Libya’s current flag (restored 3 August 2011) is the 1951 tricolour of red, black (double width), and green with a white crescent and five‑pointed star centred on the black band. The colours reference pan‑Arab traditions; the crescent and star Islam and sovereignty. From 1977–2011 a plain green flag was used. Ratio 1:2; construction sheets standardise the crescent and star.
Libya reinstated its original independence flag on 3 August 2011 during the revolution that ended the 1977–2011 plain green state banner. The restored design comprises three horizontal bands—red, a double‑height black centre, and green—with a white crescent and five‑pointed star centred on the black stripe.
The tricolour draws from Arab liberation colours associated with historical dynasties; the crescent and star symbolise Islam and national sovereignty. The doubled black band provides a stable field for the emblem and distinguishes the layout within the Arab colour family.
Legal standards specify a 1:2 ratio, the radius and thickness of the crescent arcs, star geometry, and colours to ensure consistent manufacture. Protocol governs precedence, half‑masting by decree, nocturnal illumination, and dignified retirement. Desecration and improper commercial use are restricted.
The 2011 restoration reconnected the republic to its founding symbolism from 24 December 1951. The flag is flown widely on public buildings and missions, serving as a marker of constitutional revival.