The Indiana Hoosiers are the intercollegiate sports teams and players of Indiana University Bloomington, named after the colloquial term for people from the state of Indiana. The Hoosiers participate in Division I of the National Collegiate Athletic Association (NCAA) in 24 sports and became a member of the Big Ten Conference on December 1, 1899. The school's official colors are cream and crimson. Indiana has two main rivalries including in-state, with the Purdue Boilermakers (see Indiana–Purdue rivalry), and a border rivalry against the Kentucky Wildcats (see Indiana–Kentucky rivalry).