Matthew 27:28

28. A scarlet robe A kind of round cloak, which was confined on the right shoulder by a clasp, so as to cover the left side of the body, worn by military officers and called paludamentum. Those of the emperors were purple. This cloak or robe, called by Matthew scarlet, is by Mark called purple. The two colours blend into each other, and the words are interchangeable. The scarlet dye, however, was made from a shrub; the purple from a shell-fish.