'Blue' in the Bible

White, green, and blue hangings were fastened with cords of byssus and purple to silver rings and pillars of white marble; couches of gold and silver lay upon a pavement of red and white marble, and alabaster, and black marble.

And Mordecai went out from the presence of the king in royal apparel of blue and white, and with a great crown of gold, and with a mantle of byssus and purple; and the city of Shushan shouted and was glad.