From 22efe501e8469e761dd47ab8a7f30c1a707681fc Mon Sep 17 00:00:00 2001
From: Jason Nelson <jason@carbonmade.com>
Date: Thu, 19 Apr 2018 09:21:28 -0700
Subject: [PATCH] Improve inlinability of color conversions

The null gaurds are not needed for structs.
---
 .../Conversion/ColorSpaceConverter.CieLab.cs  | 21 +----
 .../Conversion/ColorSpaceConverter.CieLch.cs  | 24 -----
 .../ColorSpaceConverter.CieLchuv.cs           | 26 ------
 .../Conversion/ColorSpaceConverter.CieLuv.cs  | 26 ------
 .../Conversion/ColorSpaceConverter.Cmyk.cs    | 26 ------
 .../Conversion/ColorSpaceConverter.Hsl.cs     | 27 ------
 .../ColorSpaceConverter.HunterLab.cs          | 26 ------
 .../ColorSpaceConverter.LinearRgb.cs          | 24 -----
 .../Conversion/ColorSpaceConverter.Lms.cs     | 27 ------
 .../Conversion/ColorSpaceConverter.Rgb.cs     | 24 -----
 .../Conversion/ColorSpaceConverter.YCbCr.cs   | 27 ------
 .../CieXyy/CieXyzAndCieXyyConverter.cs        |  1 -
 .../Cmyk/CmykAndRgbConverter.cs               |  1 -
 .../Implementation/Hsl/HslAndRgbConverter.cs  |  1 -
 .../Implementation/Hsv/HsvAndRgbConverter.cs  |  1 -
 .../CieXyzAndHunterLabConverterBase.cs        |  2 -
 .../HunterLab/CieXyzToHunterLabConverter.cs   |  1 -
 .../HunterLab/HunterLabToCieXyzConverter.cs   |  3 -
 .../Lms/CieXyzAndLmsConverter.cs              |  5 --
 .../Implementation/Lms/LmsAdaptationMatrix.cs | 90 +++++++++++++------
 .../Implementation/Rgb/LCompanding.cs         |  2 +-
 .../Rgb/LinearRgbAndCieXyzConverterBase.cs    |  5 +-
 .../Rgb/RgbToLinearRgbConverter.cs            |  2 -
 .../YCbCr/YCbCrAndRgbConverter.cs             |  1 -
 .../Conversion/VonKriesChromaticAdaptation.cs |  6 +-
 25 files changed, 68 insertions(+), 331 deletions(-)

diff --git a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLab.cs b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLab.cs
index 9268f3a70c..3f5c2e246e 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLab.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLab.cs
@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
-using SixLabors.ImageSharp.ColorSpaces;
 using SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLabColorSapce;
 using SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieLchColorSapce;
 
@@ -45,8 +44,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLab"/></returns>
         public CieLab ToCieLab(CieLchuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
@@ -58,8 +55,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <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);
         }
@@ -71,8 +66,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLab"/></returns>
         public CieLab ToCieLab(CieXyy color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
@@ -92,7 +85,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
                 : color;
 
             // Conversion
-            CieXyzToCieLabConverter converter = new CieXyzToCieLabConverter(this.TargetLabWhitePoint);
+            var converter = new CieXyzToCieLabConverter(this.TargetLabWhitePoint);
             return converter.Convert(adapted);
         }
 
@@ -116,8 +109,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLab"/></returns>
         public CieLab ToCieLab(Hsl color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
@@ -142,8 +133,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLab"/></returns>
         public CieLab ToCieLab(HunterLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
@@ -155,8 +144,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLab"/></returns>
         public CieLab ToCieLab(Lms color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
@@ -168,8 +155,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLab"/></returns>
         public CieLab ToCieLab(LinearRgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
@@ -181,8 +166,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLab"/></returns>
         public CieLab ToCieLab(Rgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
@@ -194,8 +177,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLab"/></returns>
         public CieLab ToCieLab(YCbCr color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLab(xyzColor);
         }
diff --git a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLch.cs b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLch.cs
index 13dae4b174..469875c024 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLch.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLch.cs
@@ -22,8 +22,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLch"/></returns>
         public CieLch ToCieLch(CieLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             // Adaptation
             CieLab adapted = this.IsChromaticAdaptationPerformed ? this.Adapt(color) : color;
 
