You can turn on Dark Mode in macOS by following these steps: Click on the Apple icon in the top left corner of your screen and select “System Preferences” from the drop-down menu. Click on “General.” Under “Appearance,” click on “Dark.” Close the System Preferences window. Your macOS will now be in Dark Mode, and the menus and windows will have a dark background. If you wish to turn it off, simply follow the same steps and select “Light” instead of “Dark” in the General settings. You can also use a keyboard shortcut to turn on Dark mode: Control + Option + Command + T Additionally, you can also schedule Dark mode, so it turns on automatically at sunset and turns off at sunrise.