diff --git a/Doc/whatsnew/3.14.rst b/Doc/whatsnew/3.14.rst
index ba18991dee89d7..8efff2613f60c4 100644
--- a/Doc/whatsnew/3.14.rst
+++ b/Doc/whatsnew/3.14.rst
@@ -151,6 +151,14 @@ Added support for converting any objects that have the
 (Contributed by Serhiy Storchaka in :gh:`82017`.)
 
 
+http
+----
+
+Directory lists and error pages generated by the :mod:`http.server`
+module allow the browser to apply its default dark mode.
+(Contributed by Yorik Hansen in :gh:`123430`.)
+
+
 json
 ----
 
diff --git a/Lib/http/server.py b/Lib/http/server.py
index 2d010649e56b51..a6f7aecc78763f 100644
--- a/Lib/http/server.py
+++ b/Lib/http/server.py
@@ -114,6 +114,11 @@
 <html lang="en">
     <head>
         <meta charset="utf-8">
+        <style type="text/css">
+            :root {
+                color-scheme: light dark;
+            }
+        </style>
         <title>Error response</title>
     </head>
     <body>
@@ -804,6 +809,7 @@ def list_directory(self, path):
         r.append('<html lang="en">')
         r.append('<head>')
         r.append(f'<meta charset="{enc}">')
+        r.append('<style type="text/css">\n:root {\ncolor-scheme: light dark;\n}\n</style>')
         r.append(f'<title>{title}</title>\n</head>')
         r.append(f'<body>\n<h1>{title}</h1>')
         r.append('<hr>\n<ul>')
diff --git a/Misc/NEWS.d/next/Library/2024-08-29-14-51-36.gh-issue-123430.M7wXl9.rst b/Misc/NEWS.d/next/Library/2024-08-29-14-51-36.gh-issue-123430.M7wXl9.rst
new file mode 100644
index 00000000000000..0afdad7917fa8f
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-08-29-14-51-36.gh-issue-123430.M7wXl9.rst
@@ -0,0 +1 @@
+Pages generated by the :mod:`http.server` module allow the browser to apply its default dark mode.
