Blue. Just blue, not sky, azure, navy, cobalt, steel, or powder. Royal? Perhaps, but mostly just blue...like the color of the blue crayon. I was looking for some blue tulle for Stella's Halloween costume, and I just couldn't find the color I was looking for, just blue. I ended up with something a little more turquoise, but it will still be super cute. Don't be scared, Jeremy's sister helped me make it, so not only will it stay in one piece, but it also might just be recognizable with minimal hot glue involved.