The Science of Why No One Agrees on the Color of This Dress WIRED Remember when the internet went absolutely nuts on the colour of a dress? The dress was blue and black. The original viral poster, Caitlin McNeill, later said it was a black and blue dress Spaghetti Straps Purple Sequin Short Homecoming Dress VK23092106 Vickidress This explains how the blue black white gold dress illusion was possible. But it doesn't explain why some people saw it one way and some saw it the other, and no one seemed to see