White signifies the innocence and purity of a beginning student that has no prior Taekwondo knowledge.
Yellow signifies a plant's recognition of its dependence on the sun for growth and the earth from which the plant takes root. Accordingly students acknowledge their dependence on Taekwondo as his/her foundation of knowledge is being started.
Green signifies growth, the same way a plant breaks through the soil, ready to reach it's full potential. At this stage, the student's Taekwondo skills beginning to develop.
Blue signifies heaven and represents a plant reaching towards the sky, as the Taekwondo training progresses.
Red signifies danger or blood, and cautions the student to exercise control while warning the opponent to stay away.
The opposite of white; it symbolizes no fear of the dark. It also signifies maturity and proficiency in Taekwondo. There are nine degree (Dan) of Black belt.