The Olympic flag features five colors: blue, yellow, black, green, and red, on a white background. These colors were chosen because at least one of them appears in the national flags of every country that participates in the Olympic Games. The flag was first unveiled in 1914 and symbolizes the unity of the five continents: Africa, Asia, the Americas, Europe, and Oceania. It represents the ideal of sportsmanship and international cooperation through the Olympic movement.