We transitioned from/to similar colours. Our family room is Revere Pewter which we love. We painted the hallway/entry and living room Edgecomb Grey which is right beside RP on the colour strip. It transitions beautifully from RP and EG is a lovely backdrop for our furnishings and artwork. It is light, warm, and modern without being too grey. Our entry is a high ceilinged foyer as well. Good luck.

Neutral colors are a mix of different colors, so depending on what you have next to your neutral the neutral color appears to pink or blue or green or yellow. It really isn't a foreign concept to most women, we just haven't thought about paint color the same way we look at makeup and clothing. My sister has an olive skin tone and medium brown hair, I have an ivory skin tone and dark hair and my sister in law has blond hair, blue eyes and a fair golden skin tone. We don't look good in the same colors. Your home is full of colors. What looks good next to my purples and purple reds and smokey teals won't look good next to my sister's greens and golds and orange reds or next to my sister in law's cornflower blue, peach and butter yellows. We each had to pick neutrals that went with the decor and flooring and woods that fill our home. Can you imagine my purples, reds and teals with a moss green neutral a yellow tan or is it better with a taupe that has slightly purple undertones? Below is a demonstration of how neutrals can look very different based on the colors around them. Both sections have one color in the center of each block. It is the same color in each block all the way across the page, yet the color appears more pink or green or yellow or blue depending on the color next to it. If edgecomb gray is picking up purple you probably have yellow undertones around it. Edgecomb gray is a pretty solid neutral with just a hair more pink and less green than revere pewter. Baby Fawn or tapestry beige may work nicely - just a bit less pink/purple undertones and a hair more yellow. I would recommend that you pick your flooring before picking the paint color because it could also change the perceived wall color. If you can gather together samples of the colors that are staying and lay them out on a white sheet in natural daylight (I like to do this outside on a clear day) and look at a bunch of neutral swatches next to the colors you will start seeing the patterns. More yellow looks better or grayer looks better a little more green looks better.

Update: I visited our local SW store and came home with sample swatches from the Emerald Designer Collection, including Grey Heron. Indeed, it looks really close to Agreeable Gray (great suggestion dianeski!) I question if it has a touch more green showing up, but might be imagining it. Ultimately, I can't bring myself to use one of those colors for a large paint job without having a bigger sample—which are still unavailable—and I refuse to buy a "test" gallon. It's a bummer. SW Lunar Lite 9546 was also interesting. Those colors have a lot of potential! Also, our painter called and apparently is ready to start next week! A good two months sooner than projected, lol. I am now back to looking at SW Crushed Ice (LRV 66) and BM Shoreline (LRV 68). I did not previously mention Shoreline. It's a sample I tried a while back that someone had recommended. I had ruled it out for fear of it flexing too gray/lavender/pink in certain lighting. BUT. In our current southern light, it's a lovely, pale, barely there gray with a softness to it. I think either of these colors could work and compliment the BM Stonington Gray of our living room. It's a matter of figuring out what I can live with as the lighting/seasons change, because the look of the paint color will flex no matter what. Right now, our home is at its peak brightness, but everything looks gloomier during snowy Michigan winters—despite southern and eastern light. I recently mentioned liking BM Classic Gray and SW White Heron (and still do), but on brighter days, they have looked too washed out and blended in with our neutral upstairs carpet (though foyer floors are dark wood). Obsessing over this is ridiculous (though also a distraction from the serious current issues in our world). I'm sure any of the colors mentioned will look better than the dark, dirty taupe currently on our walls, lol. It's just a lot of money and I after hating the current color for so long, I want to get this right!

Have you checked out BM Pale Oak?