Add CieLuv

src/ImageSharp/ColorSpaces/CieLab.cs

@@ -173,7 +173,12 @@ namespace ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override int GetHashCode()
         {
-            return this.backingVector.GetHashCode();
+            unchecked
+            {
+                int hashCode = this.WhitePoint.GetHashCode();
+                hashCode = (hashCode * 397) ^ this.backingVector.GetHashCode();
+                return hashCode;
+            }
         }
 
         /// <inheritdoc/>
@@ -203,7 +208,8 @@ namespace ImageSharp.ColorSpaces
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public bool Equals(CieLab other)
         {
-            return this.backingVector.Equals(other.backingVector);
+            return this.backingVector.Equals(other.backingVector)
+                && this.WhitePoint.Equals(other.WhitePoint);
         }
 
         /// <inheritdoc/>
@@ -212,7 +218,8 @@ namespace ImageSharp.ColorSpaces
         {
             Vector3 result = Vector3.Abs(this.backingVector - other.backingVector);
 
-            return result.X <= precision
+            return this.WhitePoint.Equals(other.WhitePoint)
+                && result.X <= precision
                 && result.Y <= precision
                 && result.Z <= precision;
         }

src/ImageSharp/ColorSpaces/CieLch.cs

@@ -173,7 +173,12 @@ namespace ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override int GetHashCode()
         {
-            return this.backingVector.GetHashCode();
+            unchecked
+            {
+                int hashCode = this.WhitePoint.GetHashCode();
+                hashCode = (hashCode * 397) ^ this.backingVector.GetHashCode();
+                return hashCode;
+            }
         }
 
         /// <inheritdoc/>
@@ -203,7 +208,8 @@ namespace ImageSharp.ColorSpaces
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public bool Equals(CieLch other)
         {
-            return this.backingVector.Equals(other.backingVector);
+            return this.backingVector.Equals(other.backingVector)
+                && this.WhitePoint.Equals(other.WhitePoint);
         }
 
         /// <inheritdoc/>
@@ -212,9 +218,10 @@ namespace ImageSharp.ColorSpaces
         {
             Vector3 result = Vector3.Abs(this.backingVector - other.backingVector);
 
-            return result.X <= precision
-                && result.Y <= precision
-                && result.Z <= precision;
+            return this.WhitePoint.Equals(other.WhitePoint)
+                   && result.X <= precision
+                   && result.Y <= precision
+                   && result.Z <= precision;
         }
 
         /// <summary>

src/ImageSharp/ColorSpaces/CieLuv.cs

@@ -0,0 +1,229 @@
+// <copyright file="CieLuv.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp.ColorSpaces
+{
+    using System;
+    using System.ComponentModel;
+    using System.Numerics;
+    using System.Runtime.CompilerServices;
+
+    /// <summary>
+    /// The CIE 1976 (L*, u*, v*) color space, commonly known by its abbreviation CIELUV, is a color space adopted by the International
+    /// Commission on Illumination (CIE) in 1976, as a simple-to-compute transformation of the 1931 CIE XYZ color space, but which
+    /// attempted perceptual uniformity
+    /// <see href="https://en.wikipedia.org/wiki/CIELUV"/>
+    /// </summary>
+    public struct CieLuv : IColorVector, IEquatable<CieLuv>, IAlmostEquatable<CieLuv, float>
+    {
+        /// <summary>
+        /// D65 standard illuminant.
+        /// Used when reference white is not specified explicitly.
+        /// </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(CieLuv);
+
+        /// <summary>
+        /// The backing vector for SIMD support.
+        /// </summary>
+        private readonly Vector3 backingVector;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CieLuv"/> struct.
+        /// </summary>
+        /// <param name="l">The lightness dimension.</param>
+        /// <param name="u">The blue-yellow chromaticity coordinate of the given whitepoint.</param>
+        /// <param name="v">The red-green chromaticity coordinate of the given whitepoint.</param>
+        /// <remarks>Uses <see cref="DefaultWhitePoint"/> as white point.</remarks>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public CieLuv(float l, float u, float v)
+            : this(new Vector3(l, u, v), DefaultWhitePoint)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CieLuv"/> struct.
+        /// </summary>
+        /// <param name="l">The lightness dimension.</param>
+        /// <param name="u">The blue-yellow chromaticity coordinate of the given whitepoint.</param>
+        /// <param name="v">The red-green chromaticity coordinate of the given whitepoint.</param>
+        /// <param name="whitePoint">The reference white point. <see cref="Illuminants"/></param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public CieLuv(float l, float u, float v, CieXyz whitePoint)
+            : this(new Vector3(l, u, v), whitePoint)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CieLuv"/> struct.
+        /// </summary>
+        /// <param name="vector">The vector representing the l, u, v components.</param>
+        /// <remarks>Uses <see cref="DefaultWhitePoint"/> as white point.</remarks>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public CieLuv(Vector3 vector)
+            : this(vector, DefaultWhitePoint)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CieLuv"/> struct.
+        /// </summary>
+        /// <param name="vector">The vector representing the l, u, v components.</param>
+        /// <param name="whitePoint">The reference white point. <see cref="Illuminants"/></param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public CieLuv(Vector3 vector, CieXyz whitePoint)
+            : this()
+        {
+            this.backingVector = vector;
+            this.WhitePoint = whitePoint;
+        }
+
+        /// <summary>
+        /// Gets the reference white point of this color
+        /// </summary>
+        public CieXyz WhitePoint
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get;
+        }
+
+        /// <summary>
+        /// Gets the lightness dimension
+        /// <remarks>A value usually ranging between 0 and 100.</remarks>
+        /// </summary>
+        public float L
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => this.backingVector.X;
+        }
+
+        /// <summary>
+        /// Gets the blue-yellow chromaticity coordinate of the given whitepoint.
+        /// <remarks>A value usually ranging between -100 and 100.</remarks>
+        /// </summary>
+        public float U
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => this.backingVector.Y;
+        }
+
+        /// <summary>
+        /// Gets the red-green chromaticity coordinate of the given whitepoint.
+        /// <remarks>A value usually ranging between -100 and 100.</remarks>
+        /// </summary>
+        public float V
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            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
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get => this.backingVector;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="CieLuv"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="CieLuv"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="CieLuv"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the current left is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static bool operator ==(CieLuv left, CieLuv right)
+        {
+            return left.Equals(right);
+        }
+
+        /// <summary>
+        /// Compares two <see cref="CieLuv"/> objects for inequality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="CieLuv"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="CieLuv"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the current left is unequal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static bool operator !=(CieLuv left, CieLuv right)
+        {
+            return !left.Equals(right);
+        }
+
+        /// <inheritdoc/>
+        public override int GetHashCode()
+        {
+            unchecked
+            {
+                int hashCode = this.WhitePoint.GetHashCode();
+                hashCode = (hashCode * 397) ^ this.backingVector.GetHashCode();
+                return hashCode;
+            }
+        }
+
+        /// <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.##} ]";
+        }
+
+        /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public override bool Equals(object obj)
+        {
+            if (obj is CieLuv)
+            {
+                return this.Equals((CieLuv)obj);
+            }
+
+            return false;
+        }
+
+        /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public bool Equals(CieLuv other)
+        {
+            return this.backingVector.Equals(other.backingVector)
+                   && this.WhitePoint.Equals(other.WhitePoint);
+        }
+
+        /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public bool AlmostEquals(CieLuv other, float precision)
+        {
+            Vector3 result = Vector3.Abs(this.backingVector - other.backingVector);
+
+            return this.WhitePoint.Equals(other.WhitePoint)
+                   && result.X <= precision
+                   && result.Y <= precision
+                   && result.Z <= precision;
+        }
+    }
+}

