary>
-        /// Represents a <see cref="Lms"/> that has L, M, and S values set to zero.
-        /// </summary>
-        public static readonly Lms Empty = default;
-
         /// <summary>
         /// The backing vector for SIMD support.
         /// </summary>
@@ -79,18 +74,8 @@ namespace SixLabors.ImageSharp.ColorSpaces
             get => this.backingVector.Z;
         }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="Lms"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <inheritdoc />
-        public Vector3 Vector
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get => this.backingVector;
-        }
+        public Vector3 Vector => this.backingVector;
 
         /// <summary>
         /// Compares two <see cref="Lms"/> objects for equality.
@@ -137,16 +122,12 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "Lms [ Empty ]";
-            }
-
-            return $"Lms [ L={this.L:#0.##}, M={this.M:#0.##}, S={this.S:#0.##} ]";
+            return this.Equals(default)
+                ? "Lms [ Empty ]"
+                : $"Lms [ L={this.L:#0.##}, M={this.M:#0.##}, S={this.S:#0.##} ]";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is Lms other && this.Equals(other);

src/ImageSharp/ColorSpaces/Rgb.cs

@@ -15,11 +15,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
     /// </summary>
     internal readonly struct Rgb : IColorVector, IEquatable<Rgb>, IAlmostEquatable<Rgb, float>
     {
-        /// <summary>
-        /// Represents a <see cref="Rgb"/> that has R, G, and B values set to zero.
-        /// </summary>
-        public static readonly Rgb Empty = default;
-
         /// <summary>
         /// The default rgb working space
         /// </summary>
@@ -112,24 +107,10 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <summary>
         /// Gets the Rgb color space <seealso cref="RgbWorkingSpaces"/>
         /// </summary>
-        public IRgbWorkingSpace WorkingSpace
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get;
-        }
-
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="Rgb"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
+        public IRgbWorkingSpace WorkingSpace { get; }
 
         /// <inheritdoc />
-        public Vector3 Vector
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get => this.backingVector;
-        }
+        public Vector3 Vector => this.backingVector;
 
         /// <summary>
         /// Allows the implicit conversion of an instance of <see cref="Rgba32"/> to a
@@ -192,16 +173,12 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "Rgb [ Empty ]";
-            }
-
-            return $"Rgb [ R={this.R:#0.##}, G={this.G:#0.##}, B={this.B:#0.##} ]";
+            return this.Equals(default)
+                ? "Rgb [ Empty ]"
+                : $"Rgb [ R={this.R:#0.##}, G={this.G:#0.##}, B={this.B:#0.##} ]";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is Rgb other && this.Equals(other);

src/ImageSharp/ColorSpaces/RgbWorkingSpaces.cs

@@ -19,97 +19,97 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// Uses proper companding function, according to:
         /// <see href="http://www.brucelindbloom.com/index.html?Eqn_Rgb_to_XYZ.html"/>
         /// </remarks>
-        public static readonly IRgbWorkingSpace SRgb = new RgbWorkingSpace(Illuminants.D65, new SRgbCompanding(), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6400F, 0.3300F), new CieXyChromaticityCoordinates(0.3000F, 0.6000F), new CieXyChromaticityCoordinates(0.1500F, 0.0600F)));
+        public static readonly RgbWorkingSpace SRgb = new RgbWorkingSpace(Illuminants.D65, new SRgbCompanding(), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6400F, 0.3300F), new CieXyChromaticityCoordinates(0.3000F, 0.6000F), new CieXyChromaticityCoordinates(0.1500F, 0.0600F)));
 
         /// <summary>
         /// Simplified sRgb working space (uses <see cref="GammaCompanding">gamma companding</see> instead of <see cref="SRgbCompanding"/>).
         /// See also <see cref="SRgb"/>.
         /// </summary>
-        public static readonly IRgbWorkingSpace SRgbSimplified = new RgbWorkingSpace(Illuminants.D65, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6400F, 0.3300F), new CieXyChromaticityCoordinates(0.3000F, 0.6000F), new CieXyChromaticityCoordinates(0.1500F, 0.0600F)));
+        public static readonly RgbWorkingSpace SRgbSimplified = new RgbWorkingSpace(Illuminants.D65, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6400F, 0.3300F), new CieXyChromaticityCoordinates(0.3000F, 0.6000F), new CieXyChromaticityCoordinates(0.1500F, 0.0600F)));
 
