Chapter VI-D. Vestments
297. In the Church, the body of Christ, not all members have the same function. This diversity of ministries is shown outwardly in worship by the diversity of vestments. These should therefore symbolize the function proper to each ministry. But at the same time the vestments should also contribute to the beauty of the rite.
298. The vestments common to ministers of every rank is the alb, tied at the waist with a cincture, unless it is made to fit without a cincture. An amice should be put on first if the alb does not completely cover the street clothing at the neck. A surplice may not be substituted for the alb when the chasuble or dalmatic is to be worn or when a stole is used instead of the chasuble or dalmatic.
299. Unless otherwise indicated, the chasuble, worn over the alb and stole, is the vestment proper to the priest celebrant at Mass and other rites immediately connected with Mass.
300. The dalmatic, worn over the alb and stole, is the vestment proper to the deacon.
301. Ministers below the order of deacon may wear the alb or other vestment that is lawfully approved in each region.
302. The priest wears the stole around his neck and hanging down in front. The deacon wears it over his left shoulder and drawn across the chest to the right side, where it is fastened.
303. The cope is worn by the priest in processions and other services, in keeping with the rubrics proper to each rite.
304. Regarding the design of vestments, the conference of bishops may determine and propose to the Apostolic See adaptations that correspond to the needs and usages of their regions. 
305. In addition to the traditional materials, natural fabrics proper to the region may be used for making vestments; artificial fabrics that are in keeping with the dignity of the liturgy and the person wearing them may also be used. The conference of bishops will be the judge in this matter. 
306. The beauty of a vestment should derive from its material and design rather than from lavish ornamentation. Representations on vestments should consist only of symbols, images, or pictures portraying the sacred. Anything out of keeping with the sacred is to be avoided.
307. Variety in the color of the vestments is meant to give effective, outward expression to the specific character of the mysteries of the faith being celebrated and, in the course of the year, to a sense of progress in the Christian life.
308. Traditional usage should be retained for the vestment colors.
a) White is used in the offices and Masses of the Easter and Christmas seasons; on feasts and memorials of the Lord, other than of His passion; on feasts and memorials of Mary, the angels, saints who were not martyrs, All Saints (November 1), John the Baptist (June 24), John the Evangelist (December 27), the Chair of St. Peter (February 22), and the Conversion of St. Paul (January 25).
b) Red is used on Passion Sunday (Palm Sunday) and Good Friday, Pentecost, celebrations of the Lord's passion, birthday feasts of the apostles and evangelists, and celebrations of martyrs.
c) Green is used in the offices and Masses of Ordinary Time.
d) Violet is used in Lent and Advent. It may also be worn in offices and Masses for the dead.
e) Black may be used in Masses for the dead.
f) Rose may be used on Gaudete Sunday (Third Sunday of Advent) and Laetare Sunday (Fourth Sunday of Lent).
The conference of bishops may choose and propose to the Apostolic See adaptations suited to the needs and culture of peoples.
309. On solemn occasions more precious vestments may be used, even if not of the color of the day.
310. Ritual Masses are celebrated in their proper color, in white, or in festive color; Masses for various needs and occasions are celebrated in the color proper to the day or the season or in violet if they bear a penitential character, for example, ritual Masses nos. 23, 28, and 40; votive Masses are celebrated in the color suited to the Mass itself or in the color proper to the day or season.