Illustrator is butchering the colors when I export.

I'm trying to get high-quality exports of some illustrations I'm working on, but when I export it messes all the colors up. I've attached both a screenshot (shows accurate colors) and an exported jpg (absolutely wrong) for two separate files. Can anyone tell me what I might be doing wrong? I didn't change any color settings or mess with any export stuff, and it's just WRONG. It's driving me nuts and no one else seems to be having this problem.