@@ -38,8 +36,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLch"/></returns>
         public CieLch ToCieLch(CieLchuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
@@ -51,8 +47,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <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);
         }
@@ -64,8 +58,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLch"/></returns>
         public CieLch ToCieLch(CieXyy color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
@@ -77,8 +69,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLch"/></returns>
         public CieLch ToCieLch(CieXyz color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieLab labColor = this.ToCieLab(color);
             return this.ToCieLch(labColor);
         }
@@ -103,8 +93,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLch"/></returns>
         public CieLch ToCieLch(Hsl color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
@@ -116,8 +104,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLch"/></returns>
         public CieLch ToCieLch(Hsv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
@@ -129,8 +115,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLch"/></returns>
         public CieLch ToCieLch(HunterLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
@@ -142,8 +126,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLch"/></returns>
         public CieLch ToCieLch(LinearRgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
@@ -155,8 +137,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLch"/></returns>
         public CieLch ToCieLch(Lms color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
@@ -168,8 +148,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLch"/></returns>
         public CieLch ToCieLch(Rgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
@@ -181,8 +159,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLch"/></returns>
         public CieLch ToCieLch(YCbCr color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLch(xyzColor);
         }
diff --git a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLchuv.cs b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLchuv.cs
index cef63e73d2..a5b5220b99 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLchuv.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLchuv.cs
@@ -22,8 +22,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLchuv"/></returns>
         public CieLchuv ToCieLchuv(CieLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
@@ -35,8 +33,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLchuv"/></returns>
         public CieLchuv ToCieLchuv(CieLch color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
@@ -48,8 +44,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLchuv"/></returns>
         public CieLchuv ToCieLchuv(CieLuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             // Adaptation
             CieLuv adapted = this.IsChromaticAdaptationPerformed ? this.Adapt(color) : color;
 
@@ -64,8 +58,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLchuv"/></returns>
         public CieLchuv ToCieLchuv(CieXyy color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
@@ -77,8 +69,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLchuv"/></returns>
         public CieLchuv ToCieLchuv(CieXyz color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieLab labColor = this.ToCieLab(color);
             return this.ToCieLchuv(labColor);
         }
@@ -90,8 +80,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLchuv"/></returns>
         public CieLchuv ToCieLchuv(Cmyk color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
@@ -103,8 +91,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLchuv"/></returns>
         public CieLchuv ToCieLchuv(Hsl color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
@@ -116,8 +102,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLchuv"/></returns>
         public CieLchuv ToCieLchuv(Hsv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
@@ -129,8 +113,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLchuv"/></returns>
         public CieLchuv ToCieLchuv(HunterLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
@@ -142,8 +124,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLchuv"/></returns>
         public CieLchuv ToCieLchuv(LinearRgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
@@ -155,8 +135,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLchuv"/></returns>
         public CieLchuv ToCieLchuv(Lms color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
@@ -168,8 +146,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLchuv"/></returns>
         public CieLchuv ToCieLchuv(Rgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
@@ -181,8 +157,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLchuv"/></returns>
         public CieLchuv ToCieLchuv(YCbCr color)
         {
-            Guard.NotNull(color, nameof(color));
-
             CieXyz xyzColor = this.ToCieXyz(color);
             return this.ToCieLchuv(xyzColor);
         }
diff --git a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLuv.cs b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLuv.cs
index 04aee4897b..7260a818f6 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLuv.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLuv.cs
@@ -21,8 +21,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLuv"/></returns>
         public CieLuv ToCieLuv(CieLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
         }
@@ -34,8 +32,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLuv"/></returns>
         public CieLuv ToCieLuv(CieLch color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
         }
@@ -47,8 +43,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLab"/></returns>
         public CieLuv ToCieLuv(CieLchuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             // Conversion (perserving white point)
             CieLuv unadapted = CieLchuvToCieLuvConverter.Convert(color);
 
