It looks pretty good here, I suspect any of several possibles: 1) if you are on a Mac, try doing a detailed color balance/monitor profile (I have to do this once every couple months to keep color fairly accurate), not sure about PC but I don't think photoshop has the monitor utility from older versions anymore. 2) monitor could be bad, but not likely, 3) bad compression or over compressed, try uncompressed, Png or tiff to see the difference, 4) switch to a different color profile - may be on srgb so switch to adobe 1998 or another broad-gamut rgb color profile. Can do HSV but you wind up having to convert again later and the same issue happens. Finally, this should have been first, do you see the weird colors when you convert to grayscale? If the colors dissappear, then it's the file, if the colors stay its likely the monitor.