Merge pull request #228 from makeplane/fix-dark--mode-code-accesibility

fix: update dark mode brand color with better accessibility

Author: danciaclara

docs/.vitepress/theme/style.css

@@ -200,11 +200,11 @@
   --vp-c-bg-mute: #1f1f1f;
 
   /* Brand colors */
-  --vp-c-brand-1: #2893cc;
-  --vp-c-brand-2: #2893cc;
-  --vp-c-brand-3: #2893cc;
+  --vp-c-brand-1: #2f9bd5;
+  --vp-c-brand-2: #2f9bd5;
+  --vp-c-brand-3: #2f9bd5;
   --vp-c-brand-soft: rgba(0, 99, 153, 0.14);
-  --plane-500: #2893cc;
+  --plane-500: #2f9bd5;
 }
 
 /* ================================================