Is it white and gold or blue and black? The truth behind the dress debate. CooperVision so we know the dress was black and blue BUT that's not what i'm here to discuss : r opticalillusions Ten years ago, a photo of a dress posted on Tumblr sparked a massive debate: was it blue and black or white and gold? Millions argued online, and even celebrities joined in. The white and gold dress, and the illusion of free will Felipe Contreras White and gold or blue and black? What colour is the dress? London Evening Standard The Standard The Science Behind the Dress Illusion Eyepic Eye Care