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Payne's Grey
Payne's grey is a dark blue-grey colour used in painting. It can be used as a mixer in place of black. Since it is less intense than black, it is easier to get the right shade when using it as a mixer. Originally a mixture of iron blue (Prussian blue), yellow ochre and crimson lake, Payne's grey now is often a mixture of blue (ultramarine or phthalocyanine) and black or of ultramarine and burnt sienna. The colour is named after William Payne, who painted watercolours in the late 18th century. The first recorded use of ''Payne's grey'' as a colour name in English was in 1835. The source of the colour displayed below is the ''Robert Ridgway color list'', entered onto the Internet from his 1912 book ''Color Standards and Color Nomenclature''. The normalized colour coordinates for Payne's grey are identical to dark electric blue, which was formalized as a color in the ISCC–NBS system in 1955. See also * List of colors These are the lists of colors; * List of colors: A–F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variations Of Gray
Variations of gray or grey include achromatic grayscale shades, which lie exactly between white and black, and nearby colors with low colorfulness. A selection of a number of these various colors is shown below. Chart of computer web color grays Below is a chart showing the computer web color grays. An ''achromatic gray'' is a gray color in which the red, green, and blue codes are exactly equal. The web colors ''gray'', ''gainsboro'', ''light gray'', ''dark gray'', and ''dim gray'' are all achromatic colors. A ''chromatic gray'' is a gray color in which the red, green, and blue codes are not exactly equal, but are close to each other, which is what makes it a shade of gray. White and black The colors white and black are not usually thought of as shades of gray, but they can be thought of as shades of achromatic gray, as both contain equal amounts of red, blue and green. White is at the extreme upper end of the achromatic lightness, value scale and black is at the extrem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watercolour
Watercolor (American English) or watercolour (British English; see spelling differences), also ''aquarelle'' (; from Italian diminutive of Latin ''aqua'' "water"), is a painting method”Watercolor may be as old as art itself, going back to the Stone Age when early ancestors combined earth and charcoal with water to create the first wet-on-dry picture on a cave wall." London, Vladimir. The Book on Watercolor (p. 19). in which the paints are made of pigments suspended in a water-based solution. ''Watercolor'' refers to both the medium and the resulting artwork. Aquarelles painted with water-soluble colored ink instead of modern water colors are called ