Only four primary passport colors
It turns out that there are only four primary passport colors in the world, and each country has its own reasons for choosing one of these colors for the cover.
This is the most common color. Passports with a red cover are often chosen by countries with a historical or current communist system.
This is the next most common color. The blue cover symbolizes the “new world”. 15 Caribbean countries have blue passports.
Most Muslim countries have green passports. Examples include Morocco, Saudi Arabia, and Pakistan. Green is considered to be the favorite color of the Prophet Muhammad and is a symbol of nature and life.
The rarest passports are those with black covers. These can be found among the citizens of some African countries – Botswana, Zambia, Burundi, Gabon, Angola, Chad, Congo, Malawi, and others.
The map below is painted according to the color of each country’s passport