diff --git a/static/styles/dark_theme.css b/static/styles/dark_theme.css
index b480e7efbb..0100325aac 100644
--- a/static/styles/dark_theme.css
+++ b/static/styles/dark_theme.css
@@ -6,6 +6,8 @@
      */
     @extend %dark-theme-block;
 
+    color-scheme: dark;
+
     body {
         color: hsl(236, 33%, 90%);
     }
diff --git a/static/styles/zulip.css b/static/styles/zulip.css
index 9981887d8b..1994d37ae4 100644
--- a/static/styles/zulip.css
+++ b/static/styles/zulip.css
@@ -49,6 +49,10 @@ body,
     transition: background-color 200ms linear;
 }
 
+:root {
+    color-scheme: light;
+}
+
 input,
 button,
 select,