Overview
The background color of my iPhone app in the simulator (iMac) looks different from the color on the device (iPhone 3GS).
EDIT (following section has been added)
The following are all different:
I suppose I should go with how it looks on the device.
Questions
Credit goes to @jtbandes for suggesting to send screenshots which led to the solution
I am just answering the question for completeness.
Steps I followed:
My RGB offset (not be followed blindly)
based on my experience, i added the following RGB values to get the color I wanted, it is only rough and worked for me:
Different angles (best to keep it horizontal)
Holding the phone in different angles also gives different shades, keeping it horizontal did give the color