Capital

Riyadh

Continent

Asia

Flag adopted

1973

Designer

Not individually credited

Saudi Arabia

Colors and meaning

• Green #016C39

  Islam, associated with the Wahhabi movement and the House of Saud

Symbolism and history

The Shahada, the Islamic declaration of faith, is written in white Thuluth script above a white sword on a plain green field, a design that legally may never be flown at half-mast or reproduced on clothing, since doing so would be seen as debasing the religious text.

Closest-looking flags

• 

  Afghanistan

  Shares the plain-field, script-only structure with Afghanistan's Taliban-era flag, though Saudi Arabia's field is green rather than white and adds a sword beneath the script.

Further reading: Flag of Saudi Arabia on Wikipedia