         /// <summary>
-        /// Rec. 709 (ITU-R Recommendation BT.709) working space
+        /// Rec. 709 (ITU-R Recommendation BT.709) working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace Rec709 = new RgbWorkingSpace(Illuminants.D65, new Rec709Companding(), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.64F, 0.33F), new CieXyChromaticityCoordinates(0.30F, 0.60F), new CieXyChromaticityCoordinates(0.15F, 0.06F)));
+        public static readonly RgbWorkingSpace Rec709 = new RgbWorkingSpace(Illuminants.D65, new Rec709Companding(), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.64F, 0.33F), new CieXyChromaticityCoordinates(0.30F, 0.60F), new CieXyChromaticityCoordinates(0.15F, 0.06F)));
 
         /// <summary>
-        /// Rec. 2020 (ITU-R Recommendation BT.2020F) working space
+        /// Rec. 2020 (ITU-R Recommendation BT.2020F) working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace Rec2020 = new RgbWorkingSpace(Illuminants.D65, new Rec2020Companding(), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.708F, 0.292F), new CieXyChromaticityCoordinates(0.170F, 0.797F), new CieXyChromaticityCoordinates(0.131F, 0.046F)));
+        public static readonly RgbWorkingSpace Rec2020 = new RgbWorkingSpace(Illuminants.D65, new Rec2020Companding(), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.708F, 0.292F), new CieXyChromaticityCoordinates(0.170F, 0.797F), new CieXyChromaticityCoordinates(0.131F, 0.046F)));
 
         /// <summary>
-        /// ECI Rgb v2 working space
+        /// ECI Rgb v2 working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace ECIRgbv2 = new RgbWorkingSpace(Illuminants.D50, new LCompanding(), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6700F, 0.3300F), new CieXyChromaticityCoordinates(0.2100F, 0.7100F), new CieXyChromaticityCoordinates(0.1400F, 0.0800F)));
+        public static readonly RgbWorkingSpace ECIRgbv2 = new RgbWorkingSpace(Illuminants.D50, new LCompanding(), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6700F, 0.3300F), new CieXyChromaticityCoordinates(0.2100F, 0.7100F), new CieXyChromaticityCoordinates(0.1400F, 0.0800F)));
 
         /// <summary>
-        /// Adobe Rgb (1998) working space
+        /// Adobe Rgb (1998) working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace AdobeRgb1998 = new RgbWorkingSpace(Illuminants.D65, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6400F, 0.3300F), new CieXyChromaticityCoordinates(0.2100F, 0.7100F), new CieXyChromaticityCoordinates(0.1500F, 0.0600F)));
+        public static readonly RgbWorkingSpace AdobeRgb1998 = new RgbWorkingSpace(Illuminants.D65, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6400F, 0.3300F), new CieXyChromaticityCoordinates(0.2100F, 0.7100F), new CieXyChromaticityCoordinates(0.1500F, 0.0600F)));
 
         /// <summary>
-        /// Apple sRgb working space
+        /// Apple sRgb working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace ApplesRgb = new RgbWorkingSpace(Illuminants.D65, new GammaCompanding(1.8F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6250F, 0.3400F), new CieXyChromaticityCoordinates(0.2800F, 0.5950F), new CieXyChromaticityCoordinates(0.1550F, 0.0700F)));
+        public static readonly RgbWorkingSpace ApplesRgb = new RgbWorkingSpace(Illuminants.D65, new GammaCompanding(1.8F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6250F, 0.3400F), new CieXyChromaticityCoordinates(0.2800F, 0.5950F), new CieXyChromaticityCoordinates(0.1550F, 0.0700F)));
 
         /// <summary>
-        /// Best Rgb working space
+        /// Best Rgb working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace BestRgb = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.7347F, 0.2653F), new CieXyChromaticityCoordinates(0.2150F, 0.7750F), new CieXyChromaticityCoordinates(0.1300F, 0.0350F)));
+        public static readonly RgbWorkingSpace BestRgb = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.7347F, 0.2653F), new CieXyChromaticityCoordinates(0.2150F, 0.7750F), new CieXyChromaticityCoordinates(0.1300F, 0.0350F)));
 
