In the sport of judo, what colour belt is worn by novices?

Andy, i am a trainer or like im a trainer in training for karate And judo so yeah

Yellow belt for novice starting out, I know this as I am a black belt 2nd Dan, white belt doesn’t exist at all in Judo it does exist in Maui Thai as I’ve also got white belt in Maui Thai, 2nd Dan in combat karate and brown belt in BJJ