love the blue chairs!

I do question the SW Cyberspace. It's too gray/graphite not defined enough for longevity.

Why not a deep rich Navy? SW Navel.

I think it is too cut up for wallpaper to have any great appeal.

Love a light area rug under the chairs, but it needs to fill the space so the chairs have another foot or so behind them. The wood floor is a nice contrast.

Keep the sheen down, regardless of the color you choose, you don't want any hot pots.

Thank you Lyn, appreciate your comments!
I will look at the SW Navel.

***EDIT

Forgot to add Cyberspace 7076 sample against bar cabinets.

These are solid color wallpaper that only add texture to the walls.

I don't think the rectangular mirror is working for this space. I understand the need for some reflection, but perhaps a rounded mirror would work better.

Paint it. With all those beams, windows and corners, wallpaper means a ton of seams and awkward cuts. Cyberspace is a great moody navy-charcoal and the onyx bar will glow against it. Do the walls in a matte or eggshell finish, keep the trim and beams consistent, and save wallpaper for a small moment like the bar back wall or a powder room if you still want pattern.

With all those beams, windows and corners I'd paint rather than paper and let the dark color do the drama. If Cyberspace reads too flat against your bar sample, look at a deeper ink blue like SW Naval or BM Hale Navy. Either one will pick up your blue chairs and look gorgeous next to a backlit onyx bar. Keep it matte or eggshell so the walls look velvety, not shiny.

If you still want texture, try a solid grasscloth on just the wall behind the bookcases, where the picture lights will graze it. Then paint the ceiling a few shades lighter in the same family so the room still feels lifted. Look at big swatches at night with the bar lit before you decide.

I'd go with a lighter blue. You can do a lighter, slatey blue, like windy blue.

Paint it. But not that Cyberspace -- a very depressing, battleship grey on my monitor. If you want blue, a rich navy would be a much better choice.

Jill Seidner Interior, thank you! Will get samples of the 2 blues you suggested.

What a marvelous space. We had a billiard table in our living room for many years. It kept guests busy while I put the finishing touches on dinner, and all generations can play together, so we knew our teenagers’ friends. I would encourage wipeable and scrubbable surfaces throughout the room because cue chalk goes everywhere. The beautiful hardwood and incredible backlit onyx give all the pattern needed. So: eggshell (at least) paint for the walls; don’t use wallpaper because a cue on a forceful backstroke can tear or streak it. I agree with Jill about wanting a velvety contrast with the onyx, but you might consider eggshell in the bar area and satin everywhere else. I think the room needs a cue rack. And I know you didn’t ask, but I’d say a room this spacious deserves a really grand Christmas tree, perhaps on the other side of the fireplace, for visual balance and to avoid pool cues.

Thank you! There is a cue rack on the opposite wall of fireplace. It’s a fun room!