diff --git a/tests/ImageSharp.Tests/ColorProfiles/CieXyyAndHunterLabConversionTests.cs b/tests/ImageSharp.Tests/ColorProfiles/CieXyyAndHunterLabConversionTests.cs
new file mode 100644
index 0000000000..a3b7d4b0f1
--- /dev/null
+++ b/tests/ImageSharp.Tests/ColorProfiles/CieXyyAndHunterLabConversionTests.cs
@@ -0,0 +1,70 @@
+// Copyright (c) Six Labors.
+// Licensed under the Six Labors Split License.
+
+using SixLabors.ImageSharp.ColorProfiles;
+
+namespace SixLabors.ImageSharp.Tests.ColorProfiles;
+
+/// <summary>
+/// Tests <see cref="CieXyy"/>-<see cref="HunterLab"/> conversions.
+/// </summary>
+public class CieXyyAndHunterLabConversionTests
+{
+    private static readonly ApproximateColorProfileComparer Comparer = new(.0002f);
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 0, 0)]
+    [InlineData(0.360555, 0.936901, 0.1001514, 31.6467056, -33.00599, 25.67032)]
+    public void Convert_CieXyy_to_HunterLab(float x, float y, float yl, float l, float a, float b)
+    {
+        // Arrange
+        CieXyy input = new(x, y, yl);
+        HunterLab expected = new(l, a, b);
+        ColorProfileConverter converter = new();
+
+        Span<CieXyy> inputSpan = new CieXyy[5];
+        inputSpan.Fill(input);
+
+        Span<HunterLab> actualSpan = new HunterLab[5];
+
+        // Act
+        HunterLab actual = converter.Convert<CieXyy, HunterLab>(input);
+        converter.Convert<CieXyy, HunterLab>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 0, 0)]
+    [InlineData(31.6467056, -33.00599, 25.67032, 0.360555, 0.936901, 0.1001514)]
+    public void Convert_HunterLab_to_CieXyy(float l, float a, float b, float x, float y, float yl)
+    {
+        // Arrange
+        HunterLab input = new(l, a, b);
+        CieXyy expected = new(x, y, yl);
+        ColorProfileConverter converter = new();
+
+        Span<HunterLab> inputSpan = new HunterLab[5];
+        inputSpan.Fill(input);
+
+        Span<CieXyy> actualSpan = new CieXyy[5];
+
+        // Act
+        CieXyy actual = converter.Convert<HunterLab, CieXyy>(input);
+        converter.Convert<HunterLab, CieXyy>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+}
diff --git a/tests/ImageSharp.Tests/ColorProfiles/CieXyyAndLmsConversionTests.cs b/tests/ImageSharp.Tests/ColorProfiles/CieXyyAndLmsConversionTests.cs
new file mode 100644
index 0000000000..6974a864fb
--- /dev/null
+++ b/tests/ImageSharp.Tests/ColorProfiles/CieXyyAndLmsConversionTests.cs
@@ -0,0 +1,70 @@
+// Copyright (c) Six Labors.
+// Licensed under the Six Labors Split License.
+
+using SixLabors.ImageSharp.ColorProfiles;
+
+namespace SixLabors.ImageSharp.Tests.ColorProfiles.Conversion;
+
+/// <summary>
+/// Tests <see cref="CieXyy"/>-<see cref="Lms"/> conversions.
+/// </summary>
+public class CieXyyAndLmsConversionTests
+{
+    private static readonly ApproximateColorProfileComparer Comparer = new(.0002f);
+
+    [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
+        CieXyy input = new(x, y, yl);
+        Lms expected = new(l, m, s);
+        ColorProfileConverter converter = new();
+
+        Span<CieXyy> inputSpan = new CieXyy[5];
+        inputSpan.Fill(input);
+
+        Span<Lms> actualSpan = new Lms[5];
+
+        // Act
+        Lms actual = converter.Convert<CieXyy, Lms>(input);
+        converter.Convert<CieXyy, Lms>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 0, 0)]
+    [InlineData(0.06631134, 0.1415282, -0.03809926, 0.360555, 0.936901, 0.1001514)]
+    public void Convert_Lms_to_CieXyy(float l, float m, float s, float x, float y, float yl)
+    {
+        // Arrange
+        Lms input = new(l, m, s);
+        CieXyy expected = new(x, y, yl);
+        ColorProfileConverter converter = new();
+
+        Span<Lms> inputSpan = new Lms[5];
+        inputSpan.Fill(input);
+
+        Span<CieXyy> actualSpan = new CieXyy[5];
+
+        // Act
+        CieXyy actual = converter.Convert<Lms, CieXyy>(input);
+        converter.Convert<Lms, CieXyy>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+}
diff --git a/tests/ImageSharp.Tests/ColorProfiles/CieXyyAndRgbConversionTests.cs b/tests/ImageSharp.Tests/ColorProfiles/CieXyyAndRgbConversionTests.cs
new file mode 100644
index 0000000000..18df2ce145
--- /dev/null
+++ b/tests/ImageSharp.Tests/ColorProfiles/CieXyyAndRgbConversionTests.cs
@@ -0,0 +1,70 @@
+// Copyright (c) Six Labors.
