Off White Comiv What Is The Difference Between The Color White And The Color Off-white?

What is the difference between the color white and the color off-white? - off white comiv

I want to buy a suite, and I looked at the site of the Men's Wearhouse, and there was just outside the suites, but they seemed pure white.

Is there really a big difference, because if there is no buy-out white suit.