Calibrate your Mac display
How you perceive the colors on your display can be affected by many factors, such as ambient light, the position and angle of the display, and the age of the display. To accommodate for these factors, you can adjust your display using Display Calibrator Assistant.
Note: Calibrating your display isn’t usually necessary for a Mac in a typical home or office environment.
On your Mac, choose Apple menu > System Preferences, then click Displays .
Click the Color Profile pop-up menu, then choose Customize. A list of color profiles for your display and other color profiles appears.
Click the Add button to open Display Calibrator Assistant.
Display Calibrator Assistant walks you through adjusting your display, then creates a calibrated color profile. The number of adjustments in the calibration process varies depending on the type of display.
When the display profile is ready, it’s automatically assigned as your display’s color profile.
Some displays have additional built-in color accuracy and calibration features. See the documentation that came with your display.