I'm trying to get a picture of the fireplace tile!

Do you have furniture already or will you be buying new? You need to decide how light or dark you want the walls. Did you take the pictures at the brightest time of day or do all those windows face south or west so you have a lot of light a good part of the day? If so, this space could easily take a darker color than you're thinking of. Or if you just prefer lighter colors there are plenty to choose from. I'm going to assume your contractor prefers BM since you say your trim is going to be Chantilly Lace. I suggest you look at BM's most popular colors.

https://www.benjaminmoore.com/en-us/color-overview/color-palettes/most-popular-colors

There is no right or wrong answer. Order swatches from Samplize.com of the ones that appeal to you, or paint a sample board. Look at the color in the space and next to your furniture, floors and cabinets. Chantilly Lace is a versatile trim color that will go with almost anything. If you can get the contractor to do it, have them paint one wall with the color you choose and then stop painting for a day or two so you can make sure it's going to look the way you're hoping.

What white on your cabinets? I would use the same on the walls. Or Chantilly Lace in a different sheen on the walls. Choosing different whites and having them GO together is a nearly impossible task. (Case in point: my contractor accidentally used extra white on our doors and pure white on our trim in one room - looks terrible next to each other). Go with the same white.

IMO no white at all this is my fave for a real neutral when clients have to choose wall colr way too early in a new build . It goes with everything and I cut it 25% usually so a hint of color but not too much

Hello and thanks for your response. The painter is using Sherwin Williams so its their version of Chantilly Lace. The back of the house faces Southwest and gets nice light. The diningroom and stairway are to the front of the house and definitely get less light. I tried SW white heron but it looks a little dingy in the front of the house. Here are some pics I found of SWWhite heron. The builder is insisting on flat paint... and I need to make a decision in the next couple of weeks.

Any other colors you could suggest I would appreciate. I guess my concern is it looking good with the white/gray cararra and the warmer fireplace tile on the opposite wall. Here is a pic of some my furniture. I would not put that picture in the room. Your thoughts on just going with Alabaster?

We're doing the SW match of Chantilly lace on the trim, ceilings and base cabinets in a different sheen. I don't want the entire house to be that white.

So we have south facing with a similar floor color, similar cabinets, and similar island (all of our bases are knotty alder stained mission oak, not just the island, but same idea). We chose Hanstone Paros Quartz counters which I guess lean cool but aren't super stark so they work with the warmth of the rest. Our backsplash is a chloe tile. We have extra white trim & cabinets. We chose SW Drift of Mist for the walls. I think it's a lovely color but it IS a color. Warm gray, that leans grayer in north rooms and looks nearly white in our south rooms. Trying to go lighter would've just looked washed out IMO.

Here's what two similar whites look like next to each other. Drift of Mist on the walls. Kind of hard to see it in a photo, but it just looks off in person. This photo is also in a low light room so the DOM looks grayer.

The color expert on this site (Lori Sawaya) mentioned in a previous post that if you want different colors between trim and walls, they need to be separated by a chroma of 0.3 (I think???) to not look like a dirty version of the same paint. Thankfully our contractor painted most of our stuff extra white (this was a happy mistake - we had chosen pure white) - I can tell that the one area with pure white trim (chroma 0.4) looks muddier next to drift of mist (chroma 0.6), while extra white (chroma 0.3) looks better.

ETA Lori's color site if you want to poke around:

https://thelandofcolor.com/

SW Snowbound would probably work. Did you show a photo of your furniture?

"The builder is insisting on flat paint..."

Probably because he wants to spray cheap, builders-grade Sherwin-Williams Painters Edge flat paint. Notice where this paint resides on the SW interior paints gloss chart and read some comments on this paint. In CR's tests, neither SW Duration nor Emerald tested well enough to be recommended. If this were my house, I'd insist on a high-quality drywall primer (e.g., Zinsser Bullseye 123, Kilz) and CR's highest-rated paint (Behr Marquis) in Eggshell (walls) and Satin (trim) even if I had to buy all the paint myself. (I used Ultra Pure White.)

Go with Flat paint on the walls, it has so much depth because the eye has no sheen on which to focus. And there's nothing wrong with SW "builders-grade" paint. CR has very stringent testing and most of us do not put our walls through such tough conditions to worry about it. We have SW flat paint and I have washed it but to be fair it is not Painter's Edge if that is what they are using.

I would not advise SW Alabaster, it can have yellow/green undertones in certain light conditions. We have it and it's very nice most of the time but in the afternoon light it looks like very pale Mountain Dew. Even in full sun on the window sill with the window open...thru the glass even more so. I honestly don't get all the hype about it. I guess SW named it their color of the year once. There are other whites with LRV around 82. Here are some posts on the topic.

https://www.houzz.com/discussions/6318262/sw-alabaster-looks-lime-green#n=13

https://www.houzz.com/discussions/4635565/omg-my-alabaster-white-looks-green-only-on-kitchen-cabinets#n=9

https://www.houzz.com/discussions/6218103/help-sw-alabaster-looks-yellow#n=4

https://www.houzz.com/discussions/5680632/sherwin-williams-alabaster-paint-looks-very-yellow-green#n=38

https://www.houzz.com/discussions/6218103/help-sw-alabaster-looks-yellow#n=4

https://www.houzz.com/discussions/4443906/alabaster-white-cabinets-are-they-too-yellow#n=9

@tracefloyd: Read the comments on SW Painters Edge flat paint.

He probably wants to spray Sherwin-Williams Painters Edge flat paint, which is inexpensive and intended for builders. Read some reviews of this paint and take note of where it falls on the SW interior paints gloss chart. Neither SW Duration nor Emerald performed well enough in CR's tests to be suggested. Even if I had to purchase all the paint myself, I would insist on using a premium drywall primer (such as Zinsser Bullseye 123 or Kilz) and the best paint recommended by CR (Behr Marquis) in the colours Eggshell for the walls and Satin for the trim. The Ultra Pure White I used.

I read those comments and I guess there is a difference in quality. But that doesn't mean the OP will get lousy paint job necessarily. Just trying to be positive. It could be a great paint job, we don't know.