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This article is written in British English, which has its own spelling conventions (colour, travelled, centre, defence, artefact, analyse) and some terms that are used in it may be different or absent from other varieties of English. According to the relevant style guide, this should not be changed without broad consensus.

Blue was nominated as a good article, but it did not meet the good article criteria at the time (November 2, 2019). There are suggestions on the review page for improving the article. If you can improve it, please do; it may then be renominated.

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Section sizes Section size for Blue (34 sections) Section name Byte count Section total (Top) 4,717 4,717 Etymology and linguistics 3,264 3,264 Optics and colour theory 3,364 7,253 LED 2,565 2,565 Lasers 1,324 1,324 Shades and variations 964 2,035 As a structural colour 1,071 1,071 Colourants 402 7,801 Artificial blues 3,622 3,622 Dyes for textiles and food 1,108 1,108 Pigments for painting and glass 860 860 Inks 500 500 Inorganic compounds 1,309 1,309 In nature 15 16,302 Sky and sea 3,503 3,503 Minerals 1,141 1,141 Plants and fungi 1,727 1,727 Animals 5,235 5,235 Eyes 4,681 4,681 History 44 14,505 In the ancient world 6,483 6,483 In the Middle Ages 2,710 2,710 Renaissance through 18th century 2,764 2,764 19th-20th century 2,504 2,504 In society and culture 59 13,654 Uniforms 2,377 2,377 Religion 5,585 5,585 Sports 1,936 1,936 Politics 3,697 3,697 See also 100 100 References 28 28 Works cited 1,543 1,543 Further reading 1,323 1,323 External links 675 675 Total 73,200 73,200

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Blue is one of the three primary color in the RYB color model Marxbarx ( talk) 09:41, 7 March 2024 (UTC) reply

 Not done: it's not clear what changes you want to be made. Please mention the specific changes in a "change X to Y" format and provide a reliable source if appropriate. M.Bitton ( talk) 14:54, 7 March 2024 (UTC) reply

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Blue is one of the three primary colors in the RYB colors model (traditional colors theory), as well as in the RGB (additive) colors model.[2] It lies between violet and cyan on the spectrum of visible light. The term blue generally describes colours perceived by humans observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colors; azure contains some green, while ultramarine contains some violet. Jacksparrowthepirate ( talk) 09:51, 7 March 2024 (UTC) reply

 Not done: it's not clear what changes you want to be made. Please mention the specific changes in a "change X to Y" format and provide a reliable source if appropriate. GrayStorm^{( Talk| Contributions)} 15:08, 7 March 2024 (UTC) reply

Jacksparrowthepirate seems to be asking to change "colour" to "color", but this article uses British English so nothing needs to be done ( MOS:ENGVAR). —  The Earwig ( talk) 16:22, 7 March 2024 (UTC) reply