Peace flag

There have been several designs for a peace flag.

The Peace Flag is an initiative that aims to unify all nations underneath one common symbol on International Peace Day. While there are various icons of peace – the olive branch, the dove – there is no official world flag of peace adopted by the United Nations. That’s why this initiative has proposed that, for one day a year on 21 September, every country raises an all-white version of their national flag to represent that we are all one. In 2013, embassies of Colombia, Equatorial Guinea and Ecuador in London officially agreed to support The Peace Flag initiative by raising a colorless version of their respective flags on September 21. The initiative was nominated for a White Pencil in 2012 at D&AD for its contribution towards peace, in support of Peace One Day.

Colombian Flag of Peace

Equatorial Guinean Flag of Peace

Ecuadorian Flag of Peace

The white flag is recognized in most of the world as a flag of surrender, truce or ceasefire. The first mention of a white flag used in this context is made during the Eastern Han dynasty (AD 25–220). A white flag was also used by the anti-war movement during the US Civil War in 1861.

In 1891, the third Universal Peace Congress in Rome devised a generalized Peace Flag design, which was simply the home nation's flag bordered in white to signify non-violent conflict resolution. This was used (although not officially adopted) by the American Peace Society and the Universal Peace Union. It was designed by Henry Pettit.

In the 1890s, expatriate American Cora Slocomb di Brazza Savorgnan, the Countess Di Brazza, invented a universal peace flag with three upright bands: yellow, purple, and white, which became the peace flag of the International Peace Bureau. Originally, there was a complicated symbol on the middle band: "a shield ... surmounted by a man's and a woman's clasped hands, sustained by a pair of dove wings with a white star aloft; on the shield can appear any device chosen by the association adopting the flag, or simply the number of enrollment among the users of the flag, or the motto Pro Concordia Labor (For Peace I Work), or this motto may be placed upon a ribbon on the flag beneath the shield, or on a streamer (white) from the flag staff (blue, the color of promise) surmounted by a star with the motto of the association or individual using the flag upon the other white streamer".

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Wikipedia