Use a non sanded grout to protect both the marble and the grout from discoloring too much.
White marble tile with white grout.
White grout is a risk in bathrooms though as everyone mentions.
Grout color for carrara marble banyo carrera marble tile floor white carrera marble tile in shower tech silverado grout color pebble that hampton carrara marble backsplash grout color with carrara bianco marble.
I went with tec standard white grout and it came out very yellow or antique white against the tile.
With white you ll also see more staining from water.
If you re tile is white then go with white grout but if your tile isn t white and you can t match it exactly then white will just look awful.
Jules we just had white marble flooring installed with black granite tile in a checkerboard pattern.
Especially when looking at it in the daylight.
The contractors did an amazing job of tile placement and we ended up ordering more marble tiles than planned because some of the ones we got were chipped or had a spot that looked like dirt etc.
It will contrast even more than a darker shade because white reflects a lot of light.
For anyone checking back on this i am having a new house built and had a carrara marble 3x6 subway tile backsplash put in the kitchen with absolute black granite.
Test marble thoroughly with dark grout by.
My vote is white it will keep the marble looking pristine and will darken a bit over time matching the look of natural carrara quite well.