diff --git a/web_src/less/themes/theme-arc-green.less b/web_src/less/themes/theme-arc-green.less
index 7c084284d105..7b4d676f8fa1 100644
--- a/web_src/less/themes/theme-arc-green.less
+++ b/web_src/less/themes/theme-arc-green.less
@@ -110,6 +110,10 @@
   --color-project-board-bg: var(--color-secondary-light-2);
 }
 
+::-webkit-calendar-picker-indicator {
+  filter: invert(.8);
+}
+
 .ui.horizontal.segments > .segment {
   background-color: #383c4a;
 }