Exodus 28:31
And thou shalt make the cloak of the ephod all of blue.
Exodus 28:4
And these are the garments which they shall make: a breastplate, and an ephod, and a cloak, and a checkered vest, a turban, and a girdle; and they shall make holy garments for Aaron thy brother, and his sons, that he may serve me as priest.
Exodus 28:28
And they shall bind the breastplate with its rings to the rings of the ephod with a lace of blue, that it may be above the girdle of the ephod, and that the breastplate be not loosed from the ephod.
Exodus 39:22-26
And he made the cloak of the ephod of woven work, all of blue;
Leviticus 8:7
And he put upon him the vest and girded him with the girdle, and clothed him with the cloak, and put the ephod on him, and he girded him with the girdle of the ephod, and fastened the ephod on him.