diff --git a/css-color-4/Overview.bs b/css-color-4/Overview.bs
index cc0418166c5..4e5d4aa9f50 100644
--- a/css-color-4/Overview.bs
+++ b/css-color-4/Overview.bs
@@ -1221,6 +1221,13 @@ Parsing a <<color>> Value</h3>
 	4. Return |used color|.
 </div>
 
+Note: This algorithm is not intented 
+to parse a CSS <<color>> value 
+specified in a CSS stylesheet
+or with a CSSOM interface,
+but in other places 
+like HTML attributes or Canvas interfaces.
+