diff --git a/tests/ImageSharp.Tests/ColorProfiles/CieLabAndCieLchuvConversionTests.cs b/tests/ImageSharp.Tests/ColorProfiles/CieLabAndCieLchuvConversionTests.cs
index d7f2df95b..7bf7b4231 100644
--- a/tests/ImageSharp.Tests/ColorProfiles/CieLabAndCieLchuvConversionTests.cs
+++ b/tests/ImageSharp.Tests/ColorProfiles/CieLabAndCieLchuvConversionTests.cs
@@ -19,7 +19,7 @@ public class CieLabAndCieLchuvConversionTests
     [Theory]
     [InlineData(0, 0, 0, 0, 0, 0)]
     [InlineData(30.66194, 200, 352.7564, 31.95653, 116.8745, 2.388602)]
-    public void Convert_Lchuv_to_Lab(float l, float c, float h, float l2, float a, float b)
+    public void Convert_Lchuv_To_Lab(float l, float c, float h, float l2, float a, float b)
     {
         // Arrange
         CieLchuv input = new(l, c, h);
@@ -48,7 +48,7 @@ public class CieLabAndCieLchuvConversionTests
     [Theory]
     [InlineData(0, 0, 0, 0, 0, 0)]
     [InlineData(36.0555, 303.6901, 10.01514, 29.4713573, 200, 352.6346)]
-    public void Convert_Lab_to_Lchuv(float l, float a, float b, float l2, float c, float h)
+    public void Convert_Lab_To_Lchuv(float l, float a, float b, float l2, float c, float h)
     {
         // Arrange
         CieLab input = new(l, a, b);
diff --git a/tests/ImageSharp.Tests/ColorProfiles/CieLabAndCieLuvConversionTests.cs b/tests/ImageSharp.Tests/ColorProfiles/CieLabAndCieLuvConversionTests.cs
index 17df78bdf..fb9f25bd8 100644
--- a/tests/ImageSharp.Tests/ColorProfiles/CieLabAndCieLuvConversionTests.cs
+++ b/tests/ImageSharp.Tests/ColorProfiles/CieLabAndCieLuvConversionTests.cs
@@ -19,7 +19,7 @@ public class CieLabAndCieLuvConversionTests
     [Theory]
     [InlineData(0, 0, 0, 0, 0, 0)]
     [InlineData(10, 36.0555, 303.6901, 10.6006718, -17.24077, 82.8835)]
-    public void Convert_CieLuv_to_CieLab(float l, float u, float v, float l2, float a, float b)
+    public void Convert_CieLuv_To_CieLab(float l, float u, float v, float l2, float a, float b)
     {
         // Arrange
         CieLuv input = new(l, u, v);
@@ -48,7 +48,7 @@ public class CieLabAndCieLuvConversionTests
     [Theory]
     [InlineData(0, 0, 0, 0, 0, 0)]
     [InlineData(10.0151367, -23.9644356, 17.0226, 10.0000038, -12.830183, 15.1829338)]
-    public void Convert_CieLab_to_CieLuv(float l, float a, float b, float l2, float u, float v)
+    public void Convert_CieLab_To_CieLuv(float l, float a, float b, float l2, float u, float v)
     {
         // Arrange
         CieLab input = new(l, a, b);
diff --git a/tests/ImageSharp.Tests/ColorProfiles/CieLabAndCieXyyConversionTests.cs b/tests/ImageSharp.Tests/ColorProfiles/CieLabAndCieXyyConversionTests.cs
new file mode 100644
index 000000000..074173da5
--- /dev/null
+++ b/tests/ImageSharp.Tests/ColorProfiles/CieLabAndCieXyyConversionTests.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="CieLab"/>-<see cref="CieXyy"/> conversions.
+/// </summary>
+public class CieLabAndCieXyyConversionTests
+{
+    private static readonly ApproximateColorProfileComparer Comparer = new(.0002F);
+
+    [Theory]
+    [InlineData(0, 0, 0, 0, 0, 0)]
+    [InlineData(0.8644734, 0.06098868, 0.06509002, 30.6619, 291.5721, -11.2526)]
+    public void Convert_CieXyy_To_CieLab(float x, float y, float yl, float l, float a, float b)
+    {
+        // Arrange
+        CieXyy input = new(x, y, yl);
+        CieLab expected = new(l, a, b);
+        ColorProfileConverter converter = new();
+
+        Span<CieXyy> inputSpan = new CieXyy[5];
+        inputSpan.Fill(input);
+
+        Span<CieLab> actualSpan = new CieLab[5];
+
+        // Act
+        CieLab actual = converter.Convert<CieXyy, CieLab>(input);
+        converter.Convert<CieXyy, CieLab>(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(30.6619, 291.5721, -11.2526, 0.8644734, 0.06098868, 0.06509002)]
+    public void Convert_CieLab_To_CieXyy(float l, float a, float b, float x, float y, float yl)
+    {
+        // Arrange
+        CieLab input = new(l, a, b);
+        CieXyy expected = new(x, y, yl);
+        ColorProfileConverter converter = new();
+
+        Span<CieLab> inputSpan = new CieLab[5];
+        inputSpan.Fill(input);
+
+        Span<CieXyy> actualSpan = new CieXyy[5];
+
+        // Act
+        CieXyy actual = converter.Convert<CieLab, CieXyy>(input);
+        converter.Convert<CieLab, CieXyy>(inputSpan, actualSpan);
+
+        // Assert
+        Assert.Equal(expected, actual, Comparer);
+
+        for (int i = 0; i < actualSpan.Length; i++)
+        {
+            Assert.Equal(expected, actualSpan[i], Comparer);
+        }
+    }
+}