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 Internet debates that blue dress (it is blue, right?) The Seattle Times Is The Dress blue and black or white and gold? The answer lies in vision psychology Psychology The Guardian Woman discovers the iconic 'Optical Illusion Dress' that went viral in 2015 at yard sale Times of India Is This Dress Blue And Black Or White And Gold? Here's What The Experts Say Optical illusion renews blue and black dress debate nine years on Express.co.uk