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

@@ -36,11 +36,11 @@ namespace ImageSharp.ColorSpaces.Conversion
         }
 
         /// <summary>
-        /// Adapts a <see cref="LinearRgb"/> color from the source working space to working space set in <see cref="TargetRgbWorkingSpace"/>.
+        /// Adapts <see cref="CieLab"/> color from the source white point to white point set in <see cref="TargetLabWhitePoint"/>.
         /// </summary>
         /// <param name="color">The color to adapt</param>
         /// <returns>The adapted color</returns>
-        public LinearRgb Adapt(LinearRgb color)
+        public CieLab Adapt(CieLab color)
         {
             Guard.NotNull(color, nameof(color));
 
@@ -49,43 +49,44 @@ namespace ImageSharp.ColorSpaces.Conversion
                 throw new InvalidOperationException("Cannot perform chromatic adaptation, provide a chromatic adaptation method and white point.");
             }
 
-            if (color.WorkingSpace.Equals(this.TargetRgbWorkingSpace))
+            if (color.WhitePoint.Equals(this.TargetLabWhitePoint))
             {
                 return color;
             }
 
-            // Conversion to XYZ
-            LinearRgbToCieXyzConverter converterToXYZ = this.GetLinearRgbToCieXyzConverter(color.WorkingSpace);
-            CieXyz unadapted = converterToXYZ.Convert(color);
-
-            // Adaptation
-            CieXyz adapted = this.ChromaticAdaptation.Transform(unadapted, color.WorkingSpace.WhitePoint, this.TargetRgbWorkingSpace.WhitePoint);
-
-            // Conversion back to RGB
-            CieXyzToLinearRgbConverter converterToRGB = this.GetCieXyxToLinearRgbConverter(this.TargetRgbWorkingSpace);
-            return converterToRGB.Convert(adapted);
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLab(xyzColor);
         }
 
         /// <summary>
-        /// Adapts an <see cref="Rgb"/> color from the source working space to working space set in <see cref="TargetRgbWorkingSpace"/>.
+        /// Adapts <see cref="CieLch"/> color from the source white point to white point set in <see cref="TargetLabWhitePoint"/>.
         /// </summary>
         /// <param name="color">The color to adapt</param>
         /// <returns>The adapted color</returns>
-        public Rgb Adapt(Rgb color)
+        public CieLch Adapt(CieLch color)
         {
             Guard.NotNull(color, nameof(color));
 
-            LinearRgb linearInput = this.ToLinearRgb(color);
-            LinearRgb linearOutput = this.Adapt(linearInput);
-            return this.ToRgb(linearOutput);
+            if (!this.IsChromaticAdaptationPerformed)
+            {
+                throw new InvalidOperationException("Cannot perform chromatic adaptation, provide a chromatic adaptation method and white point.");
+            }
+
+            if (color.WhitePoint.Equals(this.TargetLabWhitePoint))
+            {
+                return color;
+            }
+
+            CieLab labColor = this.ToCieLab(color);
+            return this.ToCieLch(labColor);
         }
 
         /// <summary>
-        /// Adapts <see cref="CieLab"/> color from the source white point to white point set in <see cref="TargetLabWhitePoint"/>.
+        /// Adapts <see cref="CieLuv"/> color from the source white point to white point set in <see cref="TargetLuvWhitePoint"/>.
         /// </summary>
         /// <param name="color">The color to adapt</param>
         /// <returns>The adapted color</returns>
-        public CieLab Adapt(CieLab color)
+        public CieLuv Adapt(CieLuv color)
         {
             Guard.NotNull(color, nameof(color));
 
@@ -94,13 +95,13 @@ namespace ImageSharp.ColorSpaces.Conversion
                 throw new InvalidOperationException("Cannot perform chromatic adaptation, provide a chromatic adaptation method and white point.");
             }
 
-            if (color.WhitePoint.Equals(this.TargetLabWhitePoint))
+            if (color.WhitePoint.Equals(this.TargetLuvWhitePoint))
             {
                 return color;
             }
 
             CieXyz xyzColor = this.ToCieXyz(color);
-            return this.ToCieLab(xyzColor);
+            return this.ToCieLuv(xyzColor);
         }
 
         /// <summary>
@@ -127,11 +128,11 @@ namespace ImageSharp.ColorSpaces.Conversion
         }
 
