What are the rules for football referee's clothing?

Football referees generally wear black clothing, which is regulated by FIFA. The biggest feature of a football game is that it has a large field, a large number of people, and strong confrontation. The referee must run with the court. If it is not distinguished from the color of the players' clothing, it is easy to be mistaken for players on the court and cause confusion in the game. From the color point of view, black gives a solemn and solemn impression, which is very commensurate with the status of a referee. FIFA also stipulates that if one of the players is in black sportswear, the referee will change to red, yellow or white clothing.