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Black replaced blue as the power colour in the 14th century, when European princes, and then merchants and bankers, wanted to show their seriousness, dignity and devoutness (see Black). Blue gradually returned to court fashion in the 17th century, as part of a palette of peacock-bright colours shown off in extremely elaborate costumes.
The word is derived from the Latin word caeruleus (Latin: [kae̯ˈru.le.us]), "dark blue, blue, or blue-green", which in turn probably derives from caerulum, diminutive of caelum, "heaven, sky". [2] "Cerulean blue" is the name of a blue-green pigment consisting of cobalt stannate (Co 2 SnO 4). The pigment was first synthesized in the late ...
Prussian blue is a dark blue pigment containing iron and cyanide produced by the oxidation of ferrous ferrocyanide salts. It was invented in Berlin between 1704 and 1710. It had an immediate impact on the pigment market, because its intense deep blue color approached the quality of ultramarine at a much lower price.
Blue also varies in shade or tint; darker shades of blue contain black or grey, while lighter tints contain white. Darker shades of blue include ultramarine, cobalt blue, navy blue, and Prussian blue; while lighter tints include sky blue, azure, and Egyptian blue (for a more complete list see the List of colours).
Purple cauliflower contains anthocyanins. Anthocyanins (from Ancient Greek ἄνθος (ánthos) 'flower' and κυάνεος / κυανοῦς (kuáneos/kuanoûs) 'dark blue'), also called anthocyans, are water-soluble vacuolar pigments that, depending on their pH, may appear red, purple, blue, or black.
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This is an accepted version of this page This is the latest accepted revision, reviewed on 22 January 2025. Variety of the color blue For other uses, see Shades of Blue (disambiguation). "Shade of Blue" redirects here. For the song by Black Rebel Motorcycle Club, see Shade of Blue (song). For the R&B/funk band, see Shade of Blue (band). Blue Wavelength 440–490 nm Common connotations ...
The word is derived from the Latin word caeruleus (Latin: [kae̯ˈru.le.us]), "dark blue, blue, or blue-green", which in turn probably derives from caerulum, diminutive of caelum, "heaven, sky". [4] "Cerulean blue" is the name of a blue-green pigment consisting of cobalt stannate (Co 2 SnO 4). The pigment was first synthesized in the late ...