What are you doing for a window treatment?

If I was doing an accent wall (I personally don't like them), I would pick a color out of the curtain.

I would also ditch the tree....

I am not an accent wall person either. To me they look discordant. If you do an accent wall, IMO, I would choose a light color so the accent wall isn't so glaring.

I like accent walls. But to select a color, it really should come out of fabric in the room....either window treatment or the new upholstery....can you post a pic of the fabric?

I can visualize the accent wall is the palest blush of aqua or blue. Once you find your window treatment, then you can decide.

Your room is really pretty, but I can see why you'd want to add some color. Too intense a color is just going to accent how white the other walls are, too pale will not look intentional. In looking for inspiration pics, I noticed the use of an accent wall with very light/white rooms seems to work very well in a contemporary or modern room, but not so well in traditional rooms.

I was going to suggest a wallpaper accent, coordinated with fabric in draperies, so was looking for examples. I wonder if you could do the buffet wall and the right wall (with either an accent paint or wallpaper) and then treat the window wall with coordinating draperies covering most of it? (I think that's the one that connects with the entry). You could extend your drapery rod almost from the corner to a symmetrically balanced place on the left side of the window to provide a wall of fabric, leaving the paint light, which would solve the problem of ending a different color paint (or wall paper) on that wall.

Here is a link that might be useful: Accent walls

I think it's hard to help without seeing the new chair upholstery. Why are you removing chair arms??

with your lovely neutral leaning pattern on your chairs, instead of painting an accent wall a color, i would consider doing a beautiful grasscloth (of course the entire room in grasscloth would be beautiful as well)

if you do decide to go with paint (i think the colors you are leaning toward would work well) i would consider doing the entire room in a more saturated color and nix the accent wall....mostly because the room isn't overly large and i think as an earlier poster said, the one wall with 'color' might look discordant .....agree with the other posters that if you are going to do drapes, you should pick those before you pick out your paint (or wallpaper)

Thanks for all your input! Here is the photo of my new chair fabric. We're getting rid of arm chairs due to the smaller size of the room. Ordered the two end chairs from Carrington court direct & reupholstered the other seat cushions with the same matching fabric.
To be honest I was going to decide on drapes last based on what I had in the room. But I'm decorating challenged so I'll go by what you guys suggested.
So onto looking for drapery ...... any suggestions as to what would work??? The whole front of my colonial has those medium brown/cherry wood blinds. So I think I want to keep those under drapes to keep the uniformity of the exterior look.