diff --git a/CHANGELOG.md b/CHANGELOG.md
index da88454df5a946da68e11347064b7e280221ebb1..1b50400de0e7c6e8edc9ea286b8c2d6cffd0b742 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ Note that since we don't clearly distinguish between a public and private interf
 - Store URL of downloaded assets to detect zip/gzip based on extension
 - Add optional `operator.key`; can be referenced in `IndexPairBonds`
 - Add overpaint/transparency/substance theme strength to representations
+- Fix viewport color for transparent background
 
 ## [v3.23.0] - 2022-10-19
 
diff --git a/src/mol-plugin-ui/skin/base/components/viewport.scss b/src/mol-plugin-ui/skin/base/components/viewport.scss
index 2ca2872ace8a899d7e3eaf86ddbdbca392a27935..b5e2098c53ff67916f8295a43a0dee463b35de26 100644
--- a/src/mol-plugin-ui/skin/base/components/viewport.scss
+++ b/src/mol-plugin-ui/skin/base/components/viewport.scss
@@ -4,7 +4,7 @@
     top: 0;
     right: 0;
     bottom: 0;
-    background: black;
+    background: $default-background;
 
     .msp-btn-link {
         background: rgba(0,0,0,0.2);