         /// <summary>
-        /// Adapts <see cref="CieLch"/> color from the source white point to white point set in <see cref="TargetLabWhitePoint"/>.
+        /// Adapts a <see cref="LinearRgb"/> color from the source working space to working space set in <see cref="TargetRgbWorkingSpace"/>.
         /// </summary>
         /// <param name="color">The color to adapt</param>
         /// <returns>The adapted color</returns>
-        public CieLch Adapt(CieLch color)
+        public LinearRgb Adapt(LinearRgb color)
         {
             Guard.NotNull(color, nameof(color));
 
@@ -140,13 +141,35 @@ namespace ImageSharp.ColorSpaces.Conversion
                 throw new InvalidOperationException("Cannot perform chromatic adaptation, provide a chromatic adaptation method and white point.");
             }
 
-            if (color.WhitePoint.Equals(this.TargetLabWhitePoint))
+            if (color.WorkingSpace.Equals(this.TargetRgbWorkingSpace))
             {
                 return color;
             }
 
-            CieLab labColor = this.ToCieLab(color);
-            return this.ToCieLch(labColor);
+            // Conversion to XYZ
+            LinearRgbToCieXyzConverter converterToXYZ = this.GetLinearRgbToCieXyzConverter(color.WorkingSpace);
+            CieXyz unadapted = converterToXYZ.Convert(color);
+
+            // Adaptation
+            CieXyz adapted = this.ChromaticAdaptation.Transform(unadapted, color.WorkingSpace.WhitePoint, this.TargetRgbWorkingSpace.WhitePoint);
+
+            // Conversion back to RGB
+            CieXyzToLinearRgbConverter converterToRGB = this.GetCieXyxToLinearRgbConverter(this.TargetRgbWorkingSpace);
+            return converterToRGB.Convert(adapted);
+        }
+
+        /// <summary>
+        /// Adapts an <see cref="Rgb"/> color from the source working space to working space set in <see cref="TargetRgbWorkingSpace"/>.
+        /// </summary>
+        /// <param name="color">The color to adapt</param>
+        /// <returns>The adapted color</returns>
+        public Rgb Adapt(Rgb color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            LinearRgb linearInput = this.ToLinearRgb(color);
+            LinearRgb linearOutput = this.Adapt(linearInput);
+            return this.ToRgb(linearOutput);
         }
     }
 }

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

@@ -40,6 +40,19 @@ namespace ImageSharp.ColorSpaces.Conversion
             return this.Adapt(unadapted);
         }
 
+        /// <summary>
+        /// Converts a <see cref="CieLuv"/> into a <see cref="CieLab"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLab"/></returns>
+        public CieLab ToCieLab(CieLuv color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLab(xyzColor);
+        }
+
         /// <summary>
         /// Converts a <see cref="CieXyy"/> into a <see cref="CieLab"/>
         /// </summary>

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

@@ -33,6 +33,19 @@ namespace ImageSharp.ColorSpaces.Conversion
             return CieLabToCieLchConverter.Convert(adapted);
         }
 
+        /// <summary>
+        /// Converts a <see cref="CieLuv"/> into a <see cref="CieLch"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLch"/></returns>
+        public CieLch ToCieLch(CieLuv color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLch(xyzColor);
+        }
+
         /// <summary>
         /// Converts a <see cref="CieXyy"/> into a <see cref="CieLch"/>
         /// </summary>

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

@@ -0,0 +1,178 @@
+// <copyright file="ColorSpaceConverter.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp.ColorSpaces.Conversion
+{
+    using ImageSharp.ColorSpaces;
+    using ImageSharp.ColorSpaces.Conversion.Implementation.CieLuv;
+
+    /// <summary>
+    /// Converts between color spaces ensuring that the color is adapted using chromatic adaptation.
+    /// </summary>
+    public partial class ColorSpaceConverter
+    {
+        /// <summary>
+        /// Converts a <see cref="CieLab"/> into a <see cref="CieLuv"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLuv"/></returns>
+        public CieLuv ToCieLuv(CieLab color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLuv(xyzColor);
+        }
+
+        /// <summary>
+        /// Converts a <see cref="CieLch"/> into a <see cref="CieLuv"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLuv"/></returns>
+        public CieLuv ToCieLuv(CieLch color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLuv(xyzColor);
+        }
+
+        /// <summary>
+        /// Converts a <see cref="CieXyy"/> into a <see cref="CieLuv"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLuv"/></returns>
+        public CieLuv ToCieLuv(CieXyy color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLuv(xyzColor);
+        }
+
+        /// <summary>
+        /// Converts a <see cref="CieXyz"/> into a <see cref="CieLuv"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLuv"/></returns>
+        public CieLuv ToCieLuv(CieXyz color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            // Adaptation
+            CieXyz adapted = !this.WhitePoint.Equals(this.TargetLabWhitePoint) && this.IsChromaticAdaptationPerformed
+                ? this.ChromaticAdaptation.Transform(color, this.WhitePoint, this.TargetLabWhitePoint)
+                : color;
+
+            // Conversion
+            CieXyzToCieLuvConverter converter = new CieXyzToCieLuvConverter(this.TargetLuvWhitePoint);
+            return converter.Convert(adapted);
+        }
+
+        /// <summary>
+        /// Converts a <see cref="Cmyk"/> into a <see cref="CieLuv"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLuv"/></returns>
+        public CieLuv ToCieLuv(Cmyk color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLuv(xyzColor);
+        }
+
+        /// <summary>
+        /// Converts a <see cref="Hsl"/> into a <see cref="CieLuv"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLuv"/></returns>
+        public CieLuv ToCieLuv(Hsl color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLuv(xyzColor);
+        }
+
+        /// <summary>
+        /// Converts a <see cref="Hsv"/> into a <see cref="CieLuv"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLuv"/></returns>
+        public CieLuv ToCieLuv(Hsv color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLuv(xyzColor);
+        }
+
+        /// <summary>
+        /// Converts a <see cref="HunterLab"/> into a <see cref="CieLuv"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLuv"/></returns>
+        public CieLuv ToCieLuv(HunterLab color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLuv(xyzColor);
+        }
+
+        /// <summary>
+        /// Converts a <see cref="Lms"/> into a <see cref="CieLuv"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLuv"/></returns>
+        public CieLuv ToCieLuv(Lms color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLuv(xyzColor);
+        }
+
+        /// <summary>
+        /// Converts a <see cref="LinearRgb"/> into a <see cref="CieLuv"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLuv"/></returns>
+        public CieLuv ToCieLuv(LinearRgb color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLuv(xyzColor);
+        }
+
+        /// <summary>
+        /// Converts a <see cref="Rgb"/> into a <see cref="CieLuv"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLuv"/></returns>
+        public CieLuv ToCieLuv(Rgb color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLuv(xyzColor);
+        }
+
+        /// <summary>
+        /// Converts a <see cref="YCbCr"/> into a <see cref="CieLuv"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieLuv"/></returns>
+        public CieLuv ToCieLuv(YCbCr color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToCieLuv(xyzColor);
+        }
+    }
+}