         /// <summary>
-        /// Beta Rgb working space
+        /// Beta Rgb working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace BetaRgb = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6888F, 0.3112F), new CieXyChromaticityCoordinates(0.1986F, 0.7551F), new CieXyChromaticityCoordinates(0.1265F, 0.0352F)));
+        public static readonly RgbWorkingSpace BetaRgb = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6888F, 0.3112F), new CieXyChromaticityCoordinates(0.1986F, 0.7551F), new CieXyChromaticityCoordinates(0.1265F, 0.0352F)));
 
         /// <summary>
-        /// Bruce Rgb working space
+        /// Bruce Rgb working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace BruceRgb = new RgbWorkingSpace(Illuminants.D65, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6400F, 0.3300F), new CieXyChromaticityCoordinates(0.2800F, 0.6500F), new CieXyChromaticityCoordinates(0.1500F, 0.0600F)));
+        public static readonly RgbWorkingSpace BruceRgb = new RgbWorkingSpace(Illuminants.D65, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6400F, 0.3300F), new CieXyChromaticityCoordinates(0.2800F, 0.6500F), new CieXyChromaticityCoordinates(0.1500F, 0.0600F)));
 
         /// <summary>
-        /// CIE Rgb working space
+        /// CIE Rgb working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace CIERgb = new RgbWorkingSpace(Illuminants.E, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.7350F, 0.2650F), new CieXyChromaticityCoordinates(0.2740F, 0.7170F), new CieXyChromaticityCoordinates(0.1670F, 0.0090F)));
+        public static readonly RgbWorkingSpace CIERgb = new RgbWorkingSpace(Illuminants.E, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.7350F, 0.2650F), new CieXyChromaticityCoordinates(0.2740F, 0.7170F), new CieXyChromaticityCoordinates(0.1670F, 0.0090F)));
 
         /// <summary>
-        /// ColorMatch Rgb working space
+        /// ColorMatch Rgb working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace ColorMatchRgb = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(1.8F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6300F, 0.3400F), new CieXyChromaticityCoordinates(0.2950F, 0.6050F), new CieXyChromaticityCoordinates(0.1500F, 0.0750F)));
+        public static readonly RgbWorkingSpace ColorMatchRgb = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(1.8F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6300F, 0.3400F), new CieXyChromaticityCoordinates(0.2950F, 0.6050F), new CieXyChromaticityCoordinates(0.1500F, 0.0750F)));
 
         /// <summary>
-        /// Don Rgb 4 working space
+        /// Don Rgb 4 working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace DonRgb4 = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6960F, 0.3000F), new CieXyChromaticityCoordinates(0.2150F, 0.7650F), new CieXyChromaticityCoordinates(0.1300F, 0.0350F)));
+        public static readonly RgbWorkingSpace DonRgb4 = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6960F, 0.3000F), new CieXyChromaticityCoordinates(0.2150F, 0.7650F), new CieXyChromaticityCoordinates(0.1300F, 0.0350F)));
 
         /// <summary>
-        /// Ekta Space PS5 working space
+        /// Ekta Space PS5 working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace EktaSpacePS5 = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6950F, 0.3050F), new CieXyChromaticityCoordinates(0.2600F, 0.7000F), new CieXyChromaticityCoordinates(0.1100F, 0.0050F)));
+        public static readonly RgbWorkingSpace EktaSpacePS5 = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6950F, 0.3050F), new CieXyChromaticityCoordinates(0.2600F, 0.7000F), new CieXyChromaticityCoordinates(0.1100F, 0.0050F)));
 
         /// <summary>
-        /// NTSC Rgb working space
+        /// NTSC Rgb working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace NTSCRgb = new RgbWorkingSpace(Illuminants.C, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6700F, 0.3300F), new CieXyChromaticityCoordinates(0.2100F, 0.7100F), new CieXyChromaticityCoordinates(0.1400F, 0.0800F)));
+        public static readonly RgbWorkingSpace NTSCRgb = new RgbWorkingSpace(Illuminants.C, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6700F, 0.3300F), new CieXyChromaticityCoordinates(0.2100F, 0.7100F), new CieXyChromaticityCoordinates(0.1400F, 0.0800F)));
 
         /// <summary>
-        /// PAL/SECAM Rgb working space
+        /// PAL/SECAM Rgb working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace PALSECAMRgb = new RgbWorkingSpace(Illuminants.D65, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6400F, 0.3300F), new CieXyChromaticityCoordinates(0.2900F, 0.6000F), new CieXyChromaticityCoordinates(0.1500F, 0.0600F)));
+        public static readonly RgbWorkingSpace PALSECAMRgb = new RgbWorkingSpace(Illuminants.D65, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6400F, 0.3300F), new CieXyChromaticityCoordinates(0.2900F, 0.6000F), new CieXyChromaticityCoordinates(0.1500F, 0.0600F)));
 
