diff --git a/src/resources/formats/html/bootstrap/_bootstrap-variables.scss b/src/resources/formats/html/bootstrap/_bootstrap-variables.scss
index eb99e2a833..eac435e849 100644
--- a/src/resources/formats/html/bootstrap/_bootstrap-variables.scss
+++ b/src/resources/formats/html/bootstrap/_bootstrap-variables.scss
@@ -242,7 +242,7 @@ $table-group-separator-color: mix(
 $table-group-separator-color-lighter: mix(
   if(variable-exists(body-color), $body-color, $gray-900),
   $body-contrast-bg,
-  70%
+  20%
 ) !default;
 
 $bootstrap-version: 5;