@@ -68,8 +62,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLuv"/></returns>
         public CieLuv ToCieLuv(CieXyy color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
         }
@@ -81,8 +73,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <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)
@@ -100,8 +90,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLuv"/></returns>
         public CieLuv ToCieLuv(Cmyk color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
         }
@@ -113,8 +101,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLuv"/></returns>
         public CieLuv ToCieLuv(Hsl color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
         }
@@ -126,8 +112,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLuv"/></returns>
         public CieLuv ToCieLuv(Hsv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
         }
@@ -139,8 +123,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLuv"/></returns>
         public CieLuv ToCieLuv(HunterLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
         }
@@ -152,8 +134,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLuv"/></returns>
         public CieLuv ToCieLuv(Lms color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
         }
@@ -165,8 +145,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLuv"/></returns>
         public CieLuv ToCieLuv(LinearRgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
         }
@@ -178,8 +156,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLuv"/></returns>
         public CieLuv ToCieLuv(Rgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
         }
@@ -191,8 +167,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="CieLuv"/></returns>
         public CieLuv ToCieLuv(YCbCr color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToCieLuv(xyzColor);
         }
diff --git a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Cmyk.cs b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Cmyk.cs
index 637c121ea0..64476d384c 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Cmyk.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Cmyk.cs
@@ -20,8 +20,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Cmyk"/></returns>
         public Cmyk ToCmyk(CieLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToCmyk(xyzColor);
@@ -34,8 +32,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Cmyk"/></returns>
         public Cmyk ToCmyk(CieLch color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToCmyk(xyzColor);
@@ -48,8 +44,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Cmyk"/></returns>
         public Cmyk ToCmyk(CieLchuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToCmyk(xyzColor);
@@ -62,8 +56,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Cmyk"/></returns>
         public Cmyk ToCmyk(CieLuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToCmyk(xyzColor);
@@ -76,8 +68,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Cmyk"/></returns>
         public Cmyk ToCmyk(CieXyy color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToCmyk(xyzColor);
@@ -90,8 +80,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Cmyk"/></returns>
         public Cmyk ToCmyk(CieXyz color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return CmykAndRgbConverter.Convert(rgb);
@@ -104,8 +92,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Cmyk"/></returns>
         public Cmyk ToCmyk(Hsl color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return CmykAndRgbConverter.Convert(rgb);
@@ -118,8 +104,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Cmyk"/></returns>
         public Cmyk ToCmyk(Hsv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return CmykAndRgbConverter.Convert(rgb);
@@ -132,8 +116,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Cmyk"/></returns>
         public Cmyk ToCmyk(HunterLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToCmyk(xyzColor);
@@ -146,8 +128,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Cmyk"/></returns>
         public Cmyk ToCmyk(LinearRgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return CmykAndRgbConverter.Convert(rgb);
@@ -160,8 +140,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Cmyk"/></returns>
         public Cmyk ToCmyk(Lms color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToCmyk(xyzColor);
@@ -174,8 +152,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Cmyk"/></returns>
         public Cmyk ToCmyk(Rgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             return CmykAndRgbConverter.Convert(color);
         }
 
@@ -186,8 +162,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Cmyk"/></returns>
         public Cmyk ToCmyk(YCbCr color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return CmykAndRgbConverter.Convert(rgb);
diff --git a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Hsl.cs b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Hsl.cs
index dbc31c52b8..909658a06b 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Hsl.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Hsl.cs
@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
-using SixLabors.ImageSharp.ColorSpaces;
 using SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HslColorSapce;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion
@@ -20,8 +19,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Hsl"/></returns>
         public Hsl ToHsl(CieLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToHsl(xyzColor);
@@ -34,8 +31,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Hsl"/></returns>
         public Hsl ToHsl(CieLch color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToHsl(xyzColor);
@@ -48,8 +43,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Hsl"/></returns>
         public Hsl ToHsl(CieLchuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToHsl(xyzColor);
@@ -62,8 +55,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Hsl"/></returns>
         public Hsl ToHsl(CieLuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToHsl(xyzColor);
@@ -76,8 +67,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Hsl"/></returns>
         public Hsl ToHsl(CieXyy color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToHsl(xyzColor);
@@ -90,8 +79,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Hsl"/></returns>
         public Hsl ToHsl(CieXyz color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return HslAndRgbConverter.Convert(rgb);
@@ -104,8 +91,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Hsl"/></returns>
         public Hsl ToHsl(Cmyk color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return HslAndRgbConverter.Convert(rgb);
@@ -118,8 +103,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Hsl"/></returns>
         public Hsl ToHsl(Hsv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return HslAndRgbConverter.Convert(rgb);
@@ -132,8 +115,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Hsl"/></returns>
         public Hsl ToHsl(HunterLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToHsl(xyzColor);
@@ -146,8 +127,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Hsl"/></returns>
         public Hsl ToHsl(LinearRgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return HslAndRgbConverter.Convert(rgb);
@@ -160,8 +139,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Hsl"/></returns>
         public Hsl ToHsl(Lms color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToHsl(xyzColor);
@@ -174,8 +151,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Hsl"/></returns>
         public Hsl ToHsl(Rgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             return HslAndRgbConverter.Convert(color);
         }
 
