The name Indigo is derived from the Greek word "indikon," which means "from India." It refers to the deep blue color that was extracted from the indigo plant and used as a dye. The indigo plant was cultivated in ancient India and the dye became an important trade commodity, spreading across the world through various trade routes.

Indigo as a given name first appeared in the late 19th century, likely inspired by the growing popularity of the color and its association with spirituality and creativity. The name gained traction in the 1960s during the counterculture movement, where it was embraced as a unique and unconventional name.

One of the earliest recorded uses of the name Indigo was in 1894, when Indigo Williams was born in the United States. However, the name remained relatively rare until the late 20th century.

Throughout history, several notable figures have borne the name Indigo. Indigo Girls, formed in 1985, is a Grammy-winning American folk rock duo consisting of Amy Ray and Emily Saliers. Indigo Bunting, born in 1974, is an American actress known for her roles in films such as "Scanners" and "House of the Dead."

Indigo Williams, born in 1984, is a British actress best known for her role in the television series "Babyfather." Indigo Roth, born in 1989, is a German singer and songwriter who has released several albums and singles.

Indigo Marie, born in 1986, is an American model and actress who has appeared in various television shows and films. She is also known for her advocacy work in promoting body positivity and self-love.