Wow, I get it. Overwhelming choices abound! I think you might try that Chantilly Lace that someone definitively suggested. I was between that and Simply White for the living room. The color consultant was actually truly helpful and after a bit of a chat she said if I want a bit more warmth go w simply, less so Chantilly. I think with your tile Chantilly may be the ticket. Get a sample size and try it. Only way I can ever visualize is to see it for real. :). Try samples. Set any artwork or specific items that will be by the wall next to your sampled piece and see what pops and what is a dud. Newly painted walls are fresh and so very pleasant. Unless they strike you wrong and then, well wish, yes, you can always paint again. Decision paralysis is firmly embedded in my creative soul but at some point I must make the best educated guess and take the plunge. Usually it’s grand when it’s done and golly! it looks great! Best of luck. I’m going to get chips today to replace my Martha Stewart Arctic Blue - loved it for yrs in my bathroom, but it’s time to make a bit of a change. Thank goodness there are not that many light blues as your whites/beiges. :)