'Blue' in the Bible

who were clothed in purple, governors and officials, all of them attractive young men, horsemen riding on horses.

“Your sail was of fine embroidered linen from EgyptSo that it became your distinguishing mark (insignia);Your [ship’s] awning [which covered you] was blue and purple from the coasts of Elishah [of Asia Minor].

They traded with you in choice fabrics and garments, in clothes of blue or violet and embroidered work, and in [treasures of] multi-colored damask and knotted carpets bound with tightly wound cords, which were among your merchandise.