generally associated with purple ( Exodus 25:4 ; Exodus 26:1 Exodus 26:31 Exodus 26:36 , 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 ( Exodus 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 ( Numbers 4:6 Numbers 4:7 Numbers 4:9 Numbers 4:11 Numbers 4:12 ). (See COLOUR .)
M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition,
published by Thomas Nelson, 1897. Public Domain, copy freely.
[N] indicates this entry was also found in Nave's Topical Bible
Bibliography InformationEaston, Matthew George. "Entry for Blue". "Easton's Bible Dictionary".