diff --git a/luhn-algorithm/style.css b/luhn-algorithm/style.css
index 44364c7..a14e73f 100644
--- a/luhn-algorithm/style.css
+++ b/luhn-algorithm/style.css
@@ -1,5 +1,5 @@
 :root {
-    --mdc-theme-primary: #00897b;
+    --mdc-theme-primary: #00adb4;
     --mdc-theme-secondary: #d84315;
 }
 .mdc-text-field-helper-text {