@@ -186,8 +161,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Hsl"/></returns>
         public Hsl ToHsl(YCbCr color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return HslAndRgbConverter.Convert(rgb);
diff --git a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.HunterLab.cs b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.HunterLab.cs
index f5ab4d645c..880a915517 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.HunterLab.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.HunterLab.cs
@@ -17,8 +17,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="HunterLab"/></returns>
         public HunterLab ToHunterLab(CieLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
         }
@@ -30,8 +28,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="HunterLab"/></returns>
         public HunterLab ToHunterLab(CieLch color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
         }
@@ -43,8 +39,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="HunterLab"/></returns>
         public HunterLab ToHunterLab(CieLchuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
         }
@@ -56,8 +50,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="HunterLab"/></returns>
         public HunterLab ToHunterLab(CieLuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
         }
@@ -69,8 +61,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="HunterLab"/></returns>
         public HunterLab ToHunterLab(CieXyy color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
         }
@@ -82,8 +72,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="HunterLab"/></returns>
         public HunterLab ToHunterLab(CieXyz color)
         {
-            Guard.NotNull(color, nameof(color));
-
             // Adaptation
             CieXyz adapted = !this.WhitePoint.Equals(this.TargetHunterLabWhitePoint) && this.IsChromaticAdaptationPerformed
                 ? this.ChromaticAdaptation.Transform(color, this.WhitePoint, this.TargetHunterLabWhitePoint)
@@ -100,8 +88,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="HunterLab"/></returns>
         public HunterLab ToHunterLab(Cmyk color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
         }
@@ -113,8 +99,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="HunterLab"/></returns>
         public HunterLab ToHunterLab(Hsl color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
         }
@@ -126,8 +110,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="HunterLab"/></returns>
         public HunterLab ToHunterLab(Hsv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
         }
@@ -139,8 +121,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="HunterLab"/></returns>
         public HunterLab ToHunterLab(LinearRgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
         }
@@ -152,8 +132,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="HunterLab"/></returns>
         public HunterLab ToHunterLab(Lms color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
         }
@@ -165,8 +143,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="HunterLab"/></returns>
         public HunterLab ToHunterLab(Rgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
         }
@@ -178,8 +154,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="HunterLab"/></returns>
         public HunterLab ToHunterLab(YCbCr color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToHunterLab(xyzColor);
         }
diff --git a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.LinearRgb.cs b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.LinearRgb.cs
index 7b45704afc..91c78b3ead 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.LinearRgb.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.LinearRgb.cs
@@ -21,8 +21,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="LinearRgb"/></returns>
         public LinearRgb ToLinearRgb(CieLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
         }
@@ -34,8 +32,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="LinearRgb"/></returns>
         public LinearRgb ToLinearRgb(CieLch color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
         }
@@ -47,8 +43,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="LinearRgb"/></returns>
         public LinearRgb ToLinearRgb(CieLchuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
         }
@@ -60,8 +54,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="LinearRgb"/></returns>
         public LinearRgb ToLinearRgb(CieLuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
         }
@@ -73,8 +65,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="LinearRgb"/></returns>
         public LinearRgb ToLinearRgb(CieXyy color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
         }
@@ -86,8 +76,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="LinearRgb"/></returns>
         public LinearRgb ToLinearRgb(CieXyz color)
         {
-            Guard.NotNull(color, nameof(color));
-
             // Adaptation
             CieXyz adapted = this.TargetRgbWorkingSpace.WhitePoint.Equals(this.WhitePoint) || !this.IsChromaticAdaptationPerformed
                 ? color
@@ -105,8 +93,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="LinearRgb"/></returns>
         public LinearRgb ToLinearRgb(Cmyk color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
             return this.ToLinearRgb(rgb);
         }
@@ -118,8 +104,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="LinearRgb"/></returns>
         public LinearRgb ToLinearRgb(Hsl color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
             return this.ToLinearRgb(rgb);
         }
@@ -144,8 +128,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="LinearRgb"/></returns>
         public LinearRgb ToLinearRgb(HunterLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
         }
@@ -157,8 +139,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="LinearRgb"/></returns>
         public LinearRgb ToLinearRgb(Lms color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLinearRgb(xyzColor);
         }
@@ -170,8 +150,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="LinearRgb"/></returns>
         public LinearRgb ToLinearRgb(Rgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             // Conversion
             return RgbToLinearRgbConverter.Convert(color);
         }
@@ -183,8 +161,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="LinearRgb"/></returns>
         public LinearRgb ToLinearRgb(YCbCr color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
             return this.ToLinearRgb(rgb);
         }
diff --git a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Lms.cs b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Lms.cs
index ac3adee639..1de0d70d37 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Lms.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Lms.cs
@@ -17,8 +17,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Lms"/></returns>
         public Lms ToLms(CieLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
         }
@@ -30,8 +28,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Lms"/></returns>
         public Lms ToLms(CieLch color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
         }
@@ -43,8 +39,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Lms"/></returns>
         public Lms ToLms(CieLchuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
         }
@@ -56,8 +50,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Lms"/></returns>
         public Lms ToLms(CieLuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
         }
@@ -69,8 +61,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Lms"/></returns>
         public Lms ToLms(CieXyy color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
         }
@@ -82,9 +72,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Lms"/></returns>
         public Lms ToLms(CieXyz color)
         {
-            Guard.NotNull(color, nameof(color));
-
-            // Conversion
             return this.cachedCieXyzAndLmsConverter.Convert(color);
         }
 
