diff --git a/packages/docusaurus-theme-classic/src/theme/ColorModeToggle/index.tsx b/packages/docusaurus-theme-classic/src/theme/ColorModeToggle/index.tsx
index e2d0c297f63c..5e0f020ce5c4 100644
--- a/packages/docusaurus-theme-classic/src/theme/ColorModeToggle/index.tsx
+++ b/packages/docusaurus-theme-classic/src/theme/ColorModeToggle/index.tsx
@@ -59,7 +59,8 @@ function ColorModeToggle({
         disabled={!isBrowser}
         title={title}
         aria-label={title}
-        aria-live="polite">
+        aria-live="polite"
+        aria-pressed={value === 'dark' ? 'true' : 'false'}>
         <IconLightMode
           className={clsx(styles.toggleIcon, styles.lightToggleIcon)}
         />