Team Logo. The Charleston Royals were a team in the South Atlantic League. They were the Low-A affiliate of the Kansas City Royals. In 1985 they changed their name to the Charleston Rainbows. Retrieved from "https://prosportsteams.fandom.com/wiki/Charleston_Royals?oldid=10279" Categories: Former SAL Teams Teams in South Carolina Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.