The primary color used in the flag of Japan is red, which appears in the form of a simple circle (representing the sun) on a white background. This design symbolizes Japan's nickname, "The Land of the Rising Sun." The flag, known as "Nisshoki" or "Hinomaru," has deep cultural and historical significance as it represents purity, honesty, and hope associated with the sun. The flag's design is minimalist but powerful, reflecting Japan's rich cultural heritage and its people's connection with nature. The flag is prominently displayed during national holidays, events, and international representations of Japan, fostering national pride.