1492: Dress Color explain xkcd 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 The Dress Debate: Science Explains Why Some See Blue And Black And Others White And Gold How I Flipped My Brain's View of the Black and Blue Dress Jeff Greenhouse White and Gold V Neckline Fringe Dress 38847 Jovani