How to Turn On or Off Night Light in Windows 11

This tutorial will show you how to turn on or off night light in Windows 11.

Why Use Night Light?

Your display gives off blue light. This is the same kind of light you see during the day. Blue light can keep you awake at night. When you turn on night light, your display shows warmer colors instead. These warmer colors are easier on your eyes and can help you sleep better.

Understanding Night Light Settings

The night light strength level is measured in Kelvin. You can set a strength level between 0 (6500K) to 100 (1200K). Pick whatever feels comfortable to your eyes.

You can also turn on the schedule feature for night light. Choose Sunset to sunrise to have it turn on automatically. Or select Set hours and enter custom times for when you want night light to turn on and off.

Important Information

Night light is not available if your device uses certain drivers like DisplayLink or Basic Display.

Night Light settings are stored in these registry keys for your account:

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\CloudStore\Store\DefaultAccount\Current\default$windows.data.bluelightreduction.bluelightreductionstate

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\CloudStore\Store\DefaultAccount\Current\default$windows.data.bluelightreduction.settings

The Night Light feature requires the Connected Devices Platform Service to be enabled and running.

Option One: Use Quick Settings

1. Open Quick Settings by pressing Win+A.
2. Click the Night light button to turn it on or off.

Option Two: Use Settings

1. Open Settings by pressing Win+I.
2. Click System on the left side.
3. Click Display on the right side.
4. Turn Night light on or off for what you want.
5. You can now close Settings if you like.

Summary

Night light reduces blue light from your display at night. This makes your screen show warmer colors that are easier on your eyes and can help you sleep. You can turn night light on or off in two ways: using Quick Settings (Win+A) or using the Settings app (Win+I). You can also set a schedule so night light turns on and off automatically at sunset and sunrise. The strength level can be adjusted from 0 to 100 to match what feels comfortable for you.