Please post a link to the tile or edit the post title to include the tile name. You might get more help this way.

The tile comes in several colors but immassuming you mean the white below. If you are buying this at Home Depot, the grout aisle is one over, with grout chips. Check them out in person. But one benefit of chosing a tile with high color variability is that almost any white, as long as it is not yellow or pink, will look great. A Polyblend Plus in White will be fine.

A color from the tile so it might need to be custom. I never like white grout if it can be avoided .