diff --git a/files/static/src/main.css b/files/static/src/main.css
index c84ca4bbc6..3b22648ea2 100644
--- a/files/static/src/main.css
+++ b/files/static/src/main.css
@@ -18,14 +18,14 @@
 .theme-seaside {
 	--color-primary: 234,179,8;
 	--color-100: 245,253,254;
-	--color-200: 217,247,250;
+	--color-200: 185,239,245;
 	--color-300: 157,237,247;
 	--color-400: 126,213,226;
-	--color-500: 6,182,212;
+	--color-500: 56,173,193;
 	--color-600: 8,145,178;
-	--color-700: 14,116,144;
-	--color-800: 17, 76, 94;
-	--color-900: 12, 47, 60;
+	--color-700: 23,108,131;
+	--color-800: 17,76,94;
+	--color-900: 12,47,60;
 }
 
 .theme-cambridge {