diff --git a/ts/src/stats/graphs.scss b/ts/src/stats/graphs.scss
index 397d3f785..98dd852ab 100644
--- a/ts/src/stats/graphs.scss
+++ b/ts/src/stats/graphs.scss
@@ -1,7 +1,9 @@
 $day-fg: black;
 $day-bg: white;
+$day-tooltip-bg: #fcfcfc;
 $night-fg: white;
 $night-bg: #222;
+$night-tooltip-bg: #272727;
 
 * {
     box-sizing: border-box;
@@ -23,7 +25,7 @@ body {
     pointer-events: none;
     transition: opacity 0.3s;
     color: $day-fg;
-    background: $day-bg;
+    background: $day-tooltip-bg;
 }
 
 .graph {
@@ -148,7 +150,7 @@ body.night-mode {
 
 .night-mode {
     .graph-tooltip {
-        background: $night-bg;
+        background: $night-tooltip-bg;
         color: $night-fg;
     }
     .range-box {