Colour bar refers to a discriminatory practice that restricts individuals of certain colours or races from accessing social and economic opportunities. The term is sometimes used interchangeably with racial segregation, which is the division of people based on race. Other synonyms for colour bar include apartheid, discrimination, segregation, exclusion, racism and prejudice. These words all describe the negative treatment of individuals or groups based on their race or colour. In modern society, steps have been taken to eliminate colour bars through affirmative action policies, diversity and inclusion initiatives and education programs that promote tolerance and equality.