JPEG or PNG with color profile embedded may not showed up the same in some browsers/OS.
| with profile | no profile | |
| JPEG | |
|
| HTML color code | 9C7D3A | 9C7D3A |
Don't embed color profile when you save as or save to web in Photoshop.
Notes:
* The color may shift when you save PSD to JPG, e.g. 9C7D38 would become 9C7D3A.
* you can check whether the image has profile in finder also.
see http://css-tricks.com/color-rendering-difference-firefox-vs-safari/