It all depends largely on the natural light your room has. If it is abundant, you can choose almost any color; but if it is scarce, you must be careful. A good option is toasted tones; although it may not seem like it, they are very suffered colors. Anyway we recommend a washable upholstery, even better if the sofa is removable and a fabric that can be put in the washing machine. If you want some color, you can place one or two armchairs, depending on the space, and upholster them in an intense tone, for example, red, and coordinate it with cushions of this same tone on the sofa.