Which color should we pick for the shower?

Hi guys! We are remodeling our bathroom and we would love to get new tile on the tub walls, but it’s just not in the budget right now. The current tub walls are very yellow and it’s just not what we are going for. But now we can’t decide if we should do pure white or an off white on the tub. Our walls will be in alabaster by SW and our floors are a beige with blue. Which should we do? I can’t really get a great picture of the pieces because our lighting in this room is awful!