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

@@ -42,6 +42,20 @@ namespace ImageSharp.ColorSpaces.Conversion
             return this.ToCieXyy(xyzColor);
         }
 
+        /// <summary>
+        /// Converts a <see cref="CieLuv"/> into a <see cref="CieXyy"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieXyy"/></returns>
+        public CieXyy ToCieXyy(CieLuv color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+
+            return this.ToCieXyy(xyzColor);
+        }
+
         /// <summary>
         /// Converts a <see cref="CieXyz"/> into a <see cref="CieXyy"/>
         /// </summary>

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

@@ -7,6 +7,7 @@ namespace ImageSharp.ColorSpaces.Conversion
 {
     using ImageSharp.ColorSpaces;
     using ImageSharp.ColorSpaces.Conversion.Implementation.CieLab;
+    using ImageSharp.ColorSpaces.Conversion.Implementation.CieLuv;
     using ImageSharp.ColorSpaces.Conversion.Implementation.HunterLab;
     using ImageSharp.ColorSpaces.Conversion.Implementation.Rgb;
 
@@ -17,6 +18,8 @@ namespace ImageSharp.ColorSpaces.Conversion
     {
         private static readonly CieLabToCieXyzConverter CieLabToCieXyzConverter = new CieLabToCieXyzConverter();
 
+        private static readonly CieLuvToCieXyzConverter CieLuvToCieXyzConverter = new CieLuvToCieXyzConverter();
+
         private static readonly HunterLabToCieXyzConverter HunterLabToCieXyzConverter = new HunterLabToCieXyzConverter();
 
         private LinearRgbToCieXyzConverter linearRgbToCieXyzConverter;
@@ -57,6 +60,26 @@ namespace ImageSharp.ColorSpaces.Conversion
             return this.ToCieXyz(labColor);
         }
 
+        /// <summary>
+        /// Converts a <see cref="CieLuv"/> into a <see cref="CieXyz"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="CieXyz"/></returns>
+        public CieXyz ToCieXyz(CieLuv color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            // Conversion
+            CieXyz unadapted = CieLuvToCieXyzConverter.Convert(color);
+
+            // Adaptation
+            CieXyz adapted = color.WhitePoint.Equals(this.WhitePoint) || !this.IsChromaticAdaptationPerformed
+                              ? unadapted
+                              : this.Adapt(unadapted, color.WhitePoint);
+
+            return adapted;
+        }
+
         /// <summary>
         /// Converts a <see cref="CieXyy"/> into a <see cref="CieXyz"/>
         /// </summary>

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

@@ -43,6 +43,20 @@ namespace ImageSharp.ColorSpaces.Conversion
             return this.ToCmyk(xyzColor);
         }
 
+        /// <summary>
+        /// Converts a <see cref="CieLuv"/> into a <see cref="Cmyk"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="Cmyk"/></returns>
+        public Cmyk ToCmyk(CieLuv color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+
+            return this.ToCmyk(xyzColor);
+        }
+
         /// <summary>
         /// Converts a <see cref="CieXyy"/> into a <see cref="Cmyk"/>
         /// </summary>

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

@@ -43,6 +43,20 @@ namespace ImageSharp.ColorSpaces.Conversion
             return this.ToHsl(xyzColor);
         }
 
+        /// <summary>
+        /// Converts a <see cref="CieLuv"/> into a <see cref="Hsl"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="Hsl"/></returns>
+        public Hsl ToHsl(CieLuv color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+
+            return this.ToHsl(xyzColor);
+        }
+
         /// <summary>
         /// Converts a <see cref="CieXyy"/> into a <see cref="Hsl"/>
         /// </summary>

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

@@ -43,6 +43,20 @@ namespace ImageSharp.ColorSpaces.Conversion
             return this.ToHsv(xyzColor);
         }
 
+        /// <summary>
+        /// Converts a <see cref="CieLuv"/> into a <see cref="Hsv"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="Hsv"/></returns>
+        public Hsv ToHsv(CieLuv color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+
+            return this.ToHsv(xyzColor);
+        }
+
         /// <summary>
         /// Converts a <see cref="CieXyy"/> into a <see cref="Hsv"/>
         /// </summary>

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

@@ -38,6 +38,19 @@ namespace ImageSharp.ColorSpaces.Conversion
             return this.ToHunterLab(xyzColor);
         }
 
+        /// <summary>
+        /// Converts a <see cref="CieLuv"/> into a <see cref="HunterLab"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="HunterLab"/></returns>
+        public HunterLab ToHunterLab(CieLuv color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToHunterLab(xyzColor);
+        }
+
         /// <summary>
         /// Converts a <see cref="CieXyy"/> into a <see cref="HunterLab"/>
         /// </summary>

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

@@ -42,6 +42,19 @@ namespace ImageSharp.ColorSpaces.Conversion
             return this.ToLinearRgb(xyzColor);
         }
 
