Royal purple, or Tyrian purple, is an ancient dye, or the color of that dye.
Royal Purple may also refer to: Royal Purple (lubricant manufacturer), an American manufacturer which produces lubricants for automotive, industrial, marine, motorcycle, and racing use. Royal purple (color), a shade of purple Royal Purple Yearbook, the official yearbook of Kansas State University Royal purple plant, Strobilanthes dyeriana
See also
Royal Arch Purple