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 Gold Sequin White Spandex Halter V Neck Prom Dress White and Gold Pleated Kasavu Saree Dress Mogra Designs White High Low Prom Gown Gold Beaded Pageant Dress 67441 Viniodress White Maxi Dresses: Ivory, Snow White, Eggshell, Pearl, Cream, Off White ASTR the Label The actual dress was black and blue. The confusion came from how lighting and color perception tricked people's brains, making some see it as white and gold. It became a viral example