About 30 countries use red, white, and blue as the main colors of their national flags, depending on how strictly you define “main colors.”

Quick Scoop

When people ask “how many countries feature red, white, and blue as the main colors of their national flags?” , they usually mean countries whose flags are dominated by only those three colors, with no major additional colors like green, yellow, or black.

A commonly cited figure is around 29–33 countries :

  • One detailed list from a geography source counts 29 countries such as the United States, United Kingdom, France, Netherlands, Russia, Thailand, Norway, and others.
  • Another vexillology-style breakdown argues for 33 countries , including cases like Belize and Cape Verde where red, white, and blue are central but not always in a simple tricolor.

The difference comes from:

  • Whether you include countries whose flags also have small elements in other colors (for example, coats of arms with extra colors).
  • Whether “main colors” means only red, white, and blue, or simply that those three dominate the design.

In forum and Reddit discussions, you’ll often see people debating if countries like Haiti, Liechtenstein, or Cambodia “count,” exactly because of these minor extra colors or emblems.

A simple way to think about it

If you:

  1. Count flags where red, white, and blue are clearly dominant (even if a small emblem adds another color), you get roughly low 30s.
  1. Count only flags that use exclusively red, white, and blue (no other visible colors at all), the number is closer to the high 20s.

So, for a “Quick Scoop” style answer you can safely say:

There are about 30 countries whose national flags mainly feature red, white, and blue, with exact counts (around 29–33) varying by how strictly you define “main colors.”

Information gathered from public forums or data available on the internet and portrayed here.