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 Woman discovers the iconic 'Optical Illusion Dress' that went viral in 2015 at yard sale Times of India Dress colour mystery solved? Expert says we're ALL RIGHT and here's why The Mirror The actual dress was black and blue. The confusion came from how lighting and color perception tricked people's brains, making some see it as white and gold. It became a viral example Blue or Gold? #THEDRESS. The Dress by Vicky Chen Clear as Mud Medium Piaget 'Opal' White Gold Dress Watch Analog:Shift