How to check Mac OS X version
iOS devices also have Night Shift settings. Matching please see.
iPhone/iPad - Night Shift settings (cut blue light)
Night Shift setting (cut blue light)
Selecting “Custom” allows you to set the “Start” and “End” times for Night Shift. This setting is recommended because “Night Shift” is turned on at sunset and “Night Shift” is turned off at sunrise.
macOS - Adjust display brightness (brightness) macOS - Display brightness Auto-adjust brightness on/off