Remember when the internet went absolutely nuts on the colour of a dress? The dress was blue and black. The original viral poster, Caitlin McNeill, later said it was a black and blue dress Color Of 'The Dress' Debate: White & Gold Or Blue & Black Twitter Decides Hollywood Life Why nobody could agree on the color of that dress on X Glitter Illusion Off the Shoulder Rose Gold A line Gown 7029 Sparkly Gowns 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