Key fact
Avoid the Calibrate option in System Prefs > Displays > Color, which will probably make things worse. If you’re concerned about display accuracy, try a hardware calibrator such as Datacolor’s Spyder5 (around $130) or the new SpyderX.
Avoid the Calibrate option in System Prefs > Displays > Color, which will probably make things worse. If you’re concerned about display accuracy, try a hardware calibrator such as Datacolor’s Spyder5 (around $130) or the new SpyderX.