Exodus 27:13-16

13And the breadth of the court on the east side eastward shall be fifty cubits. 14The hangings of one side of the gate shall be fifteen cubits: their pillars three, and their sockets three. 15And on the other side shall be hangings fifteen cubits: their pillars three, and their sockets three.

16And for the gate of the court shall be an hanging of twenty cubits, of blue, and purple, and scarlet, and fine twined linen, wrought with needlework: and their pillars shall be four, and their sockets four.