         /// <summary>
-        /// ProPhoto Rgb working space
+        /// ProPhoto Rgb working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace ProPhotoRgb = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(1.8F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.7347F, 0.2653F), new CieXyChromaticityCoordinates(0.1596F, 0.8404F), new CieXyChromaticityCoordinates(0.0366F, 0.0001F)));
+        public static readonly RgbWorkingSpace ProPhotoRgb = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(1.8F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.7347F, 0.2653F), new CieXyChromaticityCoordinates(0.1596F, 0.8404F), new CieXyChromaticityCoordinates(0.0366F, 0.0001F)));
 
         /// <summary>
-        /// SMPTE-C Rgb working space
+        /// SMPTE-C Rgb working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace SMPTECRgb = new RgbWorkingSpace(Illuminants.D65, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6300F, 0.3400F), new CieXyChromaticityCoordinates(0.3100F, 0.5950F), new CieXyChromaticityCoordinates(0.1550F, 0.0700F)));
+        public static readonly RgbWorkingSpace SMPTECRgb = new RgbWorkingSpace(Illuminants.D65, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.6300F, 0.3400F), new CieXyChromaticityCoordinates(0.3100F, 0.5950F), new CieXyChromaticityCoordinates(0.1550F, 0.0700F)));
 
         /// <summary>
-        /// Wide Gamut Rgb working space
+        /// Wide Gamut Rgb working space.
         /// </summary>
-        public static readonly IRgbWorkingSpace WideGamutRgb = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.7350F, 0.2650F), new CieXyChromaticityCoordinates(0.1150F, 0.8260F), new CieXyChromaticityCoordinates(0.1570F, 0.0180F)));
+        public static readonly RgbWorkingSpace WideGamutRgb = new RgbWorkingSpace(Illuminants.D50, new GammaCompanding(2.2F), new RgbPrimariesChromaticityCoordinates(new CieXyChromaticityCoordinates(0.7350F, 0.2650F), new CieXyChromaticityCoordinates(0.1150F, 0.8260F), new CieXyChromaticityCoordinates(0.1570F, 0.0180F)));
     }
 }

src/ImageSharp/ColorSpaces/YCbCr.cs

@@ -16,12 +16,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
     internal readonly struct YCbCr : IColorVector, IEquatable<YCbCr>, IAlmostEquatable<YCbCr, float>
     {
         /// <summary>
-        /// Represents a <see cref="YCbCr"/> that has Y, Cb, and Cr values set to zero.
-        /// </summary>
-        public static readonly YCbCr Empty = default;
-
-        /// <summary>
-        /// Vector which is used in clamping to the max value
+        /// Vector which is used in clamping to the max value.
         /// </summary>
         private static readonly Vector3 VectorMax = new Vector3(255F);
 
@@ -82,18 +77,8 @@ namespace SixLabors.ImageSharp.ColorSpaces
             get => this.backingVector.Z;
         }
 
-        /// <summary>
-        /// Gets a value indicating whether this <see cref="YCbCr"/> is empty.
-        /// </summary>
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public bool IsEmpty => this.Equals(Empty);
-
         /// <inheritdoc/>
-        public Vector3 Vector
-        {
-            [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            get => this.backingVector;
-        }
+        public Vector3 Vector => this.backingVector;
 
         /// <summary>
         /// Compares two <see cref="YCbCr"/> objects for equality.
@@ -107,7 +92,6 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <returns>
         /// True if the current left is equal to the <paramref name="right"/> parameter; otherwise, false.
         /// </returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static bool operator ==(YCbCr left, YCbCr right)
         {
             return left.Equals(right);
@@ -132,6 +116,7 @@ namespace SixLabors.ImageSharp.ColorSpaces
         }
 
         /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override int GetHashCode()
         {
             return this.backingVector.GetHashCode();
@@ -140,16 +125,12 @@ namespace SixLabors.ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override string ToString()
         {
-            if (this.IsEmpty)
-            {
-                return "YCbCr [ Empty ]";
-            }
-
-            return $"YCbCr [ Y={this.Y}, Cb={this.Cb}, Cr={this.Cr} ]";
+            return this.Equals(default)
+                ? "YCbCr [ Empty ]"
+                : $"YCbCr [ Y={this.Y}, Cb={this.Cb}, Cr={this.Cr} ]";
         }
 
