Most newer computer operating systems, such as Windows 10 and macOS, can be set to automatically adapt display colours and brightness to the surrounding environment. For instance, when it's dark out, it's better for your eyes if your computer dials down the blue tones in the screen.
But this is a newer feature on computers, so if you have an older model, you might need help manually adjusting these dials. One way to do this is with the help of the software f.lux
, which is available for Windows and Mac.