Red, teal, orange, almost any bright color would work. Take your picture with you shopping and look for a rug or throw with the taupe of your couch and drapes in a design you like. If you find a pattern, it should be of a different scale from the drapes. Maybe a stripe or a small floral. The black would actually work, but I think the rug needs more interest.

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decorating with a tan sofa

Anything, including black and white or animal prints.

How about something like this?

https://www.houzz.com/products/loloi-shelton-collection-rug-black-and-ivory-28x77-runner-prvw-vr~23637424

For rugs i'll suggest you to have a traditional cream colored rug with intricate carvings. A lot of rug sellers offer them but make sure you get New Zealand wool made rugs which stands for warmth and durability.

I love the blanket you have now. Why are you replacing it?

Beware of wool rugs, they shed like crazy!

A better picture of more of the room and what else is in the room and surrounding area would be helpful.

I was thinking more of a gray throw blanket! Maybe pair it with some blue pillows? I'm not sure. I like the idea of a cream color rug. This is the whole room besides the tv on the opposite side. The place I'm in right now is around 600 sq feet, I believe? I am moving in one month so the room will look totally different! I knew I wouldn't be living here long so I don't have much decor, I just used what I had around. I am slowing replacing things before I move and that's why I needed some opinions :)

Your selection of items for your room seem a bit random based on this picture. It would be a great help to see more of the room to get a feel for the architecture you're working to complement. Looks like you might be a downtown city dweller with minimal space to work with. Are the ceilings tall? Any trim?

This may not be the right location for a mirror. Always check what the mirror reflects and in this case it appears to be some type of shelving unit. The sofa seems like a nice, neutral choice, but the coffee table seems dated, not so much vintage. The selection of drapes pulls the room in a different direction, but could maybe be mounted to stack more on the wall to make them appear more grand with this window.

Don't know if these accessories complement anything else in the room. Could use some large scale art on the walls and a patterned carpet on the floor.

Since you'll be moving in a month, please wait until you get into your new place before you purchase anything. Will you have a dining room nearby where you'd like to coordinate your living room with dining decor? What look are you going for? Contemporary, traditional, eclectic, country? What colors do you gravitate towards? You really have a blank slate with your beige sofa. Could go in any direction.

I was trying to get things together now, so that way I wasn't spending money all at once. I have a pretty good idea of what my place is going to look like. I was just going for more of a homey feel. Not so much rustic.. but just, comfortable? Laid back? I'm not sure

@beverlyfla Do you suggest changing the curtains? I just needed something on the wall and all I had was that mirror. I am aware it does not look good. I like the way the coffee table looks with the sofa. What do you mean by mounting the curtains?

You can attach the curtain rod, so that more of the drapes will be to the side of the window, i.e. on the wall. This makes the window look larger.

Oh, okay. They are like that, I just have them drawn.