Several major religious traditions use colour in formal, documented ways — from the Roman Catholic Church's codified liturgical colour calendar to saffron-robed monastics in Theravada Buddhism — each with its own distinct history and internal variation, not a shared system.
The Roman Catholic Church uses a formally codified sequence of liturgical colours through its calendar — violet for Advent and Lent, white or gold for major feasts, red for Pentecost and martyrs, green for Ordinary Time.
Roman Catholic
Saffron and ochre-toned robes are traditionally worn by monastics in Theravada Buddhist traditions of Southeast Asia and Sri Lanka; Mahayana traditions in East Asia commonly use different, darker robe colours instead.
Southeast Asia and Sri Lanka
A specific blue dye (tekhelet) is referenced in Jewish religious text for ritual fringes, and white is traditionally associated with purity in Jewish ritual dress including the tallit prayer shawl.
Jewish
Each of these is a separately scoped, separately sourced practice — shown together for comparison, not because they share one underlying meaning.
Roman Catholic liturgical colours
Stable, widely documentedRoman Catholic liturgical tradition · Roman Catholic Church
The Roman Catholic Church uses a formally defined sequence of liturgical colours through its calendar — violet for Advent and Lent, white or gold for major feasts, red for Pentecost and martyrs' feast days, and green for Ordinary Time — one of the more explicitly codified colour systems in any major religious tradition.
Eastern Orthodox liturgical colours
Stable, widely documentedEastern Orthodox liturgical tradition
Eastern Orthodox liturgical colour use is real but considerably less standardised across jurisdictions than the Roman Catholic sequence — gold, white, purple and red all appear for specific seasons and feasts, but exact conventions vary by national church and local custom.
Green in Islamic tradition
Stable, widely documentedIslamic tradition
Green holds documented significance in Islamic tradition, referenced in the Quran in connection with paradise, and appears prominently in the flags and religious architecture of many Muslim-majority countries and institutions — but it is one association among many, not a rule that governs Muslim life or dress generally.
Saffron and ochre robes in Theravada Buddhist tradition
Stable, widely documentedSoutheast Asia and Sri Lanka · Theravada Buddhist monastic tradition
Saffron and ochre-toned robes are traditionally worn by monastics in Theravada Buddhist traditions of Southeast Asia and Sri Lanka, historically linked to dyes available from local plant sources and to renunciation of worldly status.
Saffron in Hindu renunciation and ritual
Stable, widely documentedIndia and South Asian diaspora · Hindu tradition
Saffron carries a distinct religious association in Hindu tradition tied to renunciation, sacred fire and ascetic practice — worn by sadhus (Hindu ascetics) and used in some religious flags and ceremonial contexts, separate from saffron's use as an accent colour in Hindu wedding dress.
Blue and white in Jewish tradition
Stable, widely documentedJewish tradition
Blue and white carry documented significance in Jewish tradition — a specific blue dye (tekhelet) is referenced in the Torah for ritual fringes, and white is traditionally associated with purity in Jewish ritual dress; the same blue-and-white pairing was later adopted for the flag of Israel in the 20th century.
Saffron and blue in Sikh tradition
Genuinely contestedSikh tradition
The Nishan Sahib, the Sikh triangular flag flown outside gurdwaras, has historically been kesari (a saffron/orange shade), though its exact colour has become a genuinely disputed question within the Sikh community, with some organisations advocating a change to surmai (a blue shade) — a live, unresolved debate rather than a settled fact.
Every claim above is scoped by the specific culture, region and/or period it applies to — none of these associations are presented as universal. See pigment and dye history for more.