Greece
What the source says
Referenced, awaiting primary-source reviewOfficially adopted by the First National Assembly at Epidaurus on 13 January 1822. White and blue might symbolize the colours of the Greek sky and sea. The most popular interpretation says that [the nine stripes] represent the syllables of the phrase Ελευθερία ή Θάνατος (Freedom or Death). The cross symbolises Christianity. Very many things have been said for the causes which lead to this specification for the Greek flag, but without historical merit.
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
White(r1) #FFFFFF
Symbolism and history(r1)
Nine alternating blue and white stripes, most popularly interpreted as the syllables of the motto "Eleftheria i Thanatos" (Freedom or Death), sit beside a white cross that symbolises Christianity, adopted in 1822; the article notes many things have been said about the flag's meaning without historical merit.
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”.
- Nicaragua87
the same horizontal band layout; near-identical colour proportions.
- Luxembourg75
the same horizontal band layout; the same colours in similar amounts.
- Uzbekistan74
the same horizontal band layout; the same colours in similar amounts.
- Estonia72
the same horizontal band layout; the same colours in similar amounts.
- Democratic Republic of the Congo70
the same horizontal band layout; similar colours in a different arrangement.
- Guatemala70
near-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 Greece (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 Greece on Wikipedia