diff --git a/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndHslConversionTests.cs b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndHslConversionTests.cs
new file mode 100644
index 0000000000..fb415f43ba
--- /dev/null
+++ b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndHslConversionTests.cs
@@ -0,0 +1,80 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using System;
+using SixLabors.ImageSharp.ColorSpaces;
+using SixLabors.ImageSharp.ColorSpaces.Conversion;
+using Xunit;
+
+namespace SixLabors.ImageSharp.Tests.Colorspaces.Conversion
+{
+ ///
+ /// Tests - conversions.
+ ///
+ public class CieXyyAndHslConversionTests
+ {
+ private static readonly ApproximateColorSpaceComparer ColorSpaceComparer = new ApproximateColorSpaceComparer(.0002F);
+ private static readonly ColorSpaceConverter Converter = new ColorSpaceConverter();
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 0, 0, 0, 0, 0)]
+ [InlineData(0.360555, 0.936901, 0.1001514, 120, 1, 0.211263)]
+ public void Convert_CieXyy_to_Hsl(float x, float y, float yl, float h, float s, float l)
+ {
+ // Arrange
+ var input = new CieXyy(x, y, yl);
+ var expected = new Hsl(h, s, l);
+
+ Span inputSpan = new CieXyy[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new Hsl[5];
+
+ // Act
+ var actual = Converter.ToHsl(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 0, 0, 0, 0, 0)]
+ [InlineData(120, 1, 0.211263, 0.3, 0.6, 0.1067051)]
+ public void Convert_Hsl_to_CieXyy(float h, float s, float l, float x, float y, float yl)
+ {
+ // Arrange
+ var input = new Hsl(h, s, l);
+ var expected = new CieXyy(x, y, yl);
+
+ Span inputSpan = new Hsl[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new CieXyy[5];
+
+ // Act
+ var actual = Converter.ToCieXyy(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+ }
+}
\ No newline at end of file
diff --git a/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndHsvConversionTests.cs b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndHsvConversionTests.cs
new file mode 100644
index 0000000000..3c8aee807a
--- /dev/null
+++ b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndHsvConversionTests.cs
@@ -0,0 +1,80 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using System;
+using SixLabors.ImageSharp.ColorSpaces;
+using SixLabors.ImageSharp.ColorSpaces.Conversion;
+using Xunit;
+
+namespace SixLabors.ImageSharp.Tests.Colorspaces.Conversion
+{
+ ///
+ /// Tests - conversions.
+ ///
+ public class CieXyyAndHsvConversionTests
+ {
+ private static readonly ApproximateColorSpaceComparer ColorSpaceComparer = new ApproximateColorSpaceComparer(.0002F);
+ private static readonly ColorSpaceConverter Converter = new ColorSpaceConverter();
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 0, 0, 0, 0, 0)]
+ [InlineData(0.360555, 0.936901, 0.1001514, 120, 1, 0.4225259)]
+ public void Convert_CieXyy_to_Hsv(float x, float y, float yl, float h, float s, float v)
+ {
+ // Arrange
+ var input = new CieXyy(x, y, yl);
+ var expected = new Hsv(h, s, v);
+
+ Span inputSpan = new CieXyy[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new Hsv[5];
+
+ // Act
+ var actual = Converter.ToHsv(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 0, 0, 0, 0, 0)]
+ [InlineData(120, 1, 0.4225259, 0.3, 0.6, 0.1067051)]
+ public void Convert_Hsv_to_CieXyy(float h, float s, float v, float x, float y, float yl)
+ {
+ // Arrange
+ var input = new Hsv(h, s, v);
+ var expected = new CieXyy(x, y, yl);
+
+ Span inputSpan = new Hsv[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new CieXyy[5];
+
+ // Act
+ var actual = Converter.ToCieXyy(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+ }
+}
\ No newline at end of file
diff --git a/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndHunterLabConversionTests.cs b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndHunterLabConversionTests.cs
new file mode 100644
index 0000000000..1fcbb75cb2
--- /dev/null
+++ b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndHunterLabConversionTests.cs
@@ -0,0 +1,80 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using System;
+using SixLabors.ImageSharp.ColorSpaces;
+using SixLabors.ImageSharp.ColorSpaces.Conversion;
+using Xunit;
+
+namespace SixLabors.ImageSharp.Tests.Colorspaces.Conversion
+{
+ ///
+ /// Tests - conversions.
