Hi There! I personally wouldnt mix these two. We just installed a similar countertop and the shade of the background and the veins are so rare that I cant find anything that will look good on the backsplash. Im stock. I will attach a couple of photos for your reference. I think its risky to assume that the whites on both stones will match (even though it might feel ok when you look at samples). I hope it helps Good luck on the first photo the side wall and the top cabinet is white cabinet by Adornus

Here is the good slab installed. Kitchen is still a work in progress. It's a beach house so I am doing it as cheap and as crisp as possible. Cabinets are basic ikea. Second photo shows a close up of the veining.And then bottom photo is a pic of the bad slab (just to see how different it was!)And here you can see how broken the veining looked close up

My bathroom cabinets are in Swiss Coffee. would Eternal Statuario be suitable with swiss coffee ? I dont want to bring out any yellow. I am having a difficult time finding a white quarts to compliment. Any other suggestions?

IMO that quartz does not work with warm colors and certainly not with Accessible Beige next to it. You need to choose 3 colors you think will work then get large poster boards and paint each with 2 coats of the colors . Make sure your lighting is LED 4000K and then see what works with the counters. BTW those counters need to be in before choosing paint colors so a bit backwards but doable.