diff --git a/doc_src/python_docs_theme/static/pydoctheme.css b/doc_src/python_docs_theme/static/pydoctheme.css
index 3cfa3fb9d..6e98a3288 100644
--- a/doc_src/python_docs_theme/static/pydoctheme.css
+++ b/doc_src/python_docs_theme/static/pydoctheme.css
@@ -349,7 +349,7 @@ kbd {
 
 @media (prefers-color-scheme: dark) {
     body {
-        background: linear-gradient(to top, #171f2f 0%,#03131a 100%);
+        background: linear-gradient(to top, #1f1f3f 0%,#051f3a 100%);
     }
     div#fmain {
         color: #DDD;
diff --git a/share/tools/web_config/fishconfig.css b/share/tools/web_config/fishconfig.css
index e2479e2dc..3b64ebc7c 100644
--- a/share/tools/web_config/fishconfig.css
+++ b/share/tools/web_config/fishconfig.css
@@ -634,7 +634,7 @@ img.delete_icon {
 
 @media (prefers-color-scheme: dark) {
     body {
-        background: linear-gradient(to top, #171f2f 0%,#03131a 100%);
+        background: linear-gradient(to top, #1f1f3f 0%,#051f3a 100%);
         color: #DDD;
     }