Liturgical colour

Liturgical colours are those specific colours used for vestments and hangings within the context of Christian liturgy. The symbolism of violet, 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 liturgical seasons.

In the Roman Rite, as reformed by Pope Paul VI, the following colours are used.

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, 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:

The Roman Missal, as revised by Pope John XXIII in 1962, was authorised for use as an extraordinary form of the Roman Rite by Pope Benedict XVI by the 2007 motu proprio entitled Summorum Pontificum. Pope John XXIII's revision of the Missal incorporated changes that he had made with his motu proprio Rubricarum instructum of 29 July 1960. The following are the differences between its rules for liturgical colours and the later rules:

...
Wikipedia