To help your eyes in dim light, you can change the colors of your Chromebook screen. Red hues are easier to see at night and can help you fall asleep later.
Use “Night Light” to set a custom color and adjust its schedule. You can also use Dark mode to change your Chromebook’s visual theme to a pre-set darker palette.
Change your screen color yourself at any time
- To open Quick Settings, at the bottom right, select the time.
- Select Settings
.
- In the "Device" section, select Displays.
- Under "Night Light," turn on Night Light.
- Under "Color temperature," adjust the color.
Automatically change your screen color at night
- At the bottom right, select the time.
- Select Settings
- In the "Device" section, select Displays.
- Under "Night Light," turn on Night Light.
- Choose when to change your screen’s color in the "Schedule" section:
- Custom time: Enter a start time and end time.
- Sunset to sunrise: Use your current location’s sunset and sunrise times to control Night Light.
- Turn off: To stop night mode from turning on automatically, select Never.
Tip: To quickly turn off Night Light, at the bottom right, select the time 
Turn on Dark mode
- On your desktop, right-click and select Set wallpaper & style.
- Select Theme.
- To turn on Dark mode, at the bottom, select Dark.
- To change between Light mode and Dark mode with a timed schedule, select Auto.