In Google Calendar, you can switch the default bright background to a dark background.
Turn on Dark theme in the Calendar app
Important: You can use Dark theme in the Calendar app on Android 7 and up. Learn how to check your Android version.
- On your Android phone or tablet, open Calendar .
- Tap Menu Settings General.
- On the “General” page, tap Theme Dark.
Tips:
- To change the theme of your Calendar widget and notifications, manage your Android screen and display settings.
- For Android 10 and up: If "battery saver mode" or "Dark theme" is enabled in your system settings, widgets and the Calendar automatically switch to a Dark theme.
- For Android 9 and lower: Widgets are always in Light theme.