ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive The dress was a viral online phenomenon in 2015, centered on a photograph of a dress that people disagreed on whether it was blue and black or white and gold. Within a A decade ago, The Dress united and divided us. It couldn't happen now. Poynter 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