@@ -95,8 +82,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Lms"/></returns>
         public Lms ToLms(Cmyk color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
         }
@@ -108,8 +93,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Lms"/></returns>
         public Lms ToLms(Hsl color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
         }
@@ -121,8 +104,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Lms"/></returns>
         public Lms ToLms(Hsv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
         }
@@ -134,8 +115,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Lms"/></returns>
         public Lms ToLms(HunterLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
         }
@@ -147,8 +126,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Lms"/></returns>
         public Lms ToLms(LinearRgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
         }
@@ -160,8 +137,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Lms"/></returns>
         public Lms ToLms(Rgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
         }
@@ -173,8 +148,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Lms"/></returns>
         public Lms ToLms(YCbCr color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToLms(xyzColor);
         }
diff --git a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Rgb.cs b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Rgb.cs
index 6844e3a3ca..45beecf667 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Rgb.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Rgb.cs
@@ -19,8 +19,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Rgb"/></returns>
         public Rgb ToRgb(CieLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
         }
@@ -32,8 +30,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Rgb"/></returns>
         public Rgb ToRgb(CieLch color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
         }
@@ -45,8 +41,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Rgb"/></returns>
         public Rgb ToRgb(CieLchuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
         }
@@ -58,8 +52,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Rgb"/></returns>
         public Rgb ToRgb(CieLuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
         }
@@ -71,8 +63,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Rgb"/></returns>
         public Rgb ToRgb(CieXyy color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
         }
@@ -84,8 +74,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Rgb"/></returns>
         public Rgb ToRgb(CieXyz color)
         {
-            Guard.NotNull(color, nameof(color));
-
             // Conversion
             var linear = this.ToLinearRgb(color);
 
@@ -100,8 +88,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Rgb"/></returns>
         public Rgb ToRgb(Cmyk color)
         {
-            Guard.NotNull(color, nameof(color));
-
             // Conversion
             return CmykAndRgbConverter.Convert(color);
         }
@@ -113,8 +99,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Rgb"/></returns>
         public Rgb ToRgb(Hsv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             // Conversion
             return HsvAndRgbConverter.Convert(color);
         }
@@ -139,8 +123,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Rgb"/></returns>
         public Rgb ToRgb(HunterLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
         }
@@ -152,8 +134,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Rgb"/></returns>
         public Rgb ToRgb(LinearRgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             // Conversion
             return LinearRgbToRgbConverter.Convert(color);
         }
@@ -165,8 +145,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Rgb"/></returns>
         public Rgb ToRgb(Lms color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
             return this.ToRgb(xyzColor);
         }
@@ -178,8 +156,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="Rgb"/></returns>
         public Rgb ToRgb(YCbCr color)
         {
-            Guard.NotNull(color, nameof(color));
-
             // Conversion
             Rgb rgb = YCbCrAndRgbConverter.Convert(color);
 
diff --git a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.YCbCr.cs b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.YCbCr.cs
index 8da7dcb7ef..97d9f38185 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.YCbCr.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.YCbCr.cs
@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors and contributors.
 // Licensed under the Apache License, Version 2.0.
 
-using SixLabors.ImageSharp.ColorSpaces;
 using SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.YCbCrColorSapce;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion
@@ -20,8 +19,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="YCbCr"/></returns>
         public YCbCr ToYCbCr(CieLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToYCbCr(xyzColor);
@@ -34,8 +31,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="YCbCr"/></returns>
         public YCbCr ToYCbCr(CieLch color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToYCbCr(xyzColor);
@@ -48,8 +43,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="YCbCr"/></returns>
         public YCbCr ToYCbCr(CieLchuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToYCbCr(xyzColor);
@@ -62,8 +55,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="YCbCr"/></returns>
         public YCbCr ToYCbCr(CieLuv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToYCbCr(xyzColor);
@@ -76,8 +67,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="YCbCr"/></returns>
         public YCbCr ToYCbCr(CieXyy color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToYCbCr(xyzColor);
@@ -90,8 +79,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="YCbCr"/></returns>
         public YCbCr ToYCbCr(CieXyz color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return YCbCrAndRgbConverter.Convert(rgb);
@@ -104,8 +91,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="YCbCr"/></returns>
         public YCbCr ToYCbCr(Cmyk color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return YCbCrAndRgbConverter.Convert(rgb);
@@ -118,8 +103,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="YCbCr"/></returns>
         public YCbCr ToYCbCr(Hsl color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return YCbCrAndRgbConverter.Convert(rgb);
@@ -132,8 +115,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="YCbCr"/></returns>
         public YCbCr ToYCbCr(Hsv color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return YCbCrAndRgbConverter.Convert(rgb);
@@ -146,8 +127,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="YCbCr"/></returns>
         public YCbCr ToYCbCr(HunterLab color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToYCbCr(xyzColor);
@@ -160,8 +139,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="YCbCr"/></returns>
         public YCbCr ToYCbCr(LinearRgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var rgb = this.ToRgb(color);
 
             return YCbCrAndRgbConverter.Convert(rgb);
@@ -174,8 +151,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="YCbCr"/></returns>
         public YCbCr ToYCbCr(Lms color)
         {
-            Guard.NotNull(color, nameof(color));
-
             var xyzColor = this.ToCieXyz(color);
 
