Windows Night light
Built in Windows 10 and 11 setting that shows warmer colors at night, with strength and schedule controls.
The maker's own words say it acts on blue light.
- Runs on
- Windows
- Price
- Built into Windows. No price stated.
- Status
- Operating
- Website
- support.microsoft.com
- Checked
- 28 Sep 2026
What the maker says, in four columns
Lit: the maker's own words say the app acts on it. Outlined: mentioned, not claimed. Blank: not stated.
PWM flicker
Not stated by the maker.
DitheringMentions it, does not say the app changes it
“Even on displays that only support 8-bit color, auto color management helps to improve color quality by using different techniques, such as dithering.”Source: support.microsoft.com
Windows says it adds dithering here. It does not say it removes it.
BrightnessMentions it, does not say the app changes it
“You might not see the Brightness slider on devices that have an external monitor. To change the brightness on an external monitor, use the buttons on it.”Source: support.microsoft.com
For external monitors Microsoft points you to the monitor's own buttons.
Blue lightSays the app acts on this
“Move the Strength slider to adjust the intensity of the blue light reduction.”Source: support.microsoft.com
Other apps that say they act on blue light: CareUEyes, CircadianShield, Iris, Apple Night Shift, f.lux