Exodus 28:4-6

4These are the garments that they are to make: a breastplate, an ephod, a robe, a tunic of checkered work, a turban and a sash. They are to make holy garments for your brother Aaron and his sons, so that he may minister to Me as a kohen.

5They are to use the gold, blue, purple, scarlet and fine linen.

6“They are to make the ephod of gold, blue, purple, scarlet and finely twisted linen, the work of the skillful craftsman.