diff --git a/RgbwColor-object-API.md b/RgbwColor-object-API.md
index 1d02e7e..a50db35 100644
--- a/RgbwColor-object-API.md
+++ b/RgbwColor-object-API.md
@@ -56,4 +56,11 @@ This is a static function, which means you need to call it scoped to the object
 ```
     RgbwColor results = RgbwColor::LinearBlend(RgbwColor(255,0,0,0), RgbwColor(0,255,0,10), 0.33f);
 ```
-
+### static RgbwColor BilinearBlend(RgbwColor c00, RgbwColor c01, RgbwColor c10, RgbwColor c11, float x, float y);  
+This will blend between four colors by the amount defined by 2d weighting values.  
+c00 - upper left quadrant color  
+c01 - upper right quadrant color  
+c10 - lower left quadrant color  
+c11 - lower right quadrant color  
+x - unit value (0.0 - 1.0) that defines the blend progress in horizontal space  
+y - unit value (0.0 - 1.0) that defines the blend progress in vertical space