diff --git a/app/appearance/themes/midnight/theme.css b/app/appearance/themes/midnight/theme.css
index 12ce4d2d4..dab583e4e 100644
--- a/app/appearance/themes/midnight/theme.css
+++ b/app/appearance/themes/midnight/theme.css
@@ -168,7 +168,7 @@
     --b3-protyle-inline-u-color: inherit;
     --b3-protyle-inline-s-color: inherit;
     --b3-protyle-inline-link-color: #8ab4f8;
-    --b3-protyle-inline-mark-background: rgba(255, 208, 0, .4);
+    --b3-protyle-inline-mark-background: #b29100;
     --b3-protyle-inline-mark-color: var(--b3-theme-on-background);
     --b3-protyle-inline-tag-color: #9aa0a6;
     --b3-protyle-inline-blockref-color: #8957e5;