which color curtain will mach with brown wall?
It would depend on the type of room you are decorating and the saturation of the brown. I have a chocolate brown hallway and found that the light blue - almost sea foam blue looked wonderful. But if it were my little girls' room I would do a pink or lime green. In my living room I would do a beautiful print that incorporates the color of my wall as an accent. I suggest taking a paint chip with you when shopping and trust your instincts - they are usually spot on!
blue creme pink my favorite would be creme or blue and than dress things up with silver flower pots
any color you pick would look fine. pay attention to the shade of brown. If the brown is cool then go with a warm color. If the brown is warm then go with a cool color. The trendy colors that are paired with brown in the decorating field right now are Spring Green, Light Blue, Turquoise, Coral, and Salmon
If the wall is a chocolate brown then yes I think the blue would be fabulous. Any color of blue but I especially like the Robins egg blue that is so popular right now but any light blue would work. If the rest of the colors you have going won't work with that then a cream color would also look very nice. Sage green is another option and goes very well with chocolate brown. Certain shades of red would also look nice. It would really help if you could post a picture of your room. Is that possible?