take a picture and post it so we can see it! hard to comment on colors when we don't know what it looks like

That's a rather cool toned granite from what I can see in photos. Your cabinetry is a warmer white? Porcelain tiles are available from very dark to very light. From little to no patterning to a ton. Select your flooring, shower tile, shower floor etc, and then select a top for cabinetry. Take a drawer or sample with you. It's not an online question. If this is a powder room with no bathing, what is the remaining flooring in your home / adjacent hallway?

https://www.google.com/search?q=bianco+antarctica+in+baths+photos&biw=1920&bih=860&tbm=isch&imgil=PwwnHL0FVIfwkM%253A%253BzTkpytGaMBsEcM%253Bhttp%25253A%25252F%25252Fwww.piuskb.com%25252Fshop%25252Fcountertops%25252Fbianco-antarctica-granite&source=iu&pf=m&fir=PwwnHL0FVIfwkM%253A%252CzTkpytGaMBsEcM%252C_&usg=__yIwz9Un0wVnjOfzTGfmOd1SJop4%3D&dpr=1&ved=0ahUKEwjduZX3r_3PAhWFMj4KHWneA2cQyjcIOA&ei=pjMTWN3ONoXl-AHpvI-4Bg#imgrc=PwwnHL0FVIfwkM%3A