Wash it in cold water when your other whites. dont wash it with darks even though there is designs on it it will discolor your white. Also, it helps to turn the shirt inside out before putting in the washer. This is what I do in this situation. Good luck! Hope this helps!
That means that the colors will bleed in warm and hot water. Wash it cold, and you may want to use one of those color absorbing ionic cloth sheets. You can put it with other colors provided you don't think they'll bleed in a cold water wash either.
Turn it inside out, wash it in cold water. There is a laundry ball that you can buy that will absorb any color in the wash so that the white in the shirt doesn't get dye on it.