I would find an area rug that I loved and goes with the sofa first, then the chair colors can be chosen from there.

Whose flooring is this?

Yes start with the area rug and go from there.

We have no concept of what style you are going for so there is no end to the sofas that could work with that flooring.

are the floors down? the room painted?

send a picture of the room.

we don't know what your style is, or what the layout is going to be. you can't just pick our furniture on color

I like the sofa. you need a nice neutral area rug though.

you like any of these?

this one is a bit more rustic boho:

maybe a bit more modern/classic

a bit mcm

boho

Lighter cream chairs, cooler color elements (rug/pillows)

with the charcoal jute rug, you could bring in some of the elements in the next few pics

the black w/the leather always looks good

this one has darker walls, but it has the black light, metal leg wood table, and a charcoal/gray area rug

blues always look nice w/the leather

if it's more of a bluish gray, you could go this direction

this is also a nice alternative. leather chairs/pouf/pillow/soft gray/white sofa/rug, and warm wood console for the tv or whatever.

if you already have the sofa, you could do just about any color for your accent. here they did a nice sage-ish green and a jute rug

Those are beautiful options, Beth.

If you don’t plan on having a tug and just want chair color suggestions, you can also look at chairs with print upholstery in colors you like. If the print has some cognac in it, almost any color can work. A print can also work if you do plan on having a rug, but the coordinating is a little trickier.

Okay these are a little whacky and I’m not actually suggesting any of them, but just examples of colorful prints which could work. I just looked on Anthropologie because I knew they always have lots of prints.

Love this hreen with your sofa color:

Navy looks gorgeous with cognac.

Oly, I actually like this one

with these darker elements like the jute rug, the velvet pillows, the black/white prints

and maybe some of these other elements. she's doing a white wall, so it's fine to have the dark elements. Plants are a must!