diff --git a/tests/ImageSharp.Tests/Colors/ColorEqualityTests.cs b/tests/ImageSharp.Tests/Colors/ColorEqualityTests.cs
index 3209912ba6..98f75c1ba1 100644
--- a/tests/ImageSharp.Tests/Colors/ColorEqualityTests.cs
+++ b/tests/ImageSharp.Tests/Colors/ColorEqualityTests.cs
@@ -191,11 +191,25 @@ namespace ImageSharp.Tests.Colors
                 { new CieLab(0f, 0f, 0f), new CieLab(0f, .001f, 0f), typeof(CieLab), .001f },
                 { new CieLab(0f, 0f, 0f), new CieLab(0f, 0f, .0001f), typeof(CieLab), .0001f },
                 { new CieLab(0f, 0f, 0f), new CieLab(.0005f, 0f, 0f), typeof(CieLab), .0005f },
-                //{ new CieXyz(380f, 380f, 380f), null, typeof(CieXyz) },
-                //{ new Cmyk(0f, 0f, 0f, 0f), null, typeof(Cmyk) },
-                //{ new Hsl(0f, 0f, 0f), null, typeof(Hsl) },
-                //{ new Hsv(360f, 1f, 1f), null, typeof(Hsv) },
-                //{ new YCbCr(0, 0, 0), null, typeof(YCbCr) },
+                { new CieXyz(380f, 380f, 380f), new CieXyz(380f, 380f, 380f), typeof(CieXyz), 0f },
+                { new CieXyz(380f, 380f, 380f), new CieXyz(380.001f, 380f, 380f), typeof(CieXyz), .01f },
+                { new CieXyz(380f, 380f, 380f), new CieXyz(380f, 380.001f, 380f), typeof(CieXyz), .01f },
+                { new CieXyz(380f, 380f, 380f), new CieXyz(380f, 380f, 380.001f), typeof(CieXyz), .01f },
+                { new Cmyk(0f, 0f, 0f, 0f), new Cmyk(0f, 0f, 0f, 0f), typeof(Cmyk), 0f },
+                { new Cmyk(0f, 0f, 0f, 0f), new Cmyk(0.001f, 0f, 0f, 0f), typeof(Cmyk), .01f },
+                { new Cmyk(0f, 0f, 0f, 0f), new Cmyk(0f, 0.001f, 0f, 0f), typeof(Cmyk), .01f },
+                { new Cmyk(0f, 0f, 0f, 0f), new Cmyk(0f, 0f, 0.001f, 0f), typeof(Cmyk), .01f },
+                { new Cmyk(0f, 0f, 0f, 0f), new Cmyk(0f, 0f, 0f, 0.001f), typeof(Cmyk), .01f },
+                { new Hsl(0f, 0f, 0f), new Hsl(0f, 0f, 0f), typeof(Hsl), 0f },
+                { new Hsl(0f, 0f, 0f), new Hsl(0.001f, 0f, 0f), typeof(Hsl), .01f },
+                { new Hsl(0f, 0f, 0f), new Hsl(0f, 0.001f, 0f), typeof(Hsl), .01f },
+                { new Hsl(0f, 0f, 0f), new Hsl(0f, 0f, 0.001f), typeof(Hsl), .01f },
+                { new Hsv(360f, 1f, 1f), new Hsv(360f, 1f, 1f), typeof(Hsv), 0f },
+                { new Hsv(0f, 0f, 0f), new Hsv(0f, 0f, 0f), typeof(Hsv), 0f },
+                { new Hsv(0f, 0f, 0f), new Hsv(0.001f, 0f, 0f), typeof(Hsv), .01f },
+                { new Hsv(0f, 0f, 0f), new Hsv(0f, 0.001f, 0f), typeof(Hsv), .01f },
+                { new Hsv(0f, 0f, 0f), new Hsv(0f, 0f, 0.001f), typeof(Hsv), .01f },
+                { new YCbCr(0, 0, 0), new YCbCr(0, 0, 0), typeof(YCbCr), 0f },
             };
 
         [Theory]