I would use a white vanity , you could pick up another color in the counter top.

Natural wood, white, or light gray.

I would use the light blue color in the tile.

Lovely! I think you should work with the vanity finish that works best with your master bedroom as I assume they are connected? Any photos so we can advise further?

Plan out the entire bathroom. Select your countertop and tile first as there is a more limited selection in those materials.

I would go with a lighter color than the floor. You could do white, greige, a gray with blue undertones, a light wood.

You somehow missed the color I liked for the vanity. It is the warm beigey color that is the outside line going around the diamond and cloverleafs in the tile.

Nancy in Mich I did another ColorSnap. This time the lighter outline comes up at Trusty Tan (SW 6087), the darker comes up comes up as either Homestead Brown (SW 7515) or Superior Bronze (SW 6152). The light blue comes up at Vesper Violet (SW 6542). The background comes up as Tricorn Black (SW 6258).

Following.....

Then move a bit further from white toward beige, and the white subway tile will pop. A bit of contrast here is your friend. If it does not look like you tried to do white and just missed, it will look much better.

#2