I was just saving it as a jpg, not using save for web.
But on the plus side, my partner figured it out!! I don’t know what he did but he said he fixed it! Thank you for the help. 🙂
The fact that the thumbnail looks normal is even weirder…. that’s the part that makes me completely lost.
Thanks for your response, by the way.
That is really strange. I’m saving it with Photoshop CS6, just like I did with all of the others. The even stranger part is that when I tried to adjust the colors of the original manually to make it more blue/green/cyan and then upload it, it comes out even MORE magenta. I’m completely baffled, as nothing like this has ever happened before. And when I upload the same image through another avenue that is not WordPress, the colors are normal and fine. It seems to get ruined in the upload somehow.