Liturgical Colors

White

Light, innocence, purity, joy, triumph, glory

Season of Christmas
Season of Easter
Feasts of the Lord, other than of His passion
Feasts of Mary, the angels, and saints who were not martyrs
All Saints (1 November)
Feasts of the Apostles
Nuptial Masses
Masses for the dead (Requiem Masses) when the deceased is a baptized child who died before the age of reason

Note: White is the color of Popes' non-liturgical dress. White can be replaced by Silver.

Red

The Passion, blood, fire, God's Love, martyrdom

Feasts of the Lord's passion, Blood, and Cross
Feasts of the martyrs
Palm Sunday
Pentecost

Note: Red is the color of Cardinals' non-liturgical dress

Green

The Holy Ghost, life eternal, hope

Time After Epiphany
Time After Pentecost

Violet

Penance, humility, melancholy

Season of Advent
Season of Septuagesima
Season of Lent
Rogation Days
Ember Days (except for Pentecost Ember Days)
Vigils except for Ascension and Pentecost
Good Friday

Note: Violet, literally "amaranth red," is the color of Bishops', Archbishops', and Patriarchs' non-liturgical dress

Black

Mourning, sorrow

All Souls Day
Masses for the dead (Requiem Masses), except for baptized children who've died before the age of reason

Rose

Joy

Gaudete Sunday (Third Sunday of Advent)
Laetare Sunday (Fourth Sunday of Lent)

Gold

Joy

Gold can replace white, red, or green (but not violet or black)