             return this.ToYCbCr(xyzColor);
@@ -188,8 +163,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
         /// <returns>The <see cref="YCbCr"/></returns>
         public YCbCr ToYCbCr(Rgb color)
         {
-            Guard.NotNull(color, nameof(color));
-
             return YCbCrAndRgbConverter.Convert(color);
         }
     }
diff --git a/src/ImageSharp/ColorSpaces/Conversion/Implementation/CieXyy/CieXyzAndCieXyyConverter.cs b/src/ImageSharp/ColorSpaces/Conversion/Implementation/CieXyy/CieXyzAndCieXyyConverter.cs
index 64fc84b1d4..bb7d6bb3ff 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/Implementation/CieXyy/CieXyzAndCieXyyConverter.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/Implementation/CieXyy/CieXyzAndCieXyyConverter.cs
@@ -3,7 +3,6 @@
 
 using System;
 using System.Runtime.CompilerServices;
-using SixLabors.ImageSharp.ColorSpaces;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CieXyyColorSapce
 {
diff --git a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Cmyk/CmykAndRgbConverter.cs b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Cmyk/CmykAndRgbConverter.cs
index 404bc811ff..ed86ec9a51 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Cmyk/CmykAndRgbConverter.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Cmyk/CmykAndRgbConverter.cs
@@ -3,7 +3,6 @@
 
 using System;
 using System.Runtime.CompilerServices;
-using SixLabors.ImageSharp.ColorSpaces;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.CmykColorSapce
 {
diff --git a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Hsl/HslAndRgbConverter.cs b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Hsl/HslAndRgbConverter.cs
index 3de3baddd3..2bdbbcecac 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Hsl/HslAndRgbConverter.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Hsl/HslAndRgbConverter.cs
@@ -3,7 +3,6 @@
 
 using System;
 using System.Runtime.CompilerServices;
-using SixLabors.ImageSharp.ColorSpaces;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HslColorSapce
 {
diff --git a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Hsv/HsvAndRgbConverter.cs b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Hsv/HsvAndRgbConverter.cs
index 6219533ca5..981b8f3abc 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Hsv/HsvAndRgbConverter.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Hsv/HsvAndRgbConverter.cs
@@ -3,7 +3,6 @@
 
 using System;
 using System.Runtime.CompilerServices;
-using SixLabors.ImageSharp.ColorSpaces;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HsvColorSapce
 {
diff --git a/src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/CieXyzAndHunterLabConverterBase.cs b/src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/CieXyzAndHunterLabConverterBase.cs
index 85b0efd16a..2d4e3b0e7a 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/CieXyzAndHunterLabConverterBase.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/CieXyzAndHunterLabConverterBase.cs
@@ -18,8 +18,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HunterLabCo
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static float ComputeKa(CieXyz whitePoint)
         {
-            DebugGuard.NotNull(whitePoint, nameof(whitePoint));
-
             if (whitePoint.Equals(Illuminants.C))
             {
                 return 175F;
diff --git a/src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/CieXyzToHunterLabConverter.cs b/src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/CieXyzToHunterLabConverter.cs
index 7faf03c9a1..3096637962 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/CieXyzToHunterLabConverter.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/CieXyzToHunterLabConverter.cs
@@ -3,7 +3,6 @@
 
 using System;
 using System.Runtime.CompilerServices;
-using SixLabors.ImageSharp.ColorSpaces;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HunterLabColorSapce
 {
diff --git a/src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/HunterLabToCieXyzConverter.cs b/src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/HunterLabToCieXyzConverter.cs
index 7e7c536e3f..228d7362b0 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/HunterLabToCieXyzConverter.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/Implementation/HunterLab/HunterLabToCieXyzConverter.cs
@@ -3,7 +3,6 @@
 
 using System;
 using System.Runtime.CompilerServices;
-using SixLabors.ImageSharp.ColorSpaces;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HunterLabColorSapce
 {
@@ -16,8 +15,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.HunterLabCo
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public CieXyz Convert(HunterLab input)
         {
-            DebugGuard.NotNull(input, nameof(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;
             float xn = input.WhitePoint.X, yn = input.WhitePoint.Y, zn = input.WhitePoint.Z;
diff --git a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Lms/CieXyzAndLmsConverter.cs b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Lms/CieXyzAndLmsConverter.cs
index 780c9e5a6e..5241b62f93 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Lms/CieXyzAndLmsConverter.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Lms/CieXyzAndLmsConverter.cs
@@ -3,7 +3,6 @@
 
