diff --git a/src/c3nav/site/static/site/css/c3nav.scss b/src/c3nav/site/static/site/css/c3nav.scss
index 523aa412..e6eb383d 100644
--- a/src/c3nav/site/static/site/css/c3nav.scss
+++ b/src/c3nav/site/static/site/css/c3nav.scss
@@ -22,6 +22,7 @@
     --color-button-hover: var(--color-quinary);
     --color-focus: var(--color-foreground);
     --color-attribution-background: var(--color-overlay-background);
+    --color-input-border: var(--color-quaternary);
 
     --color-map-overlay: var(--color-primary);
     --color-route-dashes: #888888;
diff --git a/src/c3nav/static/milligram/_Form.sass b/src/c3nav/static/milligram/_Form.sass
index 30395cef..ee5b075e 100644
--- a/src/c3nav/static/milligram/_Form.sass
+++ b/src/c3nav/static/milligram/_Form.sass
@@ -12,7 +12,7 @@ input[type='url'],
 textarea,
 select
 	background-color: transparent
-	border: .1rem solid var(--color-quaternary)
+	border: .1rem solid var(--color-input-border)
 	border-radius: .4rem
 	box-shadow: none
 	box-sizing: inherit // Forced to replace inherit values of the normalize.css