Mongolia
What the source says
Referenced, awaiting primary-source reviewThe current flag was adopted on 12 February 1992: a vertical triband with a red stripe at each side and a blue stripe in the middle. Blue represents the eternal blue sky; red [is] thriving for eternity. The Soyombo represents fire, sun, moon, earth, water, and a Yin and Yang symbol representing two fish, [as] fish never sleep thus symbolizing that the spirit of the Mongol people never sleeps.
Referenced, not verified: a secondary work states this, and the document that constitutes the flag has not been read for this entry. What the marks mean.
Colors and meaning
Symbolism and history(r1)
The Soyombo, a symbol combining fire, sun, moon, earth, water and a yin-yang of two fish (which never sleep, so the Mongol spirit never sleeps), sits in gold on the hoist-side red band of a red-blue-red triband; the socialist-era star above it was removed in 1992.
Most similar flags
The 6 closest of the 194 other national flags, ranked by a similarity index computed from the flag images themselves. The number is that index, 0–100 — not a claim that the two flags are “X% identical”.
- Timor-Leste74
the same vertical band layout; the same colours in similar amounts.
- Peru71
the same vertical band layout; similar colours in a different arrangement.
- Trinidad and Tobago71
the same vertical band layout; similar colours in a different arrangement.
- Portugal70
the same vertical band layout; the same colours in similar amounts.
- Bahrain69
the same vertical band layout; similar colours in a different arrangement.
- Canada69
the same vertical band layout; similar colours in a different arrangement.
Computed at build time: each flag is rasterised to 64x48, and the score is 0.55 × colour overlap + 0.45 × structure. A different weighting would rank these differently. How the index works.
References — not verification
(r1) Referenced to Flag of Mongolia (Wikipedia (English)) on 2026-07-17. States the adoption year, which colors the flag has, what the colors mean and the symbolism and history on this page. The passage it states them in is quoted at the top of this entry.
Further reading: Flag of Mongolia on Wikipedia