Take a look at your passport right now. Then glance at the one held by the person next to you in the immigration line.
Different countries, but the colors are likely not far from red, blue, green, or black. Coincidence? Not at all.
No Rules, But an Unwritten Consensus
The International Civil Aviation Organization does set technical standards for passports, from materials that must be flexible to resistance against temperatures ranging from -10 to 50 degrees Celsius, as well as readability in humidity levels between 5 and 95 percent.
But when it comes to color, ICAO does not regulate it at all. Design, typography, and even the cover color are entirely the prerogative of each issuing country.
So why do most countries still choose similar dark, muted tones? The answer is simple yet practical: darker colors appear more formal, more authoritative, and are better at concealing stains and wear over the document’s lifespan.
Red: A Legacy of History and Unity
Red is the most common passport color in the world. Behind it lie two major narratives, different, yet equally powerful.
First, the legacy of communism. Countries that were once under—or are still influenced by—communist regimes, such as Russia, China, Slovenia, Serbia, Latvia, Romania, and Georgia, often use red passports. The color is a legacy of the Soviet era, when red dominated the flag of the Soviet Union.
Second, the narrative of European unity. Member states of the European Union—with the exception of Croatia—have largely adopted burgundy passports as a shared symbol of identity and regional integration.
Even countries aspiring to join the EU, such as Turkey, North Macedonia, and Albania, have already switched their passports to red. In South America, Andean countries like Bolivia, Colombia, Ecuador, and Peru also use similar burgundy tones.
Blue: The Symbol of the “New World”
Blue is the second most common passport color in the world and is closely associated with what is often referred to as the “New World.”
Countries across the Americas strongly favor this color, among them the United States, Canada, Argentina, Brazil, Costa Rica, Venezuela, Guatemala, Paraguay, and Uruguay, along with many Caribbean nations.
In South America, blue passports also reflect membership in MERCOSUR, the region’s largest trade alliance, which unites more than 250 million people and represents over 75 percent of the region’s total GDP.
The passport of the United States itself has gone through several changes. After being standardized following the era of the League of Nations in the 1920s, it was originally green, then changed to blue in 1970, briefly reverted to green in 1993, and finally returned to blue in 1994—where it has remained ever since.
Green: Faith, Nature, and Regional Solidarity
For many countries, green is more than a color, it is an identity. In Islamic tradition, green is believed to have been the favorite color of the Prophet Muhammad. A verse in the Qur'an mentions “green garments worn by the inhabitants of paradise,” making green a symbol of eternity and faith.
It is no surprise, then, that many Muslim-majority countries—including Morocco, Saudi Arabia, and Pakistan—have chosen green as the color of their passports.
In West Africa, green carries a different yet equally powerful meaning. Countries such as Nigeria, Ivory Coast, Burkina Faso, Ghana, Senegal, and Niger use green passports as a symbol of their membership in the Economic Community of West African States (ECOWAS).
Black: Rare, Elegant, and Meaningful
Black is the rarest passport color in the world, but that rarity is precisely what makes it distinctive.
Countries such as New Zealand, Botswana, Zambia, Burundi, Gabon, Angola, Chad, Republic of the Congo, and Malawi have chosen black for their passports.
For New Zealand, black is a national color of pride, most famously associated with its legendary rugby team, the All Blacks. Meanwhile, Saint Kitts and Nevis—one of the world’s most sought-after citizenship destinations—also uses a black passport as a symbol of exclusivity and prestige.
From a practical standpoint, black has clear advantages: it is the most resistant to scratches and dirt, while also offering the most formal and authoritative appearance.
A Color That Speaks Without Words
A passport is one of the most personal yet political objects a person owns. It is proof of citizenship, a key to crossing borders, and—perhaps unexpectedly—a statement of identity carried everywhere.
Behind these four dominant colors lies a layered story: regional unity, ideological legacy, religious belief, cultural pride, and practical considerations grounded in everyday use.
So the next time you stand in line at immigration and notice the colors of the passports around you, you’ll know—each color tells a story.
