The ranking system in Brazilian Jiu-jitsu is done through a series of colored belts. Each belt represents a level of proficiency. Each belt generally takes between 2 and 5 years of consistent practice to obtain with the exception of Blue belt, which can be obtained within a year of diligent practice.

Adult belt colors (16 and over)
White
Blue
Purple
Brown
Black

Junior belt colors (15 and under)
White
Yellow
Orange
Green