Color in SDR manner was vivid and dazzling just after calibration. The PX277 OLED MAX is rather correct at the time altered. I compromised with a rather darker gamma setting to further improve saturation. Turning up the brightness slider brought the image back again to some shiny state. HDR online https://edwinvogwm.qodsblog.com/31168192/the-2-minute-rule-for-is-it-good-to-have-saturation-max-on-gaming-monitor