Here's why people saw the dress differently. Shop Elegant Black and Gold Dresses for Women Walmart Fashion white and gold or blue and black?? #blueandblackdress #whiteandgold #opticalillusion #2016 #viral The actual dress was black and blue. The confusion came from how lighting and color perception tricked people's brains, making some see it as white and gold. It became a viral example Explanation of the Black Blue, White Gold Dress High Latitude Style The Science of Why No One Agrees on the Color of This Dress WIRED