ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive 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 10 years ago, a simple photograph of a dress sparked a global debate unlike anything seen online before. Posted in 2015, the image caused people to argue intensely over whether the dress White and gold dress: Here's the science behind why some people see blue The Mirror Blue Gold Formal Ball Gown Dress with Embroidery and Bow eBay