Blue

"Generally associated with purple (Ex. 25:4; 26:1, 31, 36, etc.)." It is supposed to have been obtained from a shellfish of the "Mediterranean, the Helix ianthina of Linnaeus. The robe of the" "high priest's ephod was to be all of this colour (Ex. 28:31)," also the loops of the curtains (26:4) and the ribbon of the breastplate (28:28). Blue cloths were also made for various "sacred purposes (Num. 4:6, 7, 9, 11, 12). (See [71]COLOUR.)"