 using System.Numerics;
 using System.Runtime.CompilerServices;
-using SixLabors.ImageSharp.ColorSpaces;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.LmsColorSapce
 {
@@ -63,8 +62,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.LmsColorSap
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public Lms Convert(CieXyz input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             Vector3 vector = Vector3.Transform(input.Vector, this.transformationMatrix);
             return new Lms(vector);
         }
@@ -73,8 +70,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.LmsColorSap
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public CieXyz Convert(Lms input)
         {
-            DebugGuard.NotNull(input, nameof(input));
-
             Vector3 vector = Vector3.Transform(input.Vector, this.inverseTransformationMatrix);
             return new CieXyz(vector);
         }
diff --git a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Lms/LmsAdaptationMatrix.cs b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Lms/LmsAdaptationMatrix.cs
index d535d73342..0ee93e492a 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Lms/LmsAdaptationMatrix.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Lms/LmsAdaptationMatrix.cs
@@ -25,9 +25,15 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.LmsColorSap
         public static readonly Matrix4x4 VonKriesHPEAdjusted
             = Matrix4x4.Transpose(new Matrix4x4
             {
-                M11 = 0.40024F, M12 = 0.7076F,  M13 = -0.08081F,
-                M21 = -0.2263F, M22 = 1.16532F, M23 = 0.0457F,
-                M31 = 0,        M32 = 0,        M33 = 0.91822F,
+                M11 = 0.40024F,
+                M12 = 0.7076F,
+                M13 = -0.08081F,
+                M21 = -0.2263F,
+                M22 = 1.16532F,
+                M23 = 0.0457F,
+                M31 = 0,
+                M32 = 0,
+                M33 = 0.91822F,
                 M44 = 1F // Important for inverse transforms.
             });
 
@@ -37,9 +43,15 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.LmsColorSap
         public static readonly Matrix4x4 VonKriesHPE
             = Matrix4x4.Transpose(new Matrix4x4
             {
-                M11 = 0.3897F,  M12 = 0.6890F, M13 = -0.0787F,
-                M21 = -0.2298F, M22 = 1.1834F, M23 = 0.0464F,
-                M31 = 0,        M32 = 0,       M33 = 1F,
+                M11 = 0.3897F,
+                M12 = 0.6890F,
+                M13 = -0.0787F,
+                M21 = -0.2298F,
+                M22 = 1.1834F,
+                M23 = 0.0464F,
+                M31 = 0,
+                M32 = 0,
+                M33 = 1F,
                 M44 = 1F
             });
 
@@ -54,9 +66,15 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.LmsColorSap
         public static readonly Matrix4x4 Bradford
             = Matrix4x4.Transpose(new Matrix4x4
             {
-                M11 = 0.8951F,  M12 = 0.2664F,  M13 = -0.1614F,
-                M21 = -0.7502F, M22 = 1.7135F,  M23 = 0.0367F,
-                M31 = 0.0389F,  M32 = -0.0685F, M33 = 1.0296F,
+                M11 = 0.8951F,
+                M12 = 0.2664F,
+                M13 = -0.1614F,
+                M21 = -0.7502F,
+                M22 = 1.7135F,
+                M23 = 0.0367F,
+                M31 = 0.0389F,
+                M32 = -0.0685F,
+                M33 = 1.0296F,
                 M44 = 1F
             });
 
@@ -65,35 +83,53 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.LmsColorSap
         /// </summary>
         public static readonly Matrix4x4 BradfordSharp
             = Matrix4x4.Transpose(new Matrix4x4
-             {
-                 M11 = 1.2694F,  M12 = -0.0988F,  M13 = -0.1706F,
-                 M21 = -0.8364F, M22 = 1.8006F,  M23 = 0.0357F,
-                 M31 = 0.0297F,  M32 = -0.0315F, M33 = 1.0018F,
-                 M44 = 1F
-             });
+            {
+                M11 = 1.2694F,
+                M12 = -0.0988F,
+                M13 = -0.1706F,
+                M21 = -0.8364F,
+                M22 = 1.8006F,
+                M23 = 0.0357F,
+                M31 = 0.0297F,
+                M32 = -0.0315F,
+                M33 = 1.0018F,
+                M44 = 1F
+            });
 
         /// <summary>
         /// CMCCAT2000 (fitted from all available color data sets)
         /// </summary>
         public static readonly Matrix4x4 CMCCAT2000
             = Matrix4x4.Transpose(new Matrix4x4
-             {
-                 M11 = 0.7982F,  M12 = 0.3389F, M13 = -0.1371F,
-                 M21 = -0.5918F, M22 = 1.5512F, M23 = 0.0406F,
-                 M31 = 0.0008F,  M32 = 0.239F,  M33 = 0.9753F,
-                 M44 = 1F
-             });
+            {
+                M11 = 0.7982F,
+                M12 = 0.3389F,
+                M13 = -0.1371F,
+                M21 = -0.5918F,
+                M22 = 1.5512F,
+                M23 = 0.0406F,
+                M31 = 0.0008F,
+                M32 = 0.239F,
+                M33 = 0.9753F,
+                M44 = 1F
+            });
 
