International Colour Day2026 · Date · History · Messages
International Colour Association (AIC)
About International Colour Day
International Colour Day is observed on 21 March each year. The International Colour Association (AIC) says the proposal was presented in 2008 and agreed by AIC members in 2009.
AIC frames the day around the role of colour across art, humanities, science and technology. The observance is association-supported and international in scope, not a statutory public holiday.
Why International Colour Day matters
Colour can be studied through many fields, including visual perception, design, art, lighting, materials, communication and culture. International Colour Day provides a shared date for those different perspectives.
Because colour meanings and practices vary across contexts, the day is well suited to comparison and learning rather than claims that one symbolic meaning is universal.
History of International Colour Day
AIC says the Portuguese Color Association proposed an international colour day in 2008, with its president Maria João Durão presenting the idea to the International Colour Association.
AIC says its members agreed to the proposal in 2009.
The association explains that 21 March was selected for its relationship to the equinox and the symbolic balance of light and darkness. AIC continues to support the annual observance.
How the observance developed
This timeline uses documented milestones from reviewed sources. Missing stages are left out rather than guessed.
Portuguese Color Association, presented by president Maria João Durão
AIC states that the Portuguese Color Association proposed an international colour day in 2008 and that its president Maria João Durão presented the idea to AIC.
International Colour Association members
AIC states that the proposal was agreed in 2009 among the members of the International Colour Association.
International Colour Association (AIC)
AIC maintains the official International Colour Day information and supports annual activities.
What the evidence establishes
Confirmed institutional roles and milestones are shown first. Details that could not be established from the reviewed sources are listed separately below.
5 fields not established in reviewed sources
How to Observe International Colour Day
Visit an art, design, science or technology exhibition that explores colour in a documented way.
Compare how colour is measured in science with how it is used symbolically in art, language or design.
Try a small observation exercise using daylight and artificial light to see how the appearance of colour changes with illumination.
Learn about accessibility and colour contrast in digital or physical design.
Explore colour traditions from a specific culture using sources from that culture rather than assuming meanings are universal.
International Colour Day Facts
The documented calendar date for International Colour Day is 21 March each year.
AIC says the Portuguese Color Association proposed the international day in 2008.
The proposal was presented to AIC by Maria João Durão.
For International Colour Day, AIC says its members agreed to the proposal in 2009.
The March 21 date was chosen in connection with the equinox and the symbolic relationship between light and darkness.
The reviewed sources do not establish the day as a statutory public holiday.
International Colour Day Messages
Happy International Colour Day—may it bring a fresh look at how colour shapes art, science, design and everyday perception.
Celebrate International Colour Day by noticing how colour changes across light, materials, cultures and contexts.
Wishing artists, designers, researchers and curious observers a bright International Colour Day.
May International Colour Day inspire a little more attention to the science, craft and meaning behind what we see.
Here’s to learning how colour connects perception, creativity and technology.
Topic and context
What this page does not assume
- Keep the source-defined country, community, organizer or institutional scope; do not silently broaden it.
- Do not treat the title alone as proof of government recognition or public-holiday status.
- Do not add a creator, founding story or origin claim unless the supporting evidence establishes it.
Evidence & sources
Sources used across the guide are gathered here. Labels show how each source supports the page, and contextual references are kept separate from primary evidence.
AIC — International Colour Day (opens in a new tab)
Organizer Dedicated Page
Understand it, compare it, then explore further
Start with the most common factual questions, then compare closely related observances and explore useful connections.
Frequently asked questions
When is International Colour Day?
21 March The documented recurrence rule is: 21 March.
Does International Colour Day fall on the same date every year?
Yes. It uses a fixed annual date unless stronger evidence changes the pattern.
Is International Colour Day an official public holiday?
The reviewed sources verify it within this scope: international colour awareness and interdisciplinary observance. That recognition does not by itself make it a statutory public holiday; the site only makes public-holiday claims when reliable evidence explicitly does so.
Who established or recognizes International Colour Day?
The reviewed sources identify International Colour Association members as the proclaiming or establishing body. The proposer or originator is recorded separately as Portuguese Color Association, presented by president Maria João Durão. Current facilitation or coordination is recorded as International Colour Association (AIC).
Is International Colour Day international or country-specific?
The documented scope is international or global: international colour awareness and interdisciplinary observance. That does not mean every country treats the date as a public holiday or observes it in the same way.
How is this page verified?
The factual information is checked against reviewed sources, including the date pattern, scope and institutional history. This page was checked on 2026-10-02.
When is International Colour Day?
It is observed on 21 March each year.
Who proposed International Colour Day?
AIC says the Portuguese Color Association proposed it in 2008, with president Maria João Durão presenting the idea to AIC.
Why is International Colour Day on 21 March?
AIC says the date was selected in relation to the equinox, symbolically connecting light and darkness.
Other observances on March 21
These observances are also listed on March 21, 2027.
California Strawberry Day
California Strawberry Commission first-party dietitian toolkits list March 21 as National California Strawberry Day and recommend it as an education/story opportunity about growers and farm…
Harmony Day
Department of the Prime Minister and Cabinet, Australian Government
Human Rights Day
The South African Government’s public-holidays page lists Human Rights Day on 21 March.
Independence Day
Namibia government history states that independence occurred on 21 March 1990 and that Independence Day is annually celebrated on March 21; the Public Holidays Act independently lists the s…
International Day for the Elimination of Racial Discrimination
A/RES/2142 (XXI)
International Day of Forests
A/RES/67/200