diff --git a/src/web/html/index.html b/src/web/html/index.html
index ce8bdfed..bd6fc574 100755
--- a/src/web/html/index.html
+++ b/src/web/html/index.html
@@ -30,7 +30,7 @@
         <meta name="keywords" content="base64, hex, decode, encode, encrypt, decrypt, compress, decompress, regex, regular expressions, hash, crypt, hexadecimal, user agent, url, certificate, x.509, parser, JSON, gzip,  md5, sha1, aes, des, blowfish, xor" />
 
         <link rel="icon" type="image/ico" href="<%- require('../static/images/favicon.ico').default %>" />
-
+        <script type="application/javascript" src="../darkreader.js"></script>
         <script type="application/javascript">
             "use strict";
 
@@ -894,5 +894,11 @@
                 </div>
             </div>
         </div>
+    <script type="application/javascript">
+        // Enable when system color scheme is dark
+        DarkReader.auto({
+            contrast: 110
+        });
+    </script>
     </body>
 </html>