Why does the same RGB value appear different between Interface Builder and Photoshop?

Question

I have a UIImageView that I've pointed to a PNG who's background is RGB(240,240,240). I've then set the parent UIView's background to the same colour in Interface Builder.

You'll notice that they are slightly different. When I take a screenshot and re-examine, I see that the UIView's background in IB is not RGB(240,240,240), but RGB(236,236,236).

Why is this??

Answer 1

Do you have a manufacturer specific monitor driver installed? Have a look at the monitor profile. Its probably different from the colour profile in photoshop