10 years ago, this dress was posted on social media causing a viral debate on whether it was blue and black or white and gold. The phenomenon revealed differences in human color 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 Black Alessia Romper Washed Brochu Walker XS Washed Black Here's why people saw the dress differently. Vanessa Mooney The Elisabeth Romper Dress Black Satin Dre