"The Japan Karate Association Seal"

The JKA seal's red and white symbolize the sun and moon. The sun as in YO - brightness. YO signifies the offensive ready stance, or kamaete, ready to strike at any given moment. The moon as in IN - shadow. IN stands for defensive ready stance, where the individual stands a distance away from the opponet's reach but within his own striking distance.

Where there is YO stance, there is IN stance. Both must interact harmoniously. (The sun and moon represent the harmony of mankind and the universe. It also symbolizes the development of our mind and body in Karate-do.)

The sun (red) also suggests a burning flame while the moon (white) is cool and calm, can develop into a fierce force capable of shifting the ocean tides from continent to continent.