diff --git a/doc/_static/custom.css b/doc/_static/custom.css
index c144de53a..5dac492ef 100644
--- a/doc/_static/custom.css
+++ b/doc/_static/custom.css
@@ -1,6 +1,6 @@
 html[data-theme="light"] {
   --pst-color-primary: rgb(93, 154, 181);
-  --pst-color-secondary: rgb(93, 155, 182);
+  --pst-color-secondary: rgb(93, 154, 181);
   --pst-color-secondary-bg: rgb(223, 235, 240);
 }