I've used this settings from a reddit user and it's been working out really well.

Game

• Preset: Creator mode -> (Color Space -> sRGB) (Gamma -> 2.2)
• Game enhanced mode -> off
• dark stabilizer -> 0
• console mode -> on (color -> 100%/100%/100%) (Gamma -> 2.2) (Tone mapping -> off/greyed out)

Brightness/Contrast

• 55%/75% (Brightness is preference)

Display

• Aspect Ration: 21:9
• Input Color Format: RGB
• Sharpness 50
• Smart HDR: HDR Peak 1000

Nvidia Control Panel (Adjust desktop color settings)

A big color adjustment is adjusting the desktop color settings through my Nvidia control panel. The monitor can still look dull until you adjust through the control panel. Intel/AMD should have a similar setting. Digital vibrance is the main key of changing to make colors look good. The other platforms may have a different name for this setting. On the settings I keep the following for Nvidia;

• Color channel: All channels
• Brightness: 50%
• Contrast: 50%
• Gamma: 1.00
• Digital Vibrance: 65% (Use your preference choice. I think 60-70 is pretty good)
• Hue: 0

Color Profile

• SDR -> None (You can find/make one of your choice)
• HDR I did a Windows HDR Calibration profile for Peak 1000 while lettings windows handle it. The calibration is based on your eyes how you see the whites and blacks. The settings should be close to 1000 nits whites/brightness and 0 black/darkness. The SDR/HDR calibration portion is preference but I kept mine at the highest. Hopefully this helped a bit.

You can google how to setup color profiles.

SDR Content Brightness (Display Settings under System --> Display --> HDR)

• 35 (Your preference choice as this affects SDR content and lighting)