diff --git a/readme.md b/readme.md
index f8ad2b72..fc58c5bc 100644
--- a/readme.md
+++ b/readme.md
@@ -17,7 +17,7 @@ Simply submit a feature request containing the following:
 - A saturation value.
 - An intensity/lightness offset.
 
-Use [this tool](https://https://www.w3schools.com/colors/colors_hsl.asp) as a reference.
+Use any HSL color chooser as a reference.
 
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