You should post this on the discussion side, for better response. This side is for photos. Also ask the professionals at SW. Good Luck

Simple White is red hue family. A hint of pink doesn't surprise me. But Shale is right there in the red to yellow-red hue family neighborhood too. Which is why Simple White was a contender. Are you testing it on the ceiling? Once you turn color from vertical to horizontal above your head this thing called 'flop angle' kicks in and it does change how the color is perceived. The angle strips chroma so the color looks less colorful and more gray and it also appears darker in value. The only other idea is yet another color - Incredible White SW 7028 which is about the same chroma (amount of colorfulness) as Simple White but it's more squarely in the yellow-red hue family so it's less likely it would show as pink. As far as ordered color systems, Dunn-Edwards the Perfect Palette might be the ultimate. California Paints licenses it because it's awesome. Benjamin Moore is actually one of, if not the most, poorly organized of all the color collections I work with. Again, likely more designer-type opinion as opposed to common sense and logic could be the culprit. i.e. The Affinity deck is marketed that all the colors coordinate. Coordinate is arguable. Rather the colors all have about the same amount of grayness. A tight range or consistent amounts of gray means they match on the aspect of grayness. Doesn't necessarily mean they harmonize. Color harmony is just another way to say color order and vice versa. Matching just one aspect like grayness does not constitute order therefore does not constitute harmony. So, the Affinity collection is just as ineffective as Classic Colors.

Anglophilia- I just linked you to my original post with photos. Now I'm even questioning the Believable Buff- does it look slightly greenish?

the wall color is very yellow. the counters are a cool gray the floors/cabs are a warmer red tone. what are you trying to accomplish ? the one thing that needs to go is the wall color. (or get a diff color countertop) paint the walls a neutral white or some lighter, warmer gray color. (not a blue gray)