What else is going on in the room? Wall color, for instance?

Sherwin Williams agreeable grey !

Navy sofa with coral and other shades of blue accent pieces.

Do you have a color scheme on the outside of your home? What is the style of your home?Is your front door painted? I would personally favor a cream sofa and bring in color with kilim pillows in reds and blues. With a neutral couch you can always change up the look inexpensively with different accessories.

Whitish

The rug is neutral enough that you can make pretty much anything work. I would just find a couch that you like.

White and without seeing the space that is all I can offer. BTW wall colr last thing to choose not letting it rule all the rest of the decisions . I don’t care about the exterior color scheme IMO has no bearing on the interior color scheme. Is this a rental or could you change the carpet for hard flooring ?

Your carpet appears to be a pinky beige. Blues and reds will look best. I would not do yellow or orange colors in a room with this carpeting.

I don’t think SW Agreeable Gray is a good choice. Not all beiges/grays look nice together.