This rug is stunning.  It has every possible color somewhere in the pattern so I can't think of any colors, warm or cool, that would clash with it.  Some of the online photos appear lighter than others -- I would say it's an exact match to the darkest one.  I had to send it back because it was too dark in our particular space.  We don't get much natural light so it almost read like a solid dark color depending on vantage point, too hard to see the beautiful colors & textures.  But the quality was great for the price, the rug laid perfectly flat after only 10 minutes and was really soft to the touch.  I bought the recommended rug pad which made it feel plush.  I highly recommend this rug!