Yellow signifies the Earth
from which a plant sprouts and takes root,
as the taekwon-do foundation is being laid.
 

Green signifies the plant's growth,
as the tae kwon-do skill begins to develop.
 

Blue signifies the Heaven,
towards which the plant matures into a towering tree
as training in taekwon-do progresses.
 

Red signifies danger,
cautioning the student to exercise control
and warning the opponent to stay away.
 

Black is opposite of white,
therefore signifying maturity and proficiency in taekwon-do.
It also indicates the wearer’s imperviousness to darkness and fear.