The famous shade of Purple used by New Orleans based company K&B.

K&B (Katz and Besthoff) was a drug store chain headquartered in New Orleans, Louisiana. Founded in 1905, it expanded to have stores in the United States Gulf Coast region until the chain was purchased by Rite Aid in 1997.

Gustave Katz partnered with Sydney J. Besthoff at 732 Canal Street, New Orleans in 1905, and continually expanded through the 20th century to become a regional chain. It was well known for its unique purple color, with everything in the store (signs, cash registers, employee uniforms, etc.) being "K&B Purple". This color became well known as a descriptive term in the local lexicon - as one might describe something as "forest green", New Orleanians will still describe a particular shade of purple as "K&B purple."