         /// <inheritdoc/>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override bool Equals(object obj)
         {
             return obj is YCbCr other && this.Equals(other);

src/ImageSharp/MetaData/Profiles/ICC/Curves/IccOneDimensionalCurve.cs

@@ -51,7 +51,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 return true;
             }
 
-            return this.BreakPoints.SequenceEqual(other.BreakPoints)
+            return this.BreakPoints.AsSpan().SequenceEqual(other.BreakPoints)
                 && this.Segments.SequenceEqual(other.Segments);
         }
     }

src/ImageSharp/MetaData/Profiles/ICC/Curves/IccResponseCurve.cs

@@ -60,7 +60,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
             }
 
             return this.CurveType == other.CurveType
-                && this.XyzValues.SequenceEqual(other.XyzValues)
+                && this.XyzValues.AsSpan().SequenceEqual(other.XyzValues)
                 && this.EqualsResponseArray(other);
         }
 

src/ImageSharp/MetaData/Profiles/ICC/Curves/IccSampledCurveElement.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
@@ -34,7 +33,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
         {
             if (base.Equals(other) && other is IccSampledCurveElement segment)
             {
-                return this.CurveEntries.SequenceEqual(segment.CurveEntries);
+                return this.CurveEntries.AsSpan().SequenceEqual(segment.CurveEntries);
             }
 
             return false;

src/ImageSharp/MetaData/Profiles/ICC/MultiProcessElements/IccMatrixProcessElement.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 using SixLabors.ImageSharp.Primitives;
 
@@ -47,7 +46,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
             if (base.Equals(other) && other is IccMatrixProcessElement element)
             {
                 return this.EqualsMatrix(element)
-                    && this.MatrixOx1.SequenceEqual(element.MatrixOx1);
+                    && this.MatrixOx1.AsSpan().SequenceEqual(element.MatrixOx1);
             }
 
             return false;

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccColorantOrderTagDataEntry.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
@@ -59,7 +58,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 return true;
             }
 
-            return base.Equals(other) && this.ColorantNumber.SequenceEqual(other.ColorantNumber);
+            return base.Equals(other) && this.ColorantNumber.AsSpan().SequenceEqual(other.ColorantNumber);
         }
 
         /// <inheritdoc/>

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccCurveTagDataEntry.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
@@ -107,7 +106,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 return true;
             }
 
-            return base.Equals(other) && this.CurveData.SequenceEqual(other.CurveData);
+            return base.Equals(other) && this.CurveData.AsSpan().SequenceEqual(other.CurveData);
         }
 
         /// <inheritdoc/>

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccDataTagDataEntry.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 using System.Text;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
@@ -83,7 +82,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 return true;
             }
 
-            return base.Equals(other) && this.Data.SequenceEqual(other.Data) && this.IsAscii == other.IsAscii;
+            return base.Equals(other) && this.Data.AsSpan().SequenceEqual(other.Data) && this.IsAscii == other.IsAscii;
         }
 
         /// <inheritdoc/>

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccFix16ArrayTagDataEntry.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
@@ -56,7 +55,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 return true;
             }
 
-            return base.Equals(other) && this.Data.SequenceEqual(other.Data);
+            return base.Equals(other) && this.Data.AsSpan().SequenceEqual(other.Data);
         }
 
         /// <inheritdoc/>

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccProfileSequenceIdentifierTagDataEntry.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
@@ -57,7 +56,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 return true;
             }
 
-            return base.Equals(other) && this.Data.SequenceEqual(other.Data);
+            return base.Equals(other) && this.Data.AsSpan().SequenceEqual(other.Data);
         }
 
         /// <inheritdoc />

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccScreeningTagDataEntry.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
@@ -68,7 +67,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 
             return base.Equals(other)
                 && this.Flags == other.Flags
-                && this.Channels.SequenceEqual(other.Channels);
+                && this.Channels.AsSpan().SequenceEqual(other.Channels);
         }
 
         /// <inheritdoc />

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccUFix16ArrayTagDataEntry.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
@@ -56,7 +55,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 return true;
             }
 
-            return base.Equals(other) && this.Data.SequenceEqual(other.Data);
+            return base.Equals(other) && this.Data.AsSpan().SequenceEqual(other.Data);
         }
 
