Sudan

What the source says

Referenced, awaiting primary-source review

Adopted as the national flag in May 1970. Red represents Sudan's struggle for independence [...] and the sacrifices of the country's martyrs; white the people, light and optimism [and] the White Flag League [of] 1924; black Sudan [...] "land of the black people" [and] the black flag of nationalists [in] the Mahdist Revolution; green Islam, agriculture and the prosperity of the land. [Design] based on pan-Arab colours following the 1969 coup.

(r1) Flag of Sudan (Wikipedia (English)), read 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.

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

Red(r1) #D21034
The struggle for independence and the sacrifices of the martyrs(r1)
White(r1) #FFFFFF
The people, light and optimism; also the White Flag League that rose against colonial rule in 1924(r1)
Black(r1) #000000
Sudan itself ("Sudan" means "land of the black people"); also the black flag of the Mahdist Revolution(r1)
Green(r1) #007229
Islam, agriculture and the prosperity of the land(r1)

Symbolism and history(r1)

A red-white-black tricolor with a green hoist triangle, based on the pan-Arab colours, adopted in 1970 following the 1969 coup.

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”.

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 Sudan (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 Sudan on Wikipedia