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 Debate rages over color of dress photographed in rare light Is the dress blue black or white gold? Body Worlds Amsterdam 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 The Dress white & gold or blue & black? Everything else Quarter To Three Forums