The True Colors of the Black and Blue Dress Revealed 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 perception so we know the dress was black and blue BUT that's not what i'm here to discuss : r opticalillusions thedress The Australian 18,643 Dress White Gold Blue Black Stock Vectors and Vector Art Shutterstock The bewilderment brings back memories of the blue and black or white and gold dress that went viral in 2017.