The belt color signifies each students level of training and proficiency. In order to progress to the next belt colour, the student need to undergo a physical test (ITF Grading), which becomes increasingly more complex and difficult as they progress to higher ranks.
Signifies innocence. No previous knowledge of Taekwon-do.
Signifies the earth from which a plant sprouts and takes root as the foundation of Taekwon-Do is being laid.
Signifies the plants growth as the Taekwon-do skills begin to develop.
Signifies the sky and the heavens, towards which the tree grows as Taekwon-do training training progresses.
Signifies danger, cautioning the student to exercise control and warning an opponent to stay away.
The opposite of white, therefore signifying a maturity and proficiency in Taekwon-do and the holders imperviousness to darkness and fear.