diff --git a/src/web/stylesheets/themes/_dark.css b/src/web/stylesheets/themes/_dark.css
index 8ebfb132..4d2941f2 100755
--- a/src/web/stylesheets/themes/_dark.css
+++ b/src/web/stylesheets/themes/_dark.css
@@ -108,7 +108,7 @@
     /* Highlighter colours */
     --hl1: #264f78;
     --hl2: #675351;
-    --hl3: #ffb6b6;
+    --hl3: #c40000;
     --hl4: #fcf8e3;
     --hl5: #38811b;