+        /// <summary>
+        /// Converts a <see cref="CieLuv"/> into a <see cref="LinearRgb"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="LinearRgb"/></returns>
+        public LinearRgb ToLinearRgb(CieLuv color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToLinearRgb(xyzColor);
+        }
+
         /// <summary>
         /// Converts a <see cref="CieXyy"/> into a <see cref="LinearRgb"/>
         /// </summary>

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

@@ -38,6 +38,19 @@ namespace ImageSharp.ColorSpaces.Conversion
             return this.ToLms(xyzColor);
         }
 
+        /// <summary>
+        /// Converts a <see cref="CieLuv"/> into a <see cref="Lms"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="Lms"/></returns>
+        public Lms ToLms(CieLuv color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToLms(xyzColor);
+        }
+
         /// <summary>
         /// Converts a <see cref="CieXyy"/> into a <see cref="Lms"/>
         /// </summary>

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

@@ -40,6 +40,19 @@ namespace ImageSharp.ColorSpaces.Conversion
             return this.ToRgb(xyzColor);
         }
 
+        /// <summary>
+        /// Converts a <see cref="CieLuv"/> into a <see cref="Rgb"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="Rgb"/></returns>
+        public Rgb ToRgb(CieLuv color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+            return this.ToRgb(xyzColor);
+        }
+
         /// <summary>
         /// Converts a <see cref="CieXyy"/> into a <see cref="Rgb"/>
         /// </summary>

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

@@ -43,6 +43,20 @@ namespace ImageSharp.ColorSpaces.Conversion
             return this.ToYCbCr(xyzColor);
         }
 
+        /// <summary>
+        /// Converts a <see cref="CieLuv"/> into a <see cref="YCbCr"/>
+        /// </summary>
+        /// <param name="color">The color to convert.</param>
+        /// <returns>The <see cref="YCbCr"/></returns>
+        public YCbCr ToYCbCr(CieLuv color)
+        {
+            Guard.NotNull(color, nameof(color));
+
+            CieXyz xyzColor = this.ToCieXyz(color);
+
+            return this.ToYCbCr(xyzColor);
+        }
+
         /// <summary>
         /// Converts a <see cref="CieXyy"/> into a <see cref="YCbCr"/>
         /// </summary>

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.cs

@@ -33,6 +33,7 @@ namespace ImageSharp.ColorSpaces.Conversion
             this.WhitePoint = DefaultWhitePoint;
             this.LmsAdaptationMatrix = CieXyzAndLmsConverter.DefaultTransformationMatrix;
             this.ChromaticAdaptation = new VonKriesChromaticAdaptation(this.cachedCieXyzAndLmsConverter, this.cachedCieXyzAndLmsConverter);
+            this.TargetLuvWhitePoint = CieLuv.DefaultWhitePoint;
             this.TargetLabWhitePoint = CieLab.DefaultWhitePoint;
             this.TargetHunterLabWhitePoint = HunterLab.DefaultWhitePoint;
             this.TargetRgbWorkingSpace = Rgb.DefaultWorkingSpace;
@@ -44,6 +45,12 @@ namespace ImageSharp.ColorSpaces.Conversion
         /// </summary>
         public CieXyz WhitePoint { get; set; }
 
+        /// <summary>
+        /// Gets or sets the white point used *when creating* Luv/LChuv colors. (Luv/LChuv colors on the input already contain the white point information)
+        /// Defaults to: <see cref="CieLuv.DefaultWhitePoint"/>.
+        /// </summary>
+        public CieXyz TargetLuvWhitePoint { get; set; }
+
         /// <summary>
         /// Gets or sets the white point used *when creating* Lab/LChab colors. (Lab/LChab colors on the input already contain the white point information)
         /// Defaults to: <see cref="CieLab.DefaultWhitePoint"/>.

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

@@ -0,0 +1,80 @@
+// <copyright file="CieLuvToCieXyzConverter.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp.ColorSpaces.Conversion.Implementation.CieLuv
+{
+    using System.Runtime.CompilerServices;
+    using ImageSharp.ColorSpaces;
+
+    /// <summary>
+    /// Converts from <see cref="CieLuv"/> to <see cref="CieXyz"/>.
+    /// </summary>
+    internal class CieLuvToCieXyzConverter : IColorConversion<CieLuv, CieXyz>
+    {
+        /// <inheritdoc/>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public CieXyz Convert(CieLuv input)
+        {
+            DebugGuard.NotNull(input, nameof(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;
+
+            float u0 = ComputeU0(input.WhitePoint);
+            float v0 = ComputeV0(input.WhitePoint);
+
+            float y = l > CieConstants.Kappa * CieConstants.Epsilon
+                        ? MathF.Pow((l + 16) / 116, 3)
+                        : l / CieConstants.Kappa;
+
+            float a = ((52 * l / (u + (13 * l * u0))) - 1) / 3;
+            float b = -5 * y;
+            float c = -0.3333333F;
+            float d = y * ((39 * l / (v + (13 * l * v0))) - 5);
+
+            float x = (d - b) / (a - c);
+            float z = (x * a) + b;
+
+            if (float.IsNaN(x) || x < 0)
+            {
+                x = 0;
+            }
+
+            if (float.IsNaN(y) || y < 0)
+            {
+                y = 0;
+            }
+
+            if (float.IsNaN(z) || z < 0)
+            {
+                z = 0;
+            }
+
+            return new CieXyz(x, y, z);
+        }
+
+        /// <summary>
+        /// Calculates the blue-yellow chromacity based on the given whitepoint.
+        /// </summary>
+        /// <param name="input">The whitepoint</param>
+        /// <returns>The <see cref="float"/></returns>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private static float ComputeU0(CieXyz input)
+        {
+            return (4 * input.X) / (input.X + (15 * input.Y) + (3 * input.Z));
+        }
+
+        /// <summary>
+        /// Calculates the red-green chromacity based on the given whitepoint.
+        /// </summary>
+        /// <param name="input">The whitepoint</param>
+        /// <returns>The <see cref="float"/></returns>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private static float ComputeV0(CieXyz input)
+        {
+            return (9 * input.Y) / (input.X + (15 * input.Y) + (3 * input.Z));
+        }
+    }
+}