+ ///
+ public class CieXyyAndHunterLabConversionTests
+ {
+ private static readonly ApproximateColorSpaceComparer ColorSpaceComparer = new ApproximateColorSpaceComparer(.0002F);
+ private static readonly ColorSpaceConverter Converter = new ColorSpaceConverter();
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 0, 0, 0, 0, 0)]
+ [InlineData(0.360555, 0.936901, 0.1001514, 31.46263, -32.81796, 28.64938)]
+ public void Convert_CieXyy_to_HunterLab(float x, float y, float yl, float l, float a, float b)
+ {
+ // Arrange
+ var input = new CieXyy(x, y, yl);
+ var expected = new HunterLab(l, a, b);
+
+ Span inputSpan = new CieXyy[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new HunterLab[5];
+
+ // Act
+ var actual = Converter.ToHunterLab(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 0, 0, 0, 0, 0)]
+ [InlineData(31.46263, -32.81796, 28.64938, 0.3605552, 0.9369011, 0.1001514)]
+ public void Convert_HunterLab_to_CieXyy(float l, float a, float b, float x, float y, float yl)
+ {
+ // Arrange
+ var input = new HunterLab(l, a, b);
+ var expected = new CieXyy(x, y, yl);
+
+ Span inputSpan = new HunterLab[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new CieXyy[5];
+
+ // Act
+ var actual = Converter.ToCieXyy(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+ }
+}
\ No newline at end of file
diff --git a/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndLinearRgbConversionTests.cs b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndLinearRgbConversionTests.cs
new file mode 100644
index 0000000000..8c45378ed4
--- /dev/null
+++ b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndLinearRgbConversionTests.cs
@@ -0,0 +1,80 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using System;
+using SixLabors.ImageSharp.ColorSpaces;
+using SixLabors.ImageSharp.ColorSpaces.Conversion;
+using Xunit;
+
+namespace SixLabors.ImageSharp.Tests.Colorspaces.Conversion
+{
+ ///
+ /// Tests - conversions.
+ ///
+ public class CieXyyAndLinearRgbConversionTests
+ {
+ private static readonly ApproximateColorSpaceComparer ColorSpaceComparer = new ApproximateColorSpaceComparer(.0002F);
+ private static readonly ColorSpaceConverter Converter = new ColorSpaceConverter();
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 0, 0, 0, 0, 0)]
+ [InlineData(0.360555, 0.936901, 0.1001514, 0, 0.1492062, 0)]
+ public void Convert_CieXyy_to_LinearRgb(float x, float y, float yl, float r, float g, float b)
+ {
+ // Arrange
+ var input = new CieXyy(x, y, yl);
+ var expected = new LinearRgb(r, g, b);
+
+ Span inputSpan = new CieXyy[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new LinearRgb[5];
+
+ // Act
+ var actual = Converter.ToLinearRgb(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 0, 0, 0, 0, 0)]
+ [InlineData(0, 0.1492062, 0, 0.3, 0.6, 0.1067051)]
+ public void Convert_LinearRgb_to_CieXyy(float r, float g, float b, float x, float y, float yl)
+ {
+ // Arrange
+ var input = new LinearRgb(r, g, b);
+ var expected = new CieXyy(x, y, yl);
+
+ Span inputSpan = new LinearRgb[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new CieXyy[5];
+
+ // Act
+ var actual = Converter.ToCieXyy(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+ }
+}
\ No newline at end of file
diff --git a/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndLmsConversionTests.cs b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndLmsConversionTests.cs
new file mode 100644
index 0000000000..67ec26f6d4
--- /dev/null
+++ b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndLmsConversionTests.cs
@@ -0,0 +1,80 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using System;
+using SixLabors.ImageSharp.ColorSpaces;
+using SixLabors.ImageSharp.ColorSpaces.Conversion;
+using Xunit;
+
+namespace SixLabors.ImageSharp.Tests.Colorspaces.Conversion
+{
+ ///
+ /// Tests - conversions.
+ ///
+ public class CieXyyAndLmsConversionTests
+ {
+ private static readonly ApproximateColorSpaceComparer ColorSpaceComparer = new ApproximateColorSpaceComparer(.0002F);
+ private static readonly ColorSpaceConverter Converter = new ColorSpaceConverter();
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 0, 0, 0, 0, 0)]
+ [InlineData(0.360555, 0.936901, 0.1001514, 0.06631134, 0.1415282, -0.03809926)]
+ public void Convert_CieXyy_to_Lms(float x, float y, float yl, float l, float m, float s)
+ {
+ // Arrange
+ var input = new CieXyy(x, y, yl);
+ var expected = new Lms(l, m, s);
+
+ Span inputSpan = new CieXyy[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new Lms[5];
+
+ // Act
+ var actual = Converter.ToLms(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 0, 0, 0, 0, 0)]
+ [InlineData(0.06631134, 0.1415282, -0.03809926, 0.360555, 0.9369009, 0.1001514)]
+ public void Convert_Lms_to_CieXyy(float l, float m, float s, float x, float y, float yl)
+ {
+ // Arrange
+ var input = new Lms(l, m, s);
+ var expected = new CieXyy(x, y, yl);
+
+ Span inputSpan = new Lms[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new CieXyy[5];
+
+ // Act
+ var actual = Converter.ToCieXyy(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+ }
+}
\ No newline at end of file
diff --git a/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndRgbConversionTests.cs b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndRgbConversionTests.cs
new file mode 100644
index 0000000000..e309e2d555
--- /dev/null
+++ b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndRgbConversionTests.cs
@@ -0,0 +1,80 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using System;
+using SixLabors.ImageSharp.ColorSpaces;
+using SixLabors.ImageSharp.ColorSpaces.Conversion;
+using Xunit;
+
+namespace SixLabors.ImageSharp.Tests.Colorspaces.Conversion
+{
+ ///
+ /// Tests - conversions.
