Liturgical colours are specific colours used for vestments and hangings within the context of Christian liturgy. The symbolism of violet, blue, white, green, red, gold, black, rose and other colours may serve to underline moods appropriate to a season of the liturgical year or may highlight a special occasion.
There is a distinction between the colour of the vestments worn by the clergy and their choir dress, which with a few exceptions does not change with the seasons of the liturgical year.
In the Roman Rite, as reformed by Pope Paul VI, the following colours are used, in accordance with the rubrics of the General Instruction of the Roman Missal, Section 346.
On more solemn days, i.e. festive, more precious, sacred vestments may be used, even if not of the colour of the day. Such vestments may, for instance, be made from cloth of gold or cloth of silver. Moreover, the Conference of Bishops may determine and propose to the Apostolic See adaptations suited to the needs and culture of peoples.
Ritual Masses are celebrated in their proper colour or in white or in a festive colour. Masses for Various Needs, on the other hand, are celebrated in the colour proper to the day or the season or in violet if they bear a penitential character. Votive Masses are celebrated in the colour suited to the Mass itself or even in the colour proper to the day or the season.
Some particular variations:
Blue, a colour associated with the Virgin Mary. While blue vestments are common in some Eastern churches, in the Latin rite, blue may only be used pursuant to a special privilege granted. The permission, sometimes called "cerulean privilege", is of two kinds: one pertains to particular Marian shrines and specifies when blue vestments may be worn. The other type of permission is that accorded to various countries. An apostolic indult was granted for the feast of the Immaculate Conception and its octave as well as for votive Masses and Saturdays, when the Office the Immaculate Conception is prayed and on Marian feasts where there is a related custom.