ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive Light Blue Knit Off Shoulder Boucle Maxi Dress Nothingbutstyle Green Gold Dress Illusion Science Of 'the Dress': Why We Confuse White Gold With Blue Milly Beaded Fringe Knit Shell Mini Dress Large Remember "The Dress Illusion"? The dress was a viral phenomenon on the Internet in 2015. Viewers of the image disagreed on whether the dress depicted in a photograph was coloured black and blue,