Denver Democratic state Rep. Leslie Herod is working on a bill to prevent businesses and schools across the state from discriminating against people based on their hairstyle or hair texture.
Herod, who is black, said California and New York passed similar laws last year. New Jersey also recently passed a law that banned the practice.
Herod added that a dozen other states are also considering the policy.
Proponents point to stories from around the country of African Americans being targeted by employers or schools for how they choose to style their hair. A survey by advocates for the laws said black women are 30 percent more likely than white women to be made aware of a formal workplace policy regarding hair.