diff --git a/src/Nri/Ui/Colors/Extra.elm b/src/Nri/Ui/Colors/Extra.elm
index 5b4163da..3416f7f3 100644
--- a/src/Nri/Ui/Colors/Extra.elm
+++ b/src/Nri/Ui/Colors/Extra.elm
@@ -18,7 +18,11 @@ toCoreColor (Css.hex "#FFFFFF") -- "RGBA 255 255 255 1 : Color.Color"
 -}
 toCoreColor : Css.Color -> Color.Color
 toCoreColor cssColor =
-    Color.rgba (toFloat cssColor.red) (toFloat cssColor.green) (toFloat cssColor.blue) cssColor.alpha
+    Color.rgba
+        (toFloat cssColor.red / 255)
+        (toFloat cssColor.green / 255)
+        (toFloat cssColor.blue / 255)
+        cssColor.alpha
 
 
 {-| Add an alpha property to a Css.Color