How do I get rid of orange/red tint on my phone?

[Geezy125]

I got my s8 about the 6 months ago and I've never had a problem with it but a few months I accidentally dropped it, at first It was fine the screen didn't suffer any damage but over time I started to notice that half the screen had and orange/red tint while the other half was fine. I was wandering what the cause of this could be, as I stated before when I dropped my phone it wasn't there so I assumed that couldn't be the problem.

Here are some pictures of it:
https://drive.google.com/file/d/1rHp9auBAUXrsJ-gHqJpWM96Aop0tVgXn/view

https://drive.google.com/file/d/1cT0BMZ3MjXqvnkH0EXtka3fOMwwDgLJs/view

https://drive.google.com/file/d/13H40QZRz8Xlqd56cWGrjdQbLvq8LHqQy/view

 

[Rukbat]

You posted them as private pictures, so no one but you can see them. But check in Settings - search for reading. (It should be in Display.) Reading mode gives the screen background a warmer color.