I wanted the same grayed down blue-green and also tried many of the same colors samples you did. I agree with Metromom; look for a chip much grayer than you think you want. I settled on BM 1565 Mount Saint Anne. It's from the old color deck, but both BM and SW had a chip for me to look at. It doesn't look like much on the card, but it's really lovely on the wall. I don't have a picture, but you can search Google and find some posts with images. Sarah

The way the color wheel goes green is the "warmest" of the cool colors and violet is the coolest. The most common theory of warm and color means splitting the color wheel in half and calling half warm and half cool. It's really an oversimplification of color that's not very useful. Perceptually, we don't sense color as a warm and cool continuum from one side of the color wheel to the other. Rather, warm and cool is a spectrum within each hue family. It's more useful, and arguably more accurate, to break out warm and cool in terms that are aligned to how we actually perceive colors. In the case of this color wheel, warm and cool is designated in the context of the human gamut of color - which is all the colors we can see plus colors that can't be seen or made (yet). When we reframe warm and cool in this context, then it's easy to see that there are indeed blues that are warmer compared to other colors in the same hue family (blue). Warm blues, from saturated to grayed, are from about 235° to 252°. Translated to paint colors, warm blues would be colors in this range: CW-660 CHISWELL BLUE, Benjamin Moore Williamsburg Color Collection HC-145 VAN COURTLAND BLUE, Benjamin Moore Classic colors AF-550 AMSTERDAM, Benjamin Moore Affinity colors 2127-50 PIKE'S PEAK GRAY, Benjamin Moore Color Preview

Thank you everyone. I have large paint boards from a craft store. I have 5 different colors painted. One color on each board. I am leaning now towards Harbor Gray or Roycroft Pewter as the Homburg Gray doesn’t have enough excitement for me. Lacks depth of color? Seems too muted green/blue. It’s new construction so have done the best I can to out board in various lights. I want a dark island and Cyberspace is awesome too dark. So down to two above.

You only show three walls of the room, but there's only one where I would worry about a dark blue being too much, and that's the wall with the piano. One wall is all openings and white trim at eye level, and the fireplace wall has the built-ins and trim in white. And really, the piano and mirror take up a lot of eye-level space on that wall. But I agree with Jan that you really need to think about the views. I don't think it all has to be blue, but it needs to work together. I recommend you become familiar with the visualization tools of the various paint manufacturers (I like Benjamin Moore's better than SW's, but YMMV. They are only going to give you a broad idea, so you don't necessarily need to visualize from the same manufacturer you plan to buy from). Use your photos, define various areas (living room, upper hallway, foyer, etc.) and then try out different paint combos.