Sky blue

 ( Shades Of Azure ) 

Sky blue refers to a collection of shades comparable to that of a clear daytime sky. Typically it is a shade of cyan or light teal, though some iterations are closer to light azure or light blue. The term (as "sky blew") is attested from 1681. A 1585 translation of Nicolas de Nicolay's 1576 Les navigations, peregrinations et voyages faicts en la Turquie includes "the tulbant turban of the merchant must be skie coloured".Cited as 1585 in Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill Page 204; Color Sample of Sky Blue: Page 89 Plate 33 Color Sample E6.

Displayed at right is the web colour sky blue.

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Variations

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Celeste Celeste (, , ) is the colloquial name for the pale turquoise blue colour. The same word, meaning "of the sky", is used in Spanish language, Portuguese and Italian language for the colour. Etymology, it is derived by Latin term caelestis, that means del cielo in Italian. There are two "conventional" colours denominated celeste, according to the color model. One is the pure Celeste, (Web colors#B2FFFF; RGB 178,255,255) which may be referred as the "true" celeste as it is traditionally or officially understood; in English language, it may also be referred to as Italian sky blue (blu cielo italiano) and Bianchi Green, referring to Bianchi, the famous Italian company for Bicycle, the first in the history of vehicles, whose colour is characteristic. The Japanese equivalent is known as sora iro or mizuiro, referring to the colour of the sky or its reflection on the sea. The other one is also another conventional celeste (Web colors #99cbff and RGB 153,203,255) containing 100% of blue, associated to a more generic colour of the sky and remembering a type of light blue and the next sky blue gradations. Celeste, that is, the pure Celeste strictly speaking (Web colors #B2FFFF; RGB 178,255,255) from here on (and which can be thought as the "true" or "conventional" celeste), is a Hue of the cyan and a Color theory. It is the colour of the sky with optimal visibility, when it is clear, perfectly or near-perfectly cloudless and sunny with an optimal quantity of humidity, absence or optimal quantity of Dust, aerosol/particulates with a good or at least moderate AIQ (Air Quality Index), absence of mist, haze, resulting in a good diffusion of light blue without Colorfulness, which causes the prevalence of the white or of the warm colours of sunrise and sunset; in these excellent conditions, it is possible to see Celeste and its variations perpendicularly to the Sun, toward the horizon, where the sunlight is maximum as the sky is directly illuminated, and these shades merge with the golden light of solar rays and the white of the horizon, both in the morning and afternoon, or even across the entire region between the star and the horizon, when the star is high, relatively next to solar or true noon.Naturally, the apparent height of the star from the Earth changes in the year with the four , depending by the axial tilt of the planet respect to the Sun, so this is a general rule. Generically, what is said here for Celeste is valid for the regions between the equator and the Polar circle, including the temperate zones and subtropics. In these zones, the sun remains high enough throughout the year, especially in the warm seasons (spring, summer). Naturally, the closer you are to the equator the higher it will appear. In particular, in the warm seasons, with the Axial tilt of a hemisphere with respect to the Sun, there are simultaneously the optimisation of sunlight, Daylight, and so the pure celeste might be visible in the entire region between the horizon and Sun both in the morning and afternoon; generally, the higher the Sun is during the day and the year, the less visible celeste and variations will be. In particular, they are most visible in the morning across the Sun and the horizon in the early hours with the rising of the star, sometimes even until noon, until they are reduced to a few stripes on the horizon, where the cyan is more intense. In the afternoon, it is the opposite and the pure celeste and similar gradations could be widely visible between the Sun and horizon when the star is high, but starting to go down, that is especially in the early afternoon hours. Instead, in the cold season, with a low Sun and sunlight, the pure celeste may be visible only at the horizon, where the cyan is more intense for the maximum light, but is more difficult to see because of the major weather instability. Since sunlight is strongest at the horizon, that is where the pure celeste is more evident, producing the Hue of the cyan, very close to the white. Alternatively, other variants, like Celeste polvere, Pallido and Velato, are visible towards the horizon when the Sun is near to the zenith, always with conditions for good visibility. In the afternoon, always with good conditions, these three types of celeste, together with softer and less bright shades of celeste, are visible at a Angle from north to south, until around sunset.

In reality, it can be difficult to observe the pure celeste, being the colour of a clear day with optimal meteorological conditions; other shades of blue are often visible in the sky, as Light Sky Blue and similar gradations, among which is the other conventional celeste, similar to the light blue sky colours rather than the pure celeste. One scientific explanation needs to be made: the Sun emits light across the entire electromagnetic spectrum and so celeste, which is very close to the white with a RGB of 178,255,255, is very luminous, and so visible in the direction of the Sun because it is there the maximum quantity of solar light is present, especially towards the horizon, even if human eyes can only perceive the Visible spectrum. Here celeste and variations are more visible in the warm seasons because of the Axial tilt of a hemisphere with respect to the Sun, in spring and especially summer, with the optimisation of solar light, hours of daylight and Weather. Being the gradation of near-perfectly sunny and clear sky, the colour of an ideal sky, it is difficult to see pure celeste, especially during the coldest or most unstable seasons; instead, generically the sky shows the colour of the other conventional celeste with 100% of blue, recalling a light blue and the next other types of sky blue; this is not surprising due to the best diffusion of the blue because of the Raylegh scattering.

