According to algeria-un.org, cited in 1999, the features of the flag are set down precisely, being described as: The green must be a composition of equal yellow and blue having, according to the diagram of contrasts of Rood, a wavelength of 5,411 [ångströms] and the position 600 on the normal spectrum.

The red must be pure, of primary non-decomposable colour, and exempt of blue and yellow having, according to the above-indicated diagram, a wavelength of 6,562 [ångströms] and the position 285 on the normal spectrum.

[2] For Pierre Lux-Wurm, green and white bring to mind the ancient banners of Islam from the time of the Prophet Muhammad, while the crescent and star can be seen as symbols of light.

[5] Benjamin Stora suggests that the three colors of the flag originally represented the three countries of the Maghreb and the ideas of union.

[7] Numerous Arab and French sources unanimously agree on the tricolor Algerian flag of red, green and yellow horizontal bands, raised first by the corsair then Sultan Oruç Barbarossa,[8][9][10] the founder of the Regency of Algiers, a tributary state of the Ottoman Empire in North Africa from 1516 to 1830.

Since 1926, this organization has used a green flag with the words "Algeria our country, Arabic our language and Islam our religion".

[34] While there is some dispute over who exactly designed the green and white with red star and crescent symbol,[35] Émilie Busquant, wife of the Algerian nationalist leader Messali Hadj, is generally credited as having sewed the first version of the flag in 1934.

[36] Historian Benjamin Stora explains that it was during a meeting of the ENA, in 1934, that the colors of the flag were chosen, after which Émilie Busquant was tasked with sewing it.

[38][39] Research by historian Mohamed Ghnanèche shows that in 1940, another flag was adopted with a red star and a white crescent placed above the center.