Simple questions: What is the Night light in Windows 10 and how to use it?

Whether it is because we look at them too much or because they radiate too much blue light, screens are known to cause eye problems. In today's world, it is almost impossible to avoid using them. There are also many night owls like ourselves, watching our computers' screens during the night, on a regular basis. One good news is that starting with the Creators Update, Windows 10 includes Night light, a display mode which is designed to reduce eye strain by decreasing the blue light emitted by your PC. In this article we show you how it does that and how to enable it:

NOTE: This guide is created for Windows 10 Creators Update, which will be available to all Windows 10 users, for free, starting with the spring of 2017. Previous Windows 10 versions that were released before 2017 don't have this feature while newer versions do.

What is the "Night light" in Windows 10?

If you find yourself working on your computer or laptop at late hours, you put a lot of pressure on your eyes. After looking at your monitor for a while during nighttime hours, your eyes dim to cope with the discrepancy between the bright light in front of you and the dark environment around you. Then, after another period, tears might also start coming from your eyes, your head starts to hurt and sleep seems to run away from you. If you're a night owl, you are probably very familiar with all these symptoms.

In the recent years, evidence has appeared that the eye fatigue you feel when looking at a screen at night, and a whole range of health issues are caused by the exposure to blue light. It is what keeps you up from sleeping, and it is what hurts your eyes.

Fortunately, big names from the tech world have started to take notice of this problem, and Microsoft is one of them. The company's solution is called Night light: a special display mode that changes the colors displayed on your screen into warmer versions of themselves. In other words, Night light partially removes the blue light from your screen. Read the next section to learn how to enable this feature.

How to enable "Night light" in Windows 10

Start by opening the Settings app. A quick way to do it is to open the Start Menu and then click or tap on the gear icon on the left.

Inside the Settings app, open the System category.

On the column on the left side of the window, go to the section called Display.

On the right of the Settings window, find the section called Color and turn On the Night light switch.

By default, the Night light mode will be scheduled to activate between sunset and sunrise. You will see that the next event, when the Night light will be enabled or disabled, displayed on the right of its name, between brackets.

That is not all: you can customize the intensity of the Night light, and you can change its schedule if you want. Read the next sections in this tutorial to see which are the changes you can make.

How to adjust the "Night light" color temperature in Windows 10

To make changes to the way Night light works on your Windows 10 PC, you will have to click or tap on Night light settings, right under the Night light switch.

In the Night light settings, you will get a short explanation about the fact that "Screens emit blue light, which can keep you up at night. Night light displays warmer colors to help you sleep". Then, you get a switch that does the same thing as the one before: turn the Night light mode On or Off.

Then, you will see a slider called "Color temperature at night." Dragging this slider to the left or the right will make your screen use warmer, yellowish colors to reduce eye strain, or the regular cooler and blueish colors. Play a bit with this slider and see what's the color temperature that feels best to you at night. If you do this at night, it shouldn't be too hard to find the right setting, where you can feel your eyes begin to relax a bit.

How to set when the "Night light" turns on automatically

In the same "Night light settings" window, right after the "Color temperature at night" slider, you see a section called Schedule. If you turned the Night light On, the Schedule Night light switch will be On and set to be applied between Sunset to sunrise. The exact time of sunset and sunrise is automatically calculated by Windows 10 depending on your location.

If you want to schedule the Night light mode to be applied automatically to specific hours of the day, click or tap the "Set hours" option and manually select the Turn on and Turn off times.

That is everything you can configure for the Night light mode in Windows 10.

The quick way of turning "Night light" on and off

There's a faster way of turning On or Off the Night light mode in Windows 10, other than going through the Settings app. Open the Action Center by clicking on its icon on the bottom right corner of your screen, or by sliding your finger from the right edge of the screen if you have a device with a touchscreen. You can also press Windows + A on your keyboard, for the same effect.

Then click or tap on Expand to see all the available quick actions.

Then, in the quick actions section, click or tap on the Night light button to toggle it from On to Off and the other way around.


Even if you work late long hours, that does not mean you cannot take care of your health, including your eyes and sleep. Reducing blue light seems to help in this matter, so Microsoft decided to give us a tool to do just that. Try it and see how it goes for you. Then, come back and tell us if it helped reduce the strain on your eyes and if you managed to sleep better.