diff --git a/web/styles/dark_theme.css b/web/styles/dark_theme.css
index c12f3ad360..ab9d4648b8 100644
--- a/web/styles/dark_theme.css
+++ b/web/styles/dark_theme.css
@@ -933,6 +933,10 @@
     }
 
     .rendered_markdown {
+        .alert-word {
+            background-color: hsl(22deg 70% 35%);
+        }
+
         .user-mention,
         .user-group-mention {
             background: linear-gradient(
@@ -1344,7 +1348,7 @@
 
     /* Search highlight used in both topics and rendered_markdown */
     .highlight {
-        background-color: hsl(51deg 100% 64% / 42%);
+        background-color: hsl(51deg 100% 23%);
     }
 
     .sub-unsub-message span::before,
diff --git a/web/styles/rendered_markdown.css b/web/styles/rendered_markdown.css
index b70ba2a676..ccc5b741d8 100644
--- a/web/styles/rendered_markdown.css
+++ b/web/styles/rendered_markdown.css
@@ -178,7 +178,7 @@
     }
 
     .alert-word {
-        background-color: hsl(102deg 85% 57% / 50%);
+        background-color: hsl(18deg 100% 84%);
     }
 
     /* Timestamps */
@@ -698,5 +698,5 @@
 
 /* Search highlight used in both topics and rendered_markdown */
 .highlight {
-    background-color: hsl(51deg 94% 74%);
+    background-color: hsl(51deg 100% 79%);
 }