+ ///
+ public class CieXyyAndRgbConversionTests
+ {
+ private static readonly ApproximateColorSpaceComparer ColorSpaceComparer = new ApproximateColorSpaceComparer(.0002F);
+ private static readonly ColorSpaceConverter Converter = new ColorSpaceConverter();
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 0, 0, 0, 0, 0)]
+ [InlineData(0.360555, 0.936901, 0.1001514, 0, 0.4225259, 0)]
+ public void Convert_CieXyy_to_Rgb(float x, float y, float yl, float r, float g, float b)
+ {
+ // Arrange
+ var input = new CieXyy(x, y, yl);
+ var expected = new Rgb(r, g, b);
+
+ Span inputSpan = new CieXyy[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new Rgb[5];
+
+ // Act
+ var actual = Converter.ToRgb(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 0, 0, 0, 0, 0)]
+ [InlineData(0, 0.4225259, 0, 0.3, 0.6, 0.1067051)]
+ public void Convert_Rgb_to_CieXyy(float r, float g, float b, float x, float y, float yl)
+ {
+ // Arrange
+ var input = new Rgb(r, g, b);
+ var expected = new CieXyy(x, y, yl);
+
+ Span inputSpan = new Rgb[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new CieXyy[5];
+
+ // Act
+ var actual = Converter.ToCieXyy(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+ }
+}
\ No newline at end of file
diff --git a/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndYCbCrConversionTests.cs b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndYCbCrConversionTests.cs
new file mode 100644
index 0000000000..3e33f05192
--- /dev/null
+++ b/tests/ImageSharp.Tests/Colorspaces/Conversion/CieXyyAndYCbCrConversionTests.cs
@@ -0,0 +1,80 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using System;
+using SixLabors.ImageSharp.ColorSpaces;
+using SixLabors.ImageSharp.ColorSpaces.Conversion;
+using Xunit;
+
+namespace SixLabors.ImageSharp.Tests.Colorspaces.Conversion
+{
+ ///
+ /// Tests - conversions.
+ ///
+ public class CieXyyAndYCbCrConversionTests
+ {
+ private static readonly ApproximateColorSpaceComparer ColorSpaceComparer = new ApproximateColorSpaceComparer(.0002F);
+ private static readonly ColorSpaceConverter Converter = new ColorSpaceConverter();
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 0, 0, 0, 128, 128)]
+ [InlineData(0.360555, 0.936901, 0.1001514, 63.24579, 92.30826, 82.88884)]
+ public void Convert_CieXyy_to_YCbCr(float x, float y, float yl, float y2, float cb, float cr)
+ {
+ // Arrange
+ var input = new CieXyy(x, y, yl);
+ var expected = new YCbCr(y2, cb, cr);
+
+ Span inputSpan = new CieXyy[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new YCbCr[5];
+
+ // Act
+ var actual = Converter.ToYCbCr(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+
+ ///
+ /// Tests conversion from to .
+ ///
+ [Theory]
+ [InlineData(0, 128, 128, 0, 0, 0)]
+ [InlineData(63.24579, 92.30826, 82.88884, 0.3, 0.6, 0.1072441)]
+ public void Convert_YCbCr_to_CieXyy(float y2, float cb, float cr, float x, float y, float yl)
+ {
+ // Arrange
+ var input = new YCbCr(y2, cb, cr);
+ var expected = new CieXyy(x, y, yl);
+
+ Span inputSpan = new YCbCr[5];
+ inputSpan.Fill(input);
+
+ Span actualSpan = new CieXyy[5];
+
+ // Act
+ var actual = Converter.ToCieXyy(input);
+ Converter.Convert(inputSpan, actualSpan, actualSpan.Length);
+
+ // Assert
+ Assert.Equal(expected, actual, ColorSpaceComparer);
+
+
+ for (int i = 0; i < actualSpan.Length; i++)
+ {
+ Assert.Equal(expected, actualSpan[i], ColorSpaceComparer);
+ }
+ }
+ }
+}
\ No newline at end of file