The Internet is obsessed with one question: Is this dress gold or blue? In 2015, a photograph of a dress went viral, dividing viewers over whether its colors were blue and black or white and gold. This optical illusion highlighted differences in human color perception Why did some people see a gold and white dress? Our Brain What Colour Is This Dress? (SOLVED with SCIENCE) 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 The Dress: Color debate rages on the Internet East Bay Times