The background wall is Baojing orchid, the sofa is gray, what color curtain is used

Gray with beige is also good.

Don't choose a pale yellow sofa for a pale yellow wall. It is recommended that you choose a sofa with a dark purple color. It can be harmonized with the brown color and does not look abrupt under the pale yellow wall, if you don't like purple, flax and jujube are good choices. >>>More

I suggest you make your TV background gray with a black and white trimmed coffee table. >>>More

I don't know why, but when you say this, I think of chocolate

Brown or silver-gray curtains, the coffee table is best with glass, the TV cabinet can be black, white is OK, in fact, it depends on how to match. It's best to focus on colorless or brown, and don't choose too bright colors, otherwise it will look messy.