diff --git a/packages/ui/src/components/message-part.css b/packages/ui/src/components/message-part.css
index 58ab89371..3363c5133 100644
--- a/packages/ui/src/components/message-part.css
+++ b/packages/ui/src/components/message-part.css
@@ -238,7 +238,7 @@
 
     strong,
     b {
-      color: var(--text-base);
+      color: var(--text-weak);
     }
 
     p:has(strong) {