I don't think I explained the problem very well - the source code uses an HTML color of 0e2f49 which matches the color used in the images. On the deployed page, neither the image nor the background displays correctly - they match each other perfectly, they just don't match the color values of the source code or the source image, which I can check using the color meter. (By contrast, the original PSD mock-up displays fine, and everything displays fine on PCs.) The images are from Photoshop with an RGB color space. Thanks!