         /// <inheritdoc/>

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccUInt16ArrayTagDataEntry.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
@@ -56,7 +55,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 return true;
             }
 
-            return base.Equals(other) && this.Data.SequenceEqual(other.Data);
+            return base.Equals(other) && this.Data.AsSpan().SequenceEqual(other.Data);
         }
 
         /// <inheritdoc/>

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccUInt32ArrayTagDataEntry.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
@@ -56,7 +55,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 return true;
             }
 
-            return base.Equals(other) && this.Data.SequenceEqual(other.Data);
+            return base.Equals(other) && this.Data.AsSpan().SequenceEqual(other.Data);
         }
 
         /// <inheritdoc/>

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccUInt64ArrayTagDataEntry.cs

@@ -56,7 +56,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 return true;
             }
 
-            return base.Equals(other) && this.Data.SequenceEqual(other.Data);
+            return base.Equals(other) && this.Data.AsSpan().SequenceEqual(other.Data);
         }
 
         /// <inheritdoc/>

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccUInt8ArrayTagDataEntry.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
@@ -56,7 +55,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 return true;
             }
 
-            return base.Equals(other) && this.Data.SequenceEqual(other.Data);
+            return base.Equals(other) && this.Data.AsSpan().SequenceEqual(other.Data);
         }
 
         /// <inheritdoc/>

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccUcrBgTagDataEntry.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
@@ -77,8 +76,8 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
             }
 
             return base.Equals(other)
-                && this.UcrCurve.SequenceEqual(other.UcrCurve)
-                && this.BgCurve.SequenceEqual(other.BgCurve)
+                && this.UcrCurve.AsSpan().SequenceEqual(other.UcrCurve)
+                && this.BgCurve.AsSpan().SequenceEqual(other.BgCurve)
                 && string.Equals(this.Description, other.Description);
         }
 

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccUnknownTagDataEntry.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
@@ -56,7 +55,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 return true;
             }
 
-            return base.Equals(other) && this.Data.SequenceEqual(other.Data);
+            return base.Equals(other) && this.Data.AsSpan().SequenceEqual(other.Data);
         }
 
         /// <inheritdoc/>

src/ImageSharp/MetaData/Profiles/ICC/TagDataEntries/IccXyzTagDataEntry.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 using System.Numerics;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
@@ -15,7 +14,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
         /// <summary>
         /// Initializes a new instance of the <see cref="IccXyzTagDataEntry"/> class.
         /// </summary>
-        /// <param name="data">The XYZ numbers</param>
+        /// <param name="data">The XYZ numbers.</param>
         public IccXyzTagDataEntry(Vector3[] data)
             : this(data, IccProfileTag.Unknown)
         {
@@ -34,7 +33,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
         }
 
         /// <summary>
-        /// Gets the XYZ numbers
+        /// Gets the XYZ numbers.
         /// </summary>
         public Vector3[] Data { get; }
 
@@ -43,7 +42,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
         {
             if (base.Equals(other) && other is IccXyzTagDataEntry entry)
             {
-                return this.Data.SequenceEqual(entry.Data);
+                return this.Data.AsSpan().SequenceEqual(entry.Data);
             }
 
             return false;

src/ImageSharp/MetaData/Profiles/ICC/Various/IccClut.cs

@@ -130,7 +130,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 && this.DataType == other.DataType
                 && this.InputChannelCount == other.InputChannelCount
                 && this.OutputChannelCount == other.OutputChannelCount
-                && this.GridPointCount.SequenceEqual(other.GridPointCount);
+                && this.GridPointCount.AsSpan().SequenceEqual(other.GridPointCount);
         }
 
         /// <inheritdoc/>
@@ -162,7 +162,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 
             for (int i = 0; i < this.Values.Length; i++)
             {
-                if (!this.Values[i].SequenceEqual(other.Values[i]))
+                if (!this.Values[i].AsSpan().SequenceEqual(other.Values[i]))
                 {
                     return false;
                 }

src/ImageSharp/MetaData/Profiles/ICC/Various/IccLut.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
-using System.Linq;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
@@ -68,7 +67,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
                 return true;
             }
 
