you are replacing the rug, right? I'd go with something light that will compliment the new rug.

Personally I think both options could look great in the space. And it really comes down to a personal preference. I think a blue sofa can be absolutely stunning and quite a statement if you like blue and would be happy with it for the lifetime of the sofa. Can you post pictures of the sofa and the swatches you're considering? Sometimes a specific sofa shape lends itself to a specific color.

My 2 cents: Sofas are not something you buy often so I would go neutral and add throw pillows for color. Make sure to get stain protection so your sofa fabric lasts longer. If you want a statement piece with a bold color, do that with an armchair or ottoman. That said, is West Elm your only option? The quality of their construction, in general, is not the highest compared to Crate and Barrel, for example. Because a good sofa is such a long-term investment, I would recommend paying for good quality construction. Good luck!

It will most likely depend on how you want to decorate the space and what your accent colors will be. If you choose a blue sofa, then the current rug in the photo would work well as long as the blues go together. However if you want the freedom to change up accent colors easily then the grey would be a better base color. Below are a few of our designs which might help you in your decision.

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