 The folklore is a part of popular Javanese Panji cycle telling the stories about the prince Panji Asmoro Bangun (also known as Raden Inu Kertapati) and his consort, princess Dewi Sekartaji (also known as Dewi Chandra Kirana).Certain varieties of snails, notably the family Muricidae, produce a secretion that is a color-fast natural dye.The ancient Tyrian purple was made in this way as were other purple and blue dyes.