-            return this.Values.SequenceEqual(other.Values);
+            return this.Values.AsSpan().SequenceEqual(other.Values);
         }
     }
 }

src/ImageSharp/MetaData/Profiles/ICC/Various/IccProfileId.cs

@@ -13,7 +13,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
         /// <summary>
         /// A profile ID with all values set to zero
         /// </summary>
-        public static readonly IccProfileId Zero = new IccProfileId(0, 0, 0, 0);
+        public static readonly IccProfileId Zero = default;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="IccProfileId"/> struct.
@@ -53,16 +53,7 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
         /// <summary>
         /// Gets a value indicating whether the ID is set or just consists of zeros
         /// </summary>
-        public bool IsSet
-        {
-            get
-            {
-                return this.Part1 != 0
-                    && this.Part2 != 0
-                    && this.Part3 != 0
-                    && this.Part4 != 0;
-            }
-        }
+        public bool IsSet => !this.Equals(Zero);
 
         /// <summary>
         /// Compares two <see cref="IccProfileId"/> objects for equality.
@@ -131,4 +122,4 @@ namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
             return value.ToString("X").PadLeft(8, '0');
         }
     }
-}
+}

src/ImageSharp/MetaData/Profiles/ICC/Various/IccScreeningChannel.cs

@@ -2,12 +2,14 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
+using System.Runtime.InteropServices;
 
 namespace SixLabors.ImageSharp.MetaData.Profiles.Icc
 {
     /// <summary>
     /// A single channel of a <see cref="IccScreeningTagDataEntry"/>
     /// </summary>
+    [StructLayout(LayoutKind.Sequential)]
     internal readonly struct IccScreeningChannel : IEquatable<IccScreeningChannel>
     {
         /// <summary>

tests/ImageSharp.Tests/Colorspaces/ColorSpaceEqualityTests.cs

@@ -19,18 +19,18 @@ namespace SixLabors.ImageSharp.Tests.Colorspaces
         internal static readonly Dictionary<string, IColorVector> EmptyDataLookup =
             new Dictionary<string, IColorVector>
                 {
-                    {nameof( CieLab), CieLab.Empty },
-                    {nameof( CieLch), CieLch.Empty },
-                    {nameof( CieLchuv), CieLchuv.Empty },
-                    {nameof( CieLuv), CieLuv.Empty },
-                    {nameof( CieXyz), CieXyz.Empty },
-                    {nameof( CieXyy), CieXyy.Empty },
-                    {nameof( Hsl), Hsl.Empty },
-                    {nameof( HunterLab), HunterLab.Empty },
-                    {nameof( Lms), Lms.Empty },
-                    {nameof( LinearRgb), LinearRgb.Empty },
-                    {nameof( Rgb), Rgb.Empty },
-                    {nameof( YCbCr), YCbCr.Empty }
+                    {nameof( CieLab), default(CieLab) },
+                    {nameof( CieLch), default(CieLch) },
+                    {nameof( CieLchuv), default(CieLchuv) },
+                    {nameof( CieLuv), default(CieLuv) },
+                    {nameof( CieXyz), default(CieXyz) },
+                    {nameof( CieXyy), default(CieXyy) },
+                    {nameof( Hsl), default(Hsl) },
+                    {nameof( HunterLab), default(HunterLab) },
+                    {nameof( Lms), default(Lms) },
+                    {nameof( LinearRgb), default(LinearRgb) },
+                    {nameof( Rgb), default(Rgb) },
+                    {nameof( YCbCr), default(YCbCr) }
                 };
 
         public static readonly IEnumerable<object[]> EmptyData = EmptyDataLookup.Select(x => new [] { x.Key });

tests/ImageSharp.Tests/MetaData/Profiles/ICC/Various/IccProfileIdTests.cs

@@ -0,0 +1,32 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using SixLabors.ImageSharp.MetaData.Profiles.Icc;
+using Xunit;
+
+namespace SixLabors.ImageSharp.Tests.Icc
+{
+    public class IccProfileIdTests
+    {
+        [Fact]
+        public void ZeroIsEqualToDefault()
+        {
+            Assert.True(IccProfileId.Zero.Equals(default));
+
+            Assert.False(default(IccProfileId).IsSet);
+        }
+
+        [Fact]
+        public void SetIsTrueWhenNonDefaultValue()
+        {
+            var id = new IccProfileId(1, 2, 3, 4);
+
+            Assert.True(id.IsSet);
+
+            Assert.Equal(1u, id.Part1);
+            Assert.Equal(2u, id.Part2);
+            Assert.Equal(3u, id.Part3);
+            Assert.Equal(4u, id.Part4);
+        }
+    }
+}