Exodus 28:5-6, 15, 33

They are to use the gold and the blue and the purple and the scarlet fabric and fine twisted linen [from the people], and they shall make the ephod of gold and blue, purple, and scarlet fabric and fine twisted linen, skillfully woven and [beautifully] worked.

“You are to make a breastpiece of judgment, the work of a skilled and talented craftsman; like the work of the ephod you shall make it: of gold, of blue, purple, and scarlet fabric and of fine twisted linen.

You shall make pomegranates of blue, purple, and scarlet fabric all around its hem, with gold bells between them