The Union Flag shall be azure, the Crosses saltire of Saint Andrew and Saint Patrick quarterly per saltire, counter-changed, argent and gules, the latter fimbriated of the second, surmounted by the Cross of Saint George of the third fimbriated as the saltire.[13]
No official standardised colours were specified, although the Flag Institute defines the red and royal blue colours as Pantone 186 C (RGB 207, 20, 43) and Pantone 280 C (RGB 0, 36, 125), respectively.[14]
^The Flag InstituteArchived 10 September 2022 at the Wayback Machine It says "The proportions of the flag are 30 units wide by 50 units long", or in other words; the flag proportions are 3:5.
^A.C. Fox-Davies, The Art of Heraldry: An Encyclopædia of Armory (1904, reprinted 1986, ISBN0-906223-34-2), p. 399: "By the King: Whereas, some differences hath arisen between Our subjects of South and North Britaine travelling by Seas, about the bearing of their Flagges: For the avoiding of all contentions hereafter. We have, with the advice of our Council, ordered: That from henceforth all our Subjects of this Isle and Kingdome of Great Britaine, and all our members thereof, shall beare in their main-toppe the Red Crosse, commonly called St George's Crosse, and the White Crosse, commonly called St Andrew's Crosse, joyned together according to the forme made by our heralds, and sent by Us to our Admerall to be published to our Subjects: and in their fore-toppe our Subjects of South Britaine shall weare the Red Crosse onely as they were wont, and our Subjects of North Britaine in their fore-toppe the White Crosse onely as they were accustomed"|James VI and I|Orders in Council; Official creation of the Union Flag – 1606."
^Max Cryer, Curious English Words and Phrases: The Truth Behind the Expressions We Use (2012), p. 395: "When Britain's official flag settled down in 1801, its exact design and colouring were meticulously written out by Order of Council which described it as 'the Union Flag'... The correct formal wording of the Order of Council, 1801, was..." &c.
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