diff --git a/web/src/app.css b/web/src/app.css
index 51b7d69..aaeeb94 100644
--- a/web/src/app.css
+++ b/web/src/app.css
@@ -242,6 +242,7 @@
 	--note-on-ink: #1e1e1e; /* dark text on the gold */
 	--nav-active-ink: #1e1e1e; /* dark text on the amber menu item */
 	--heading-ink: #8a8e90; /* PROJEKTER and the group names — quiet grey */
+	--note-group-bg: #2d3133; /* day separators take the menu's resting grey, not the darker ground */
 
 	--p1: #cf6b6b;
 	--p2: #d69f5c;
diff --git a/web/src/routes/noter/+page.svelte b/web/src/routes/noter/+page.svelte
index 01f1499..867dc17 100644
--- a/web/src/routes/noter/+page.svelte
+++ b/web/src/routes/noter/+page.svelte
@@ -1406,7 +1406,10 @@
 		top: 0;
 		z-index: 1;
 		margin: 0 0 var(--s1);
-		background: var(--ground);
+		/* --ground everywhere but Kul, where the ground is the darkest thing on screen
+		   and a day separator on it reads as a dark bar. There it takes the menu's own
+		   resting colour instead, via --note-group-bg. */
+		background: var(--note-group-bg, var(--ground));
 		border-radius: var(--radius);
 	}