How to even out a tan?

Okay, so i went to a baseball game and i didnt put on sunscreen because it said it was going to be like 70 degrees or something and we also forgot to bring it. Anyways, it got really hot and I was wearing jeans with holes in them. When i got home i changed into shorts and noticed i had gotten sunburned on the places where there were holes in the jeans, and it looked really bad since only part of the legs were sunburned. Now what was weird was that it was red, but it didnt hurt at all and wasnt peeling. About 2 days later the redness had faded and now it looks like a tan. So PART of my leg is a darker color and it looks weird. And i dont really want to sit out in the sun since thats bad.. soo i dont know what to do. hahah