diff --git a/RgbColor-object-API.md b/RgbColor-object-API.md
index 3604056..a532d09 100644
--- a/RgbColor-object-API.md
+++ b/RgbColor-object-API.md
@@ -72,6 +72,19 @@ Lighten will adjust the color by the given delta toward white.
 NOTE: This is a simple linear change.  
 > * _delta_ - (0-255) the amount to lighten the color by.
 
+### int16_t CompareTo(const RgbColor& other, uint8_t epsilon = 1)
+Compares against another color with the given epsilon.  
+Returns the greatest difference of a set of elements, where 0 means the colors are equal within epsilon delta, negative means this is less than the other, positive means this is greater than the other.  
+> * _other_ - the color to compare against.  
+> * _epsilon_ - the max delta acceptable for them to be considered the same color.   
+
+### static int16_t Compare(const RgbColor& left, const RgbColor& right, uint8_t epsilon = 1)
+Compares two colors with the given epsilon.  
+Returns the greatest difference of a set of elements, where 0 means the colors are equal within epsilon delta, negative means left is less than the right, positive means left is greater than the right.  
+> * _left_ - the first color to compare.  
+> * _right_ - the other color to compare.     
+> * _epsilon_ - the max delta acceptable for them to be considered the same color.     
+
 ### static RgbColor LinearBlend(RgbColor left, RgbColor right, float progress);
 This will blend between two colors by the amount defined by the progress variable.  
 > * _left_ - the color to start the blend at.