part of the problem with the couch color is a) the existence of that carpet and b) its nearly-matching color. if you put down a throw rug over the carpet in front of the couch and got contrast pillows, it might be better. Or you do that, plus slip-cover the couch in off-white canvas. i'm assuming the nice graphic painting hanging above the couch better reflects your taste.

It's too close in tone to your carpet. If you can't/don't want to lift the carpet (hardwood underneath?), then put a contrasting area rug down under/in front of the sofa. A different wall colour and/or non-green accessories would also help.

That looks like a nice couch. You say it's dark green, but it looks like a silvery sage or maybe even olive in the picture. Anyway, if you're starting to hate the color, the first thing you need to do is get that bright green artwork away from it. Almost any color green is going to look totally blaaaaaah in competition with that artwork, so do yourself and the couch a favor and don't make it compete.

Your poor couch is also starting to slump down into the carpet, which is a very similar color. You've got a neutral carpet with a mostly neutral couch. You need a rug or a coffee table, stat!

Get yourself a color wheel. You need some colors that are opposite your green--pink, orange, red, purple, even blues. These will bring in some contrast and a whole lot more interest. Stay away from other greens, especially springy or yellowy greens. You can go for colors in the same muted palate as your couch for a restful, tonal look, or you could go for some bold contrasts and use your couch as a neutral. Just don't go too bright, or your couch might end up looking more grungy than blah. Until you get the hang of pairing colors with it, don't splash out any major $$ on anything that will be difficult to return. Pillows are a good place to start.

Good luck!

slip cover it. and i love the rug on the wall. just bought that and thought about doing the same.

It's not the couch. It's the neutral carpet with the neutral couch. Get an area rug with that neutral couch color and the bright green from the artwork above the couch in it!

Lay down an area rug and paint the walls (if you can) add contrasting pillows and you're in business. No need to ditch a perfectly good couch. Your problem is that you have little contrast!

craiglist it.

The color doesn't go, at all, with the hanging above it, so one of them needs to move.

I second the idea of different pillows and rug.

Do you have a basement?

White canvas drop cloth.

move the artwork and the carpet, paint the wall behind the couch more buttery / less white, get some interesting pillows, you need some lighting next to it - bottom line is you need to get the focus off the couch by surrounding it with other things - a coffee table too.

I agree, the couch doesn't go with the carpet (it just blends in) or the print above it (it's a different tone of green so it clashes) As a quick fix I'd get a contrasting rug, cushions and print as suggested above-perhaps in cream, and perhaps some muted earthy tones in the print. On the other hand, I can't make out what fabric the sofa's in- if it's velour, I'd probably get rid of it/recover.
Good luck :-)

I also have a greenish couch that I quickly started to hate. Because it was expensive (and a sleeper that is too convienent to not have), I put on a black slipcover. I left the back cushions on top of the slipcover, and I've covered all 4 of the matching throw pillows with different covered fabric. The essence of the couch is still there in the two greenish cushions, but it's so much easier to have cohesive style with multiple colors and textures on the couch.