The discoloration will probably change over time, so your best bet is to get a color correction palette with multiple colors and go by what it’s looking like that day. NYX makes a really good affordable one.

Google color wheel and choose the opposite color of the one you need to correct. For example, the opposite of red is green, so if you have a lot of redness, that is the color you would use. Likewise, the opposite of purple is yellow, which will come in handy if you have bruising.

Blend the color corrector in, then put a foundation or concealer that matches your skin tone on top of that.

The best way to find your foundation is to go to a makeup store like ulta or Sephora and test them out. Make sure you wait a little while before choosing because a lot of them will get darker or change color when they dry. It may also be helpful to bring a friend or ask someone who works at the store to help you. I find it always helps to have a second pair of eyes and getting the wrong color can make your skin look like a mess.

Edit: for grammar