         /// <summary>
         /// CAT02 (optimized for minimizing CIELAB differences)
         /// </summary>
         public static readonly Matrix4x4 CAT02
             = Matrix4x4.Transpose(new Matrix4x4
-             {
-                 M11 = 0.7328F,  M12 = 0.4296F, M13 = -0.1624F,
-                 M21 = -0.7036F, M22 = 1.6975F, M23 = 0.0061F,
-                 M31 = 0.0030F,  M32 = 0.0136F,  M33 = 0.9834F,
-                 M44 = 1F
-             });
+            {
+                M11 = 0.7328F,
+                M12 = 0.4296F,
+                M13 = -0.1624F,
+                M21 = -0.7036F,
+                M22 = 1.6975F,
+                M23 = 0.0061F,
+                M31 = 0.0030F,
+                M32 = 0.0136F,
+                M33 = 0.9834F,
+                M44 = 1F
+            });
     }
 }
\ No newline at end of file
diff --git a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/LCompanding.cs b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/LCompanding.cs
index 30cd8dc510..309ae21833 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/LCompanding.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/LCompanding.cs
@@ -32,4 +32,4 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
                 : MathF.Pow(1.16F * channel, 0.3333333F) - 0.16F;
         }
     }
-}
+}
\ No newline at end of file
diff --git a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/LinearRgbAndCieXyzConverterBase.cs b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/LinearRgbAndCieXyzConverterBase.cs
index b40a02af76..a0da2bc26e 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/LinearRgbAndCieXyzConverterBase.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/LinearRgbAndCieXyzConverterBase.cs
@@ -40,7 +40,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
             const float Yb = 1;
             float mZb = (1 - xb - yb) / yb;
 
-            Matrix4x4 xyzMatrix = new Matrix4x4
+            var xyzMatrix = new Matrix4x4
             {
                 M11 = mXr, M21 = mXg, M31 = mXb,
                 M12 = Yr,  M22 = Yg,  M32 = Yb,
@@ -48,8 +48,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
                 M44 = 1F
             };
 
-            Matrix4x4 inverseXyzMatrix;
-            Matrix4x4.Invert(xyzMatrix, out inverseXyzMatrix);
+            Matrix4x4.Invert(xyzMatrix, out Matrix4x4 inverseXyzMatrix);
 
             Vector3 vector = Vector3.Transform(workingSpace.WhitePoint.Vector, inverseXyzMatrix);
 
diff --git a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/RgbToLinearRgbConverter.cs b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/RgbToLinearRgbConverter.cs
index e40ecc192e..ed415df8c3 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/RgbToLinearRgbConverter.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/Implementation/Rgb/RgbToLinearRgbConverter.cs
@@ -13,8 +13,6 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.RgbColorSap
         /// <inheritdoc/>
         public LinearRgb Convert(Rgb input)
         {
-            Guard.NotNull(input, nameof(input));
-
             Vector3 vector = input.Vector;
             vector.X = input.WorkingSpace.Companding.Expand(vector.X);
             vector.Y = input.WorkingSpace.Companding.Expand(vector.Y);
diff --git a/src/ImageSharp/ColorSpaces/Conversion/Implementation/YCbCr/YCbCrAndRgbConverter.cs b/src/ImageSharp/ColorSpaces/Conversion/Implementation/YCbCr/YCbCrAndRgbConverter.cs
index f552acbb48..aa9668b822 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/Implementation/YCbCr/YCbCrAndRgbConverter.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/Implementation/YCbCr/YCbCrAndRgbConverter.cs
@@ -4,7 +4,6 @@
 using System;
 using System.Numerics;
 using System.Runtime.CompilerServices;
-using SixLabors.ImageSharp.ColorSpaces;
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Implementation.YCbCrColorSapce
 {
diff --git a/src/ImageSharp/ColorSpaces/Conversion/VonKriesChromaticAdaptation.cs b/src/ImageSharp/ColorSpaces/Conversion/VonKriesChromaticAdaptation.cs
index 6edae93017..dd8b1368f6 100644
--- a/src/ImageSharp/ColorSpaces/Conversion/VonKriesChromaticAdaptation.cs
+++ b/src/ImageSharp/ColorSpaces/Conversion/VonKriesChromaticAdaptation.cs
@@ -49,11 +49,7 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion
 
         /// <inheritdoc/>
         public CieXyz Transform(CieXyz sourceColor, CieXyz sourceWhitePoint, CieXyz targetWhitePoint)
-        {
-            Guard.NotNull(sourceColor, nameof(sourceColor));
-            Guard.NotNull(sourceWhitePoint, nameof(sourceWhitePoint));
-            Guard.NotNull(targetWhitePoint, nameof(targetWhitePoint));
-
+        { 
             if (sourceWhitePoint.Equals(targetWhitePoint))
             {
                 return sourceColor;