Exodus 28:31-34
28:31 “You are to make the robe of the ephod completely blue.
28:32 There is to be an opening in its top in the center of it, with an edge all around the opening, the work of a weaver, like the opening of a collar, so that it cannot be torn.
28:33 You are to make pomegranates of blue, purple, and scarlet all around its hem and bells of gold between them all around.
28:34 The pattern is to be a gold bell and a pomegranate, a gold bell and a pomegranate, all around the hem of the robe.