diff --git a/src/pixie/blends.nim b/src/pixie/blends.nim
index 3037594..e99aead 100644
--- a/src/pixie/blends.nim
+++ b/src/pixie/blends.nim
@@ -57,6 +57,22 @@ proc hardLightPremultiplied(backdrop, source: uint32): uint8 {.inline.} =
 proc blendAlpha(backdrop, source: uint8): uint8 {.inline.} =
   source + ((backdrop.uint32 * (255 - source)) div 255).uint8
 
+proc tripleBlend(result: var ColorRGBA, backdrop, source: ColorRGBA) =
+  result.a = blendAlpha(backdrop.a, source.a)
+  if result.a == 0:
+    result = rgba(0, 0, 0, 0)
+  else:
+    let
+      t0 = (255 - backdrop.a.uint32) * source.a.uint32
+      t1 = (255 - source.a.uint32) * backdrop.a.uint32
+      t2 = 255.uint32 * 255
+      r = t0 * source.r + t1 * backdrop.r + t2 * result.r
+      g = t0 * source.g + t1 * backdrop.g + t2 * result.g
+      b = t0 * source.b + t1 * backdrop.b + t2 * result.b
+    result.r = (r div 255 div result.a).uint8
+    result.g = (g div 255 div result.a).uint8
+    result.b = (b div 255 div result.a).uint8
+
 proc blendNormalPremultiplied*(backdrop, source: ColorRGBA): ColorRGBA {.inline.} =
   if backdrop.a == 0:
     return source
@@ -75,13 +91,13 @@ proc blendDarkenPremultiplied(backdrop, source: ColorRGBA): ColorRGBA =
   result.r = min(backdrop.r, source.r)
   result.g = min(backdrop.g, source.g)
   result.b = min(backdrop.b, source.b)
-  result.a = blendAlpha(backdrop.a, source.a)
+  result.tripleBlend(backdrop, source)
 
 proc blendMultiplyPremultiplied(backdrop, source: ColorRGBA): ColorRGBA =
   result.r = ((backdrop.r.uint32 * source.r) div 255).uint8
   result.g = ((backdrop.g.uint32 * source.g) div 255).uint8
   result.b = ((backdrop.b.uint32 * source.b) div 255).uint8
-  result.a = blendAlpha(backdrop.a, source.a)
+  result.tripleBlend(backdrop, source)
 
 proc blendLinearBurnPremultiplied(backdrop, source: ColorRGBA): ColorRGBA =
   result.r = min(0, backdrop.r.uint32 + source.r.uint32 - 255).uint8
@@ -106,7 +122,7 @@ proc blendColorBurnPremultiplied(backdrop, source: ColorRGBA): ColorRGBA =
   result.r = blend(backdrop.r, source.r)
   result.g = blend(backdrop.g, source.g)
   result.b = blend(backdrop.b, source.b)
-  result.a = blendAlpha(backdrop.a, source.a)
+  result.tripleBlend(backdrop, source)
 
 proc blendScreenPremultiplied(backdrop, source: ColorRGBA): ColorRGBA =
   result.r = screenPremultiplied(backdrop.r, source.r)