Work Outfit Idea: The Little Black Sweaterdress, Take 2! Glamour How Does The Blue And Black Dress Illusion Work What colour is the dress? Explained Spring Blue Workwear The Docket 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 Truth About the Dress: Black and Blue Explained