The Japanese term for karate belt is "obi". In karate, the obi is used to indicate the rank of the practitioner. The color of the obi varies depending on the rank, with white being the color for beginners and black being the highest rank. In some styles, students wear white belts until they receive their first dan rank or black belt, while in others, different colored belts are used for different kyū grades. Here are the colors of the obi for some of the intermediate karate ranks:
- Fourth Kyu (Yonkyu): Green Belt
- Fifth Kyu (Gokyu): Blue Belt
- Third Kyu (Sankyu): Purple Belt
