This explains how the blue black white gold dress illusion was possible. But it doesn't explain why some people saw it one way and some saw it the other, and no one seemed to see In 2015, a photograph of a dress went viral, dividing viewers over whether its colors were blue and black or white and gold. This optical illusion highlighted differences in human color perception Light Blue Long Sheer Sleeves Embellished Gown 220520 Jovani Light Blue Halter Neck Glitter Dress Elegant Sequin A Line Evening G WonderlandByLilian Opticalillusion Blue Black and Gold Dress Side by Side TikTok Spaghetti Straps Backless Blue Lace Prom Dresses, Open Back Light Blue jbydress