Capital

Nukuʻalofa

Continent

Oceania

Flag adopted

1875

Designer

Not individually credited

Tonga

Colors and meaning

• Red #C10000

  The blood of Jesus Christ, per the flag's explicitly Christian symbolism

• White #FFFFFF

  Purity, and Tonga's status as the only Pacific nation never formally colonized

Symbolism and history

A red field bears a white canton with a red cross, adopted in 1875 and, by the country's own constitution, permanently unchangeable in design, one of the only national flags whose exact form is constitutionally frozen.

No documented visual overlap

Tonga’s design isn’t a close visual match for any other current national flag. A few more flags from Oceania, for browsing:

• Palau
• Papua New Guinea
• Samoa

Further reading: Flag of Tonga on Wikipedia