Our design team suggest you use Grout colour 03 Pearl to keep it light and fresh with this warm off white.
For added depth, we recommend using Grout colour 05 Shadow.
Recommended Grout Joints - (We have assumed that your substrate has a perfectly flat and plumb surface, please check with your tiler.)
3mm grout joint. Based on this joint size, 1 bag of grout would cover 3m².