[1] Adopted in 1967 to replace the British Blue Ensign defaced with the arms of the colony, it has been the flag of Saint Lucia since the country became an associated state of the United Kingdom that year.

[2] However, this political union turned out to be unsuccessful, and on 1 March 1967 – five years after the federation was dissolved – Saint Lucia became an Associated State.

[4] This gave the territory full control over domestic matters, while Britain retained responsibility for the island's foreign affairs and defence.

[2] The territory's new flag, which was designed by native Saint Lucian artist Dunstan St Omer,[5][6] was adopted on that same day.

[7] When Saint Lucia became an independent country on 22 February 1979, the overall design of the flag from twelve years before remained unchanged,[7][8] but the blue colour's shade and the triangles' sizes were modified marginally.