I would paint the entire wall, into the kitchen. Or, you could add a vertical molding strip to separate the areas visually, or just stop the paint in a straight line (perhaps where the cabinets start).

The photo doesn't quite show the entire wall, so not sure if this could work, but you might consider doing some molding work like large rectangles on that wall to enhance it, and paint the inner parts the color you're wanting to have there. The current paint would be the outer part and tie into the kitchen. Oh the wonders of an open floor plan!

If I put large rectangles on that wall would it be centered over the couch ? Then where would the mirror go?

You don't have a natural stop point so your hands are tied as far as either committing to the entire wall and going into the kitchen or not doing it if you want it to look "right." For what it's worth you may want to think about putting a painting over the couch instead of the mirror and table lamps that make more of a statement if you are wanting to make more of a statement in this area. And why not carry that cobalt blue onto the sofa with pillows?

Maybe a wainscoting on the sofa wall?

I was imagining like 3 rectangles along the wall. The mirror would need a new home.

I think your room would be better served with art over the sofa that will add the color for your room. Your table lamps are too short.

The table and the lamp height should add up to 58-64" total

What do you think of this moulding behind the couch?

What do you think of this moulding behind the couch that I could paint inside?

You can do great things with paint.

https://www.google.com/search?q=ombre+wall&client=safari&hl=en-us&prmd=ivsn&source=lnms&tbm=isch&sa=X&ved=2ahUKEwicnMSKheTxAhUMM1kFHW9HD14Q_AUoAXoECAIQAQ&biw=1080&bih=684&dpr=2#imgrc=_E8Pa8D8JocUXMthank 

You're going to have problems of where to stop on both ends of that wall. I'd save the accent wall idea for a different day, different room.

no on paint, just find some fabulous art. unless you want to paint that whole wall

What Bev said

I wouldn't care for molding on that wall

Put some poster board up and see how you like that look as that is pretty much what you will accomplish with molding painted inside of it a different color. And the molding example you show would be mostly broken up by your furniture so it won't have the same look as the example. Are you opposed to putting a painting over the sofa and new lamps?

I will definitely get new lamps. I’m not crazy about putting a painting over the sofa.

Could you tell us what you object to in selecting some type of art for over the sofa? Doesn't have to be a canvas.

There are lots of other options to get blue on your walls without painting them.

I like the idea of molding framing the couch area and bringing in another color that way.

The molding idea would be fine if you had a regular doorway on each side, but because your door on the left has a frame, the door on the right doesn't, and the soffit isn't lined up with the door, there isn't a good way to frame out that area. It would look especially bad in a different color. Art would be best. You could frame out a piece of wallpaper you like in a size and shape that would mimic art behind the sofa, slightly oversized like this.

Brooklyn Heights · More Info

What about a color block?

This type of idea doesn't really need a border - just a pleasing dimension..Find a blanket or sheet and try hanging it on the wall and see what you think.

I like this idea. The walls are knock down . Should I skim the wall inside the molding fir paint or wallpaper?

You might want to take blue painters tape and tape out the molding to give you a visual on the wall with your furniture.

Nancy, is the room large that you could pull the sofa away from the wall and have a nice console table there with lamp and art to walk by?

Jackiwskib I don’t have enough space for a table behind the couch. Thank you for your ideas of rectangles. I am going to try and tape it off and see if I like it.

Seven people so far have said it’s not a good idea - including some extremely talented professional designers volunteering their time to help out. Another reason the blue wall doesn’t work is that the space is open concept and the walls in an open concept space look best if they are a uniform color. The space “flows” better that way.

@ginatay124 much of the time, the pros respond with do it if you like it.

Some folks have different visions than others

Its okay.

Tdemonti .. thank you!

I wanted to show all that gave me great ideas how the wall came out. I love the moulding and how it broke up the long wall. Thanks for your help!

You need to post a before and after pic. this looks amazing!

That looks great!!

That looks beautiful! I love how you did the different heights and that you kept the wall color the same inside the molding.