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 Optical illusion renews blue and black dress debate nine years on Express.co.uk Internet debates that blue dress (it is blue, right?) The Seattle Times Color Dress Black Blue Yellow White Dress Famous Blue Gold White Outfit Royal Blue And Gold Optical illusion renews blue and black dress debate nine years on Express.co.uk