Platinum is more like Mapei's warm grey. The Greystone would look nice with the floor color.

Mapei is a good brand -- did you contractor say why he didn't like it??

Also, maybe this should be obvious, but are you talking about a grout color for the walls or for the floor? A good way to get informed advice is to include the sample rods in a photo, so we can judge them relative to the other finishes in your actual lighting.

Hi Jane, what color did you end up going with? I'm having the exact same problem. I, too, like the Warm Gray. Our walls are Anew Gray (SW) and we're doing white subway tile backsplash. I'm leaning toward Platinum or Cape Gray. Would love to see pics of your finished product! Thanks in advance!

Thanks for replying and posting pics! It looks great! Ours is going in next week. We decided on Platinum. I hope we like it. :)

@jmdilapi. I am also trying to pick grout color for white subway tile. The platinum looks great! Provides more contrast than I thought (which I like but don’t want too dark). Is the Platinum you used from Custom building products? Doesn’t look too silver in photos - is it? Thanks!

Thank you so much! Very helpful.

Jane Bred, what color grout did you end up using on the floor tile? Platinum too? It looks darker. Love your project!

Yes, i’m Wondering the same thing...grout color on black hex tiles! Pls share. Bath looks amazing!!!! ❤️

Thank you! Is your black hex tile from the tile shop?

Lowe’s carries mapei again I just bought warm gray for my 24x24 tile I’m getting installed in a lot of areas

We are doing our kitchen backsplash with beveled edge White subway. Our quartz is MSI Laza I think finally nailed it down Warm Gray grout by Mapei I was deciding between that and Smoke Gray. My concern was warm Gray looking to beige did anyones grout read that way after install?

Mapei Grey has IMO a Taupe/Beige undertone especially if you compare to an actual grey color. Platinum has IMO a very slight bluish undertone but reads more grey when compared to Warm Grey. I just did two sample boards using both grouts with a Grey Penny Tile and I like the Platinum better however I really want Polyblend Cape Grey which is a very light grey but Homedepot is having a hard time shipping things due to the pandemic so am forced to choose between the other two.