Türkiye
What the source says
Referenced, awaiting primary-source reviewThe flag was standardized on 29 May 1936 via the Turkish Flag Law. The Ottoman Empire's star-crescent design was officially adopted in 1844 [...] based on the 18th-century flag of the Ottoman Empire. [No meaning is stated for the red colour or the crescent and star.]
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
Red(r1) #E30A17
Symbolism and history(r1)
A white crescent and star on a red field, based on the 18th-century flag of the Ottoman Empire (whose star-and-crescent design dates to 1844), standardized by the Turkish Flag Law of 29 May 1936.
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”.
Tunisia96near-identical colour proportions.
China95near-identical colour proportions.
Morocco94near-identical colour proportions.
Switzerland93near-identical colour proportions.
Tonga93near-identical colour proportions.
Vietnam93near-identical colour proportions.
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 Turkey (Wikipedia (English)) on 2026-07-17. States the adoption year, which colors the flag has 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 Turkey on Wikipedia
