Powder Blue Tie Dye Flannel Super Snuggle Flannel Fabric ...- washing powder blue powder room fluorescent powder tracking ,Shop Powder Blue Tie Dye Flannel Super Snuggle Flannel Fabric at JOANN fabric and craft store online to stock up on the best supplies for your project. Explore the site today!44 Shades of Blue Color with Names and HTML, Hex, RGB CodesPowder Blue. Powder blue is a very pale shade of blue. In the 1650s powder blue was primarily used to refer to cobalt glassware that was used in laundering and dying fabrics, until it became an official color name in 1894. Although in the past, the hue on the cobalt glassware had a much darker blue hue to it compared to the paleness of powder blue.