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

@@ -0,0 +1,102 @@
+// <copyright file="CieXyzToCieLuvConverter.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp.ColorSpaces.Conversion.Implementation.CieLuv
+{
+    using System.Runtime.CompilerServices;
+
+    using ImageSharp.ColorSpaces;
+
+    /// <summary>
+    /// Converts from <see cref="CieXyz"/> to <see cref="CieLuv"/>.
+    /// </summary>
+    internal class CieXyzToCieLuvConverter : IColorConversion<CieXyz, CieLuv>
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CieXyzToCieLuvConverter"/> class.
+        /// </summary>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public CieXyzToCieLuvConverter()
+            : this(CieLuv.DefaultWhitePoint)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CieXyzToCieLuvConverter"/> class.
+        /// </summary>
+        /// <param name="luvWhitePoint">The target reference luv white point</param>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public CieXyzToCieLuvConverter(CieXyz luvWhitePoint)
+        {
+            this.LuvWhitePoint = luvWhitePoint;
+        }
+
+        /// <summary>
+        /// Gets the target reference whitepoint. When not set, <see cref="CieLuv.DefaultWhitePoint"/> is used.
+        /// </summary>
+        public CieXyz LuvWhitePoint
+        {
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            get;
+        }
+
+        /// <inheritdoc />
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public CieLuv Convert(CieXyz input)
+        {
+            DebugGuard.NotNull(input, nameof(input));
+
+            // Conversion algorithm described here: http://www.brucelindbloom.com/index.html?Eqn_XYZ_to_Luv.html
+            float yr = input.Y / this.LuvWhitePoint.Y;
+            float up = ComputeUp(input);
+            float vp = ComputeVp(input);
+            float upr = ComputeUp(this.LuvWhitePoint);
+            float vpr = ComputeVp(this.LuvWhitePoint);
+
+            float l = yr > CieConstants.Epsilon ? ((116 * MathF.Pow(yr, 0.3333333F)) - 16F) : (CieConstants.Kappa * yr);
+
+            if (float.IsNaN(l) || l < 0)
+            {
+                l = 0;
+            }
+
+            float u = 13 * l * (up - upr);
+            float v = 13 * l * (vp - vpr);
+
+            if (float.IsNaN(u))
+            {
+                u = 0;
+            }
+
+            if (float.IsNaN(v))
+            {
+                v = 0;
+            }
+
+            return new CieLuv(l, u, v, this.LuvWhitePoint);
+        }
+
+        /// <summary>
+        /// Calculates the blue-yellow chromacity based on the given whitepoint.
+        /// </summary>
+        /// <param name="input">The whitepoint</param>
+        /// <returns>The <see cref="float"/></returns>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private static float ComputeUp(CieXyz input)
+        {
+            return (4 * input.X) / (input.X + (15 * input.Y) + (3 * input.Z));
+        }
+
+        /// <summary>
+        /// Calculates the red-green chromacity based on the given whitepoint.
+        /// </summary>
+        /// <param name="input">The whitepoint</param>
+        /// <returns>The <see cref="float"/></returns>
+        private static float ComputeVp(CieXyz input)
+        {
+            return (9 * input.Y) / (input.X + (15 * input.Y) + (3 * input.Z));
+        }
+    }
+}

src/ImageSharp/ColorSpaces/HunterLab.cs

@@ -169,7 +169,12 @@ namespace ImageSharp.ColorSpaces
         /// <inheritdoc/>
         public override int GetHashCode()
         {
-            return this.backingVector.GetHashCode();
+            unchecked
+            {
+                int hashCode = this.WhitePoint.GetHashCode();
+                hashCode = (hashCode * 397) ^ this.backingVector.GetHashCode();
+                return hashCode;
+            }
         }
 
         /// <inheritdoc/>
@@ -199,7 +204,8 @@ namespace ImageSharp.ColorSpaces
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public bool Equals(HunterLab other)
         {
-            return this.backingVector.Equals(other.backingVector);
+            return this.backingVector.Equals(other.backingVector)
+                && this.WhitePoint.Equals(other.WhitePoint);
         }
 
         /// <inheritdoc/>
@@ -208,9 +214,10 @@ namespace ImageSharp.ColorSpaces
         {
             Vector3 result = Vector3.Abs(this.backingVector - other.backingVector);
 
-            return result.X <= precision
-                && result.Y <= precision
-                && result.Z <= precision;
+            return this.WhitePoint.Equals(other.WhitePoint)
+                   && result.X <= precision
+                   && result.Y <= precision
+                   && result.Z <= precision;
         }
     }
 }

src/ImageSharp/ColorSpaces/Lms.cs

@@ -18,7 +18,7 @@ namespace ImageSharp.ColorSpaces
     public struct Lms : IColorVector, IEquatable<Lms>, IAlmostEquatable<Lms, float>
     {
         /// <summary>
-        /// Represents a <see cref="Lms"/> that has Y, Cb, and Cr values set to zero.
+        /// Represents a <see cref="Lms"/> that has L, M, and S values set to zero.
         /// </summary>
         public static readonly Lms Empty = default(Lms);
 
@@ -42,7 +42,7 @@ namespace ImageSharp.ColorSpaces
         /// <summary>
         /// Initializes a new instance of the <see cref="Lms"/> struct.
         /// </summary>
-        /// <param name="vector">The vector representing the x, y, z components.</param>
+        /// <param name="vector">The vector representing the l, m, s components.</param>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public Lms(Vector3 vector)
             : this()

tests/ImageSharp.Tests/Colors/Colorspaces/CieLabAndCieLchConversionTests.cs → tests/ImageSharp.Tests/Colorspaces/CieLabAndCieLchConversionTests.cs

