'Blue' in the Bible

white linen, white cotton, and blue, fastened with cords of fine linen and purple on rings of silver, and pillars of marble, couches of gold, and of silver, on a pavement of smaragdus, and white marble, and mother-of-pearl, and black marble --

And Mordecai went out from before the king, in royal clothing of blue and white, and a great crown of gold, and a garment of fine linen and purple, and the city of Shushan hath rejoiced and been glad;