Open Google Docs in your browser
Click the three-line menu in the top-left
Select Settings
Turn on Dark mode if available
If Dark mode is not available, use your browser’s dark theme or dark mode extension
On Chrome, open Settings
Go to Appearance
Set Theme to Dark
On mobile, open the Google Docs app
Tap the menu icon
Tap Settings
Enable Dark theme or choose Theme and select Dark
If needed, enable your device’s system dark mode
Refresh Google Docs after changing the theme