diff --git a/webstepper/CHANGELOG.md b/webstepper/CHANGELOG.md
index a016bf07..6aa70d27 100755
--- a/webstepper/CHANGELOG.md
+++ b/webstepper/CHANGELOG.md
@@ -11,6 +11,7 @@ and adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 - Added the MemoryViz logo as a favicon
 - Added dark mode syntax highlighting for the code display
+- Aligned grey background colours in dark mode
 
 ### 🐛 Bug fixes
 
diff --git a/webstepper/src/index.tsx b/webstepper/src/index.tsx
index 6e48ebac..033d45b0 100644
--- a/webstepper/src/index.tsx
+++ b/webstepper/src/index.tsx
@@ -108,7 +108,7 @@ const darkTheme = createTheme({
         },
         background: {
             default: "#121212",
-            paper: "#1e1e1e",
+            paper: "#151515",
         },
         text: {
             primary: "#e0e0e0",