@@ -1,4 +1,4 @@
-namespace ImageSharp.Tests.Colors.Colorspaces
+namespace ImageSharp.Tests.Colorspaces
 {
     using System.Collections.Generic;
     using ImageSharp.ColorSpaces;

tests/ImageSharp.Tests/Colorspaces/CieXyzAndCieLuvConversionTest.cs

@@ -0,0 +1,71 @@
+namespace ImageSharp.Tests
+{
+    using System.Collections.Generic;
+    using ImageSharp.ColorSpaces;
+    using ImageSharp.ColorSpaces.Conversion;
+
+    using Xunit;
+
+    /// <summary>
+    /// Tests <see cref="CieXyz"/>-<see cref="CieLuv"/> conversions.
+    /// </summary>
+    /// <remarks>
+    /// Test data generated using:
+    /// <see href="http://www.brucelindbloom.com/index.html?ColorCalculator.html"/>
+    /// </remarks>
+    public class CieXyzAndCieLuvConversionTest
+    {
+        private static readonly IEqualityComparer<float> FloatRoundingComparer = new FloatRoundingComparer(4);
+
+        /// <summary>
+        /// Tests conversion from <see cref="CieLuv"/> to <see cref="CieXyz"/> (<see cref="Illuminants.D65"/>).
+        /// </summary>
+        [Theory]
+        [InlineData(0, 0, 0, 0, 0, 0)]
+        [InlineData(0, 100, 50, 0, 0, 0)]
+        [InlineData(0.1, 100, 50, 0.000493, 0.000111, 0)]
+        [InlineData(70.0000, 86.3525, 2.8240, 0.569310, 0.407494, 0.365843)]
+        [InlineData(10.0000, -1.2345, -10.0000, 0.012191, 0.011260, 0.025939)]
+        [InlineData(100, 0, 0, 0.950470, 1.000000, 1.088830)]
+        [InlineData(1, 1, 1, 0.001255, 0.001107, 0.000137)]
+        public void Convert_Luv_to_Xyz(float l, float u, float v, float x, float y, float z)
+        {
+            // Arrange
+            CieLuv input = new CieLuv(l, u, v, Illuminants.D65);
+            ColorSpaceConverter converter = new ColorSpaceConverter { WhitePoint = Illuminants.D65, TargetLabWhitePoint = Illuminants.D65 };
+
+            // Act
+            CieXyz output = converter.ToCieXyz(input);
+
+            // Assert
+            Assert.Equal(x, output.X, FloatRoundingComparer);
+            Assert.Equal(y, output.Y, FloatRoundingComparer);
+            Assert.Equal(z, output.Z, FloatRoundingComparer);
+        }
+
+        /// <summary>
+        /// Tests conversion from <see cref="CieXyz"/> (<see cref="Illuminants.D65"/>) to <see cref="CieLuv"/>.
+        /// </summary>
+        [Theory]
+        [InlineData(0, 0, 0, 0, 0, 0)]
+        [InlineData(0.000493, 0.000111, 0, 0.1003, 0.9332, -0.0070)]
+        [InlineData(0.569310, 0.407494, 0.365843, 70.0000, 86.3524, 2.8240)]
+        [InlineData(0.012191, 0.011260, 0.025939, 9.9998, -1.2343, -9.9999)]
+        [InlineData(0.950470, 1.000000, 1.088830, 100, 0, 0)]
+        [InlineData(0.001255, 0.001107, 0.000137, 0.9999, 0.9998, 1.0004)]
+        public void Convert_Xyz_to_Luv(float x, float y, float z, float l, float u, float v)
+        {
+            // Arrange
+            CieXyz input = new CieXyz(x, y, z);
+            ColorSpaceConverter converter = new ColorSpaceConverter { WhitePoint = Illuminants.D65, TargetLabWhitePoint = Illuminants.D65 };
+
+            // Act
+            CieLuv output = converter.ToCieLuv(input);
+
+            // Assert
+            Assert.Equal(l, output.L, FloatRoundingComparer);
+            Assert.Equal(u, output.U, FloatRoundingComparer);
+            Assert.Equal(v, output.V, FloatRoundingComparer);
+        }
+    }
+}

tests/ImageSharp.Tests/Colors/Colorspaces/CieXyzAndCieXyyConversionTest.cs → tests/ImageSharp.Tests/Colorspaces/CieXyzAndCieXyyConversionTest.cs

@@ -1,4 +1,4 @@
-namespace ImageSharp.Tests.Colors.Colorspaces
+namespace ImageSharp.Tests.Colorspaces
 {
     using System.Collections.Generic;
 

tests/ImageSharp.Tests/Colors/Colorspaces/ColorConverterAdaptTest.cs → tests/ImageSharp.Tests/Colorspaces/ColorConverterAdaptTest.cs

@@ -9,7 +9,7 @@ namespace ImageSharp.Tests
     using Xunit;
 
     /// <summary>
-    /// Tests <see cref="ColorSpaceConverter.Adapt" /> methods.
+    /// Tests <see cref="M:ColorSpaceConverter.Adapt" /> methods.
     /// Test data generated using:
     /// <see cref="http://www.brucelindbloom.com/index.html?ChromAdaptCalc.html"/>
     /// <see cref="http://www.brucelindbloom.com/index.html?ColorCalculator.html"/>
@@ -63,7 +63,7 @@ namespace ImageSharp.Tests
         [Theory]
         [InlineData(0, 0, 0, 0, 0, 0)]
         [InlineData(22, 33, 1, 22.269869, 32.841164, 1.633926)]
-        public void Adapt_Lab_D65_To_D50(float l1, float a1, float b1, float l2, float a2, float b2)
+        public void Adapt_Lab_D50_To_D65(float l1, float a1, float b1, float l2, float a2, float b2)
         {
             // Arrange
             CieLab input = new CieLab(l1, a1, b1, Illuminants.D65);

tests/ImageSharp.Tests/Colors/Colorspaces/ColorSpaceEqualityTests.cs → tests/ImageSharp.Tests/Colorspaces/ColorSpaceEqualityTests.cs

