Nepal
What the source says
Referenced, awaiting primary-source reviewAdopted on 16 December 1962. The red colour of the field represents bravery and Nepal's national flower, the rhododendron; the blue colour of the border represents peace. It is the only non-rectangular national flag in the world [...] a combination of the two individual pennons used by rival branches of the ruling dynasty.
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 only non-rectangular national flag in the world, a double-pennon of two stacked crimson pennants (a moon-bearing pennant over a sun-bearing pennant), combining the two individual pennons once used by rival branches of the ruling dynasty, given precise geometric proportions in 1962.
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”.
- Canada68
the same vertical band layout; the same colours in similar amounts.
- Malta66
the same vertical band layout; the same colours in similar amounts.
- Algeria63
the same vertical band layout; similar colours in a different arrangement.
- Japan63
near-identical colour proportions.
- Mexico62
the same vertical band layout; similar colours in a different arrangement.
- France61
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 Nepal (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 Nepal on Wikipedia