Remember The Dress? The viral blue and black dress was seen as white and gold by thousands of people. As it turns out, the photo that broke the internet 10 years ago Internet debates that blue dress (it is blue, right?) The Seattle Times Optical illusion renews blue and black dress debate nine years on Express.co.uk Here's why people saw the dress differently. 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