diff --git a/static/css/style.css b/static/css/style.css
index 35bd495..e7882c0 100644
--- a/static/css/style.css
+++ b/static/css/style.css
@@ -94,3 +94,9 @@ header nav a:hover {
     text-underline-position: under;
   }
 }
+
+@media (prefers-color-scheme: dark) {
+  img {
+    filter: brightness(0.8) contrast(1.2);
+  }
+}