Bleu celeste ("sky blue") is a rarely occurring tincture in heraldry (not being one of the seven main colours or metals or the three "staynard colours"). This tincture is sometimes also called ciel or simply celeste. It is depicted in a lighter shade than the range of shades of the more traditional tincture azure, which is the standard blue used in heraldry.Scott-Giles, C. W. (1958). Boutell's Heraldry (rev. ed.). London & New York: Frederick Warne & Co.

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Gradations The Italian Wikipedia cites Il dizionario dei colori: nomi e valori in quadricromia by S.Fantetti and C.Petracchi and describes multiple variants of celeste as shown below, plus details as defined in the infobox above.

S.Fantetti e C.Petracchi (2025). 9788808079954, Zanichelli. ISBN 9788808079954

+ ! colour !! name !! C !! M !! Y !! K !! R !! G !! B !! HEX
celeste (sky blue, heavenly blue, Italian sky blue, bianchi green)	B2FFFF
celeste polvere powdery	E6FFFF
celeste pallido (pale)	CCFFFF
celeste velato Veiler overcast	CCE6E6
celeste opaco opaque	80CCCC

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Light sky blue Displayed at right is the web colour light sky blue. It is close in shade to baby blue.

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Medium sky blue Displayed at right is the colour medium sky blue. This is the colour that is called sky blue in Crayola crayons. This colour was formulated by Crayola in 1958.

"Sky blue" appears in the 32, 48, 64, 96 and 120 packs of crayons.

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Vivid sky blue Displayed at right is the colour vivid sky blue.

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Deep sky blue Deep sky blue is an azure-cyan colour associated with deep shade of sky blue.

Deep sky blue is a web colour.

This is the colour on the color wheel (RGB/HSV colour wheel) halfway between azure and cyan.Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill Color Sample of Capri: Page 93 Plate 35 Color Sample L7; The color Capri is shown as lying halfway between Cyan and Azure.

The colour name deep sky blue came into use with the formulisation of the X11 colour names over 1985–1989.

The normalised colour coordinates for deep sky blue are identical to Capri, which first came into use as a colour name in English in 1920.Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill Page 191

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French sky blue At right is displayed the colour French sky blue, which is the tone of sky blue that is called sky blue ( bleu ciel) in the Pourpre.com colour list, a colour list widely popular in France.

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Spanish sky blue Spanish sky blue is the colour that is called celeste (the Spanish language word for "sky blue") in the Guía de coloraciones ( Guide to colourations) by Rosa Gallego and Juan Carlos Sanz, a colour dictionary published in 2005 that is widely popular in the Hispanophone realm.

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Dark sky blue Displayed at right is the colour dark sky blue.

This is the colour called sky blue in Pantone.

The source of this colour is the "Pantone Textile Paper eXtended (TPX)" colour list, colour #14-4318 TPX—Sky Blue.

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In culture Sports

• Argentina: Following the colours of the flag of Argentina, in which sky blue ( celeste in Spanish) is the predominant colour, many Argentine sport teams feature the colour, including Racing Club de Avellaneda, italic=no, Racing de Córdoba, Club Atlético Temperley, Atlético de Rafaela, Villa San Carlos, italic=no, Gimnasia y Tiro de Salta, and Gimnasia y Esgrima de Concepción del Uruguay. In addition, the Argentina national football team is known as the albicelestes due to the white-and-sky blue striping on their jerseys. This colour scheme is featured in other prominent national squads in popular sports such as Rugby football, field hockey, polo or volleyball.
• Australia: Sky blue is the main colour of the Australian rugby league team, New South Wales Blues, as it is the official colour of the state they represent.
• India: Sky Blue is the main colour of Indian national teams of various sports including Cricket, Football and Field Hockey.
• Formula One: The Benetton Formula and its successor Renault team won the four drivers' and the constructors' World Championships of the squad with sky blue race cars, driven by Michael Schumacher at Benetton in and and Fernando Alonso at Renault in and .
• Italy: Celeste is the main colour of the football teams Lazio of Rome and Napoli of Naples.
• Sweden: Football club Malmö FF, the club with the most Swedish championships, adopted sky blue shirts in 1920, which have been used for more than a century.
• United Kingdom: Two professional football clubs in England traditionally wear sky blue shirts. Manchester City adopted sky blue as the main colour of their home jersey in 1894 and have used that ever since then. Coventry City also have had sky blue as the primary colour since the 1960s.
• Uruguay: The Uruguay national football team has worn a sky blue jersey since 1910, after Uruguayan club team River Plate F.C. wore sky blue while defeating contemporary Argentine powerhouse Alumni Athletic Club. The national team is nicknamed La Celeste. As in Argentina, a number of Uruguayan club teams use sky blue in their uniforms, such as C.A. Cerro, Montevideo City Torque, Club Oriental de Football, and Rocha F.C.

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See also

• Air Force blue
• Azure
• Bleu celeste (in heraldry)
• Haint blue
• List of colours
• Marian blue
• Shades of blue
• RAL 5015 Sky blue

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