Do you mean marble versus porcelaine tile?

Is there a base trim there? Is it some sort of rubber base or ceramic? I've attached a base I think would look nice, it is taller and has some detail. I also attached a door casing that is wider but clean lines. White trim always works. Compare your white to your floor tile, there are hundreds of versions of white- yellow white, grey white, beige white, greenish white, you get the idea. Try and stay in a similar feel. If your floor has a grey feel, look at more true whites or greyish whites,

I am assuming you haven't finalised your wall colours and colours of any other fixed elements. In case you have finalised your color scheme you would need to see which of these colours blend well or complement with that scheme. Assuming none of this info is available, then you could look at the neutrals which go with all colours. The white tile and the 2 colours at the end would be preferable. If you want color on the floor as well as drama, you can choose from the 2nd options from both sides or even the 1st from left.

Best combo floor and wall ?