Hi, first of all I would try turning on true tone, this would help adapting color based on ambient light conditions.
Then, I would go to the accesibility settings and check out if there is no colour correction option enabled.
To disable color correction on an iPhone, you can follow these steps:
1. Open the Settings app on your iPhone. The Settings app icon is a gray gear icon.
2. Scroll down and tap on "Accessibility." It is usually located in the third group of settings options.
3. In the Accessibility menu, tap on "Display & Text Size."
4. Scroll down to find the "Color Filters" option. Tap on it.
5. You will see a switch next to "Color Filters." If the switch is green, it means color filters are enabled. Toggle the switch to turn it off and disable color filters.
6. You can also adjust the "Intensity" slider if color filters are still partially enabled. Slide it all the way to the left to ensure color correction is fully disabled.
7. Exit the Settings app, and the color correction effect should no longer be active on your iPhone.
If the issue persists, I would try forcing a restart: Force restart iPhone - Apple Support