Here is another wonderful blue. This one is called Williamsburg Blue Dark. It is an Oriental Background color formula from Prisms # 1 (66 Spots and 35 Oriental Backgrounds), a dye book from the Dye Divas Claire deRoos and Nancy MacLennan. Click on the photo to see the great depth of color.It is rich and luxurious. Another exquisite color for use in Kilims.