@@ -21,6 +21,7 @@ namespace ImageSharp.Tests.Colors
                 {
                     CieLab.Empty,
                     CieLch.Empty,
+                    CieLuv.Empty,
                     CieXyz.Empty,
                     CieXyy.Empty,
                     Hsl.Empty,
@@ -37,6 +38,7 @@ namespace ImageSharp.Tests.Colors
                {
                { new CieLab(Vector3.One), new CieLab(Vector3.One), typeof(CieLab) },
                { new CieLch(Vector3.One), new CieLch(Vector3.One), typeof(CieLch) },
+               { new CieLuv(Vector3.One), new CieLuv(Vector3.One), typeof(CieLuv) },
                { new CieXyz(Vector3.One), new CieXyz(Vector3.One), typeof(CieXyz) },
                { new CieXyy(Vector3.One), new CieXyy(Vector3.One), typeof(CieXyy) },
                { new HunterLab(Vector3.One), new HunterLab(Vector3.One), typeof(HunterLab) },
@@ -54,6 +56,7 @@ namespace ImageSharp.Tests.Colors
                 // Valid object against null
                { new CieLab(Vector3.One), null, typeof(CieLab) },
                { new CieLch(Vector3.One), null, typeof(CieLch) },
+               { new CieLuv(Vector3.One), null, typeof(CieLuv) },
                { new CieXyz(Vector3.One), null, typeof(CieXyz) },
                { new CieXyy(Vector3.One), null, typeof(CieXyy) },
                { new HunterLab(Vector3.One), null, typeof(HunterLab) },
@@ -70,6 +73,7 @@ namespace ImageSharp.Tests.Colors
                {
                 // Valid objects of different types but not equal
                 { new CieLab(Vector3.One), new CieLch(Vector3.Zero), null },
+                { new CieLuv(Vector3.One), new CieLuv(Vector3.Zero), null },
                 { new CieXyz(Vector3.One), new HunterLab(Vector3.Zero), null },
                 { new Rgb(Vector3.One), new LinearRgb(Vector3.Zero), null },
                 { new Rgb(Vector3.One), new Lms(Vector3.Zero), null },
@@ -84,6 +88,7 @@ namespace ImageSharp.Tests.Colors
                 // Valid objects of the same type but not equal
                { new CieLab(Vector3.One), new CieLab(Vector3.Zero), typeof(CieLab) },
                { new CieLch(Vector3.One), new CieLch(Vector3.Zero), typeof(CieLch) },
+               { new CieLuv(Vector3.One), new CieLuv(Vector3.Zero), typeof(CieLuv) },
                { new CieXyz(Vector3.One), new CieXyz(Vector3.Zero), typeof(CieXyz) },
                { new CieXyy(Vector3.One), new CieXyy(Vector3.Zero), typeof(CieXyy) },
                { new HunterLab(Vector3.One), new HunterLab(Vector3.Zero), typeof(HunterLab) },
@@ -106,6 +111,8 @@ namespace ImageSharp.Tests.Colors
                 { new CieLab(0F, 0F, 0F), new CieLab(0F, .001F, 0F), typeof(CieLab), .001F },
                 { new CieLab(0F, 0F, 0F), new CieLab(0F, 0F, .0001F), typeof(CieLab), .0001F },
                 { new CieLab(0F, 0F, 0F), new CieLab(.0005F, 0F, 0F), typeof(CieLab), .0005F },
+                { new CieLch(0F, 0F, 0F), new CieLch(0F, .001F, 0F), typeof(CieLch), .001F },
+                { new CieLuv(0F, 0F, 0F), new CieLuv(0F, .001F, 0F), typeof(CieLuv), .001F },
                 { new CieXyz(380F, 380F, 380F), new CieXyz(380F, 380F, 380F), typeof(CieXyz), 0F },
                 { new CieXyz(380F, 380F, 380F), new CieXyz(380.001F, 380F, 380F), typeof(CieXyz), .01F },
                 { new CieXyz(380F, 380F, 380F), new CieXyz(380F, 380.001F, 380F), typeof(CieXyz), .01F },

tests/ImageSharp.Tests/Colors/Colorspaces/RgbAndCmykConversionTest.cs → tests/ImageSharp.Tests/Colorspaces/RgbAndCmykConversionTest.cs

@@ -1,4 +1,4 @@
-namespace ImageSharp.Tests.Colors.Colorspaces
+namespace ImageSharp.Tests.Colorspaces
 {
     using System.Collections.Generic;
 

tests/ImageSharp.Tests/Colors/Colorspaces/RgbAndHslConversionTest.cs → tests/ImageSharp.Tests/Colorspaces/RgbAndHslConversionTest.cs

@@ -1,4 +1,4 @@
-namespace ImageSharp.Tests.Colors.Colorspaces
+namespace ImageSharp.Tests.Colorspaces
 {
     using System.Collections.Generic;
 

tests/ImageSharp.Tests/Colors/Colorspaces/RgbAndHsvConversionTest.cs → tests/ImageSharp.Tests/Colorspaces/RgbAndHsvConversionTest.cs

@@ -1,4 +1,4 @@
-namespace ImageSharp.Tests.Colors.Colorspaces
+namespace ImageSharp.Tests.Colorspaces
 {
     using System.Collections.Generic;
 

tests/ImageSharp.Tests/Colors/Colorspaces/RgbAndYCbCrConversionTest.cs → tests/ImageSharp.Tests/Colorspaces/RgbAndYCbCrConversionTest.cs

@@ -1,4 +1,4 @@
-namespace ImageSharp.Tests.Colors.Colorspaces
+namespace ImageSharp.Tests.Colorspaces
 {
     using System.Collections.Generic;
 

tests/ImageSharp.Tests/Helpers/MathFTests.cs

@@ -88,7 +88,7 @@
         public void MathF_SinC_Is_Equal()
         {
             float f = 1.2345F;
-            float expected;
+            float expected = 1F;
             if (Math.Abs(f) > Constants.Epsilon)
             {
                 f *= (float)Math.PI;
@@ -96,11 +96,7 @@
 
                 expected = Math.Abs(sinC) < Constants.Epsilon ? 0F : sinC;
             }
-            else
-            {
-                expected = 1F;
-            }
-
+            
             Assert.Equal(MathF.SinC(1.2345F), expected);
         }