diff --git a/themes/tiddlywiki/vanilla/colours.tid b/themes/tiddlywiki/vanilla/colours.tid
index 0586b5676..7e30a8212 100644
--- a/themes/tiddlywiki/vanilla/colours.tid
+++ b/themes/tiddlywiki/vanilla/colours.tid
@@ -1,7 +1,7 @@
 title: $:/themes/tiddlywiki/vanilla/colours
 type: application/x-tiddler-dictionary
 
-primary: `#007dff`
+primary: `#5778D8`
 background: `#fff`
 foreground: `#333`
 pagebackground: `#ececec`