I am doing a kids bathroom and would like to use Rittenhouse Square subway tiles on the tub/shower surround. The floor will be ivory 1" hex tiles with one smallish diamond pattern using charcoal grey 1" hex. The hex tiles are from Mosaic Tile Supplies and their ivory color is very similar to American Olean "Biscuit" hex tiles.

For the subway tile tub surround, I am trying to decide between Rittenhouse Square subway tiles in the colors White 0100 White K101 and Biscuit K175. Even though Biscuit seems like a good color match with the hex tiles, I think it is too creamy/off-white. From the very small samples I see at the tile store, I can barely tell any difference between the two whites 0100 and K101. I prefer a creamier white, but probably a little closer to a true white than the Biscuit.

Thanks in advance for any advice!