Since the beginning of intercollegiate athletics at UNC in the late nineteenth century, the school's colors have been blue and white.[191] The colors were chosen years before by the Dialectic (blue) and Philanthropic (white) Societies, the oldest student organization at the university. The school had required participation in one of the clubs, and traditionally the "Di"s were from the western part of North Carolina while the "Phi"s were from the eastern part of the state.[192]