Is the dress blue or gold? The phenomenon originated in a photograph of a dress posted on Facebook in 2015. The dress was black and blue, but the conditions of the photograph so we know the dress was black and blue BUT that's not what i'm here to discuss : r opticalillusions ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive Optical illusion renews blue and black dress debate nine years on Express.co.uk Black And Gold Dress Optical Illusion Color White Blue Dress Illusion Color Illusion Optical Illusion