Embellished Illusion Cap Sleeve Column Gown Mac Duggal So I searched up the black and blue dress : r opticalillusions Short Illusion Dresses & Sheer Illusion Cocktail Dresses ABC Fashion Is it blue and black or white and gold? A #viral optical illusion has been used to test a new #algorithm that delves into differences in colour perception https: t.co Pc9zLOTVxh #thedress #opticalillusion #optical # Here's why people saw the dress differently.