+// Licensed under the Six Labors Split License.
+
+using SixLabors.ImageSharp.ColorProfiles;
+
+namespace SixLabors.ImageSharp.Tests.ColorProfiles;
+
+/// <summary>
+/// Tests <see cref="CieXyy"/>-<see cref="Rgb"/> conversions.
+/// </summary>
+public class CieXyyAndRgbConversionTests
+{
+    private static readonly ApproximateColorProfileComparer Comparer = new(.0002f);
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 0, 0)]
+    [InlineData(0.360555, 0.936901, 0.1001514, 0, 0.4277014, 0)]
+    public void Convert_CieXyy_to_Rgb(float x, float y, float yl, float r, float g, float b)
+    {
+        // Arrange
+        CieXyy input = new(x, y, yl);
+        Rgb expected = new(r, g, b);
+        ColorProfileConverter converter = new();
+
+        Span<CieXyy> inputSpan = new CieXyy[5];
+        inputSpan.Fill(input);
+
+        Span<Rgb> actualSpan = new Rgb[5];
+
+        // Act
+        Rgb actual = converter.Convert<CieXyy, Rgb>(input);
+        converter.Convert<CieXyy, Rgb>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 0, 0)]
+    [InlineData(0, 0.4277014, 0, 0.32114, 0.59787, 0.10976)]
+    public void Convert_Rgb_to_CieXyy(float r, float g, float b, float x, float y, float yl)
+    {
+        // Arrange
+        Rgb input = new(r, g, b);
+        CieXyy expected = new(x, y, yl);
+        ColorProfileConverter converter = new();
+
+        Span<Rgb> inputSpan = new Rgb[5];
+        inputSpan.Fill(input);
+
+        Span<CieXyy> actualSpan = new CieXyy[5];
+
+        // Act
+        CieXyy actual = converter.Convert<Rgb, CieXyy>(input);
+        converter.Convert<Rgb, CieXyy>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+}
diff --git a/tests/ImageSharp.Tests/ColorProfiles/CieXyyAndYCbCrConversionTests.cs b/tests/ImageSharp.Tests/ColorProfiles/CieXyyAndYCbCrConversionTests.cs
new file mode 100644
index 0000000000..1fe3596036
--- /dev/null
+++ b/tests/ImageSharp.Tests/ColorProfiles/CieXyyAndYCbCrConversionTests.cs
@@ -0,0 +1,70 @@
+// Copyright (c) Six Labors.
+// Licensed under the Six Labors Split License.
+
+using SixLabors.ImageSharp.ColorProfiles;
+
+namespace SixLabors.ImageSharp.Tests.ColorProfiles;
+
+/// <summary>
+/// Tests <see cref="CieXyy"/>-<see cref="YCbCr"/> conversions.
+/// </summary>
+public class CieXyyAndYCbCrConversionTests
+{
+    private static readonly ApproximateColorProfileComparer Comparer = new(.0002f);
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 128, 128)]
+    [InlineData(0.360555, 0.936901, 0.1001514, 64.0204849, 91.87107, 82.33627)]
+    public void Convert_CieXyy_to_YCbCr(float x, float y, float yl, float y2, float cb, float cr)
+    {
+        // Arrange
+        CieXyy input = new(x, y, yl);
+        YCbCr expected = new(y2, cb, cr);
+        ColorProfileConverter converter = new();
+
+        Span<CieXyy> inputSpan = new CieXyy[5];
+        inputSpan.Fill(input);
+
+        Span<YCbCr> actualSpan = new YCbCr[5];
+
+        // Act
+        YCbCr actual = converter.Convert<CieXyy, YCbCr>(input);
+        converter.Convert<CieXyy, YCbCr>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+
+    [Theory]
+    [InlineData(0, 128, 128, 0, 0, 0)]
+    [InlineData(64.0204849, 91.87107, 82.33627, 0.32114, 0.59787, 0.10976)]
+    public void Convert_YCbCr_to_CieXyy(float y2, float cb, float cr, float x, float y, float yl)
+    {
+        // Arrange
+        YCbCr input = new(y2, cb, cr);
+        CieXyy expected = new(x, y, yl);
+        ColorProfileConverter converter = new();
+
+        Span<YCbCr> inputSpan = new YCbCr[5];
+        inputSpan.Fill(input);
+
+        Span<CieXyy> actualSpan = new CieXyy[5];
+
+        // Act
+        CieXyy actual = converter.Convert<YCbCr, CieXyy>(input);
+        converter.Convert<YCbCr, CieXyy>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+}