Dark mode is a feature that lets you switch the color theme of an app, or an entire desktop operating system, to black or something close to it. Beyond the thrill of invigorating a tired design, some like to have the option available because it makes looking at your devices a little easier on the eyes. If you use a smartphone that has an OLED display, it might save some battery life, too.
These days, you can find official support for dark mode in a lot of places; Google just added a system-wide dark mode to its third beta of Android Q, and you can find it at the operating system level in macOS Mojave and on the Nintendo Switch. Dark mode is also available in several popular apps, including Slack, Twitter, and Google Chrome, and Google’s…
Source:
https://www.theverge.com/2019/3/22/18270975/how-to-dark-mode-iphone-android-mac-windows-xbox-ps4-nintendo-switch