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 Black and Blue or White and Gold? How Your Brain Sees 'the Dress' Business Insider Why is it so hard for people to see black and blue?' Salvation Army uses 'The Dress' to talk about domestic abuse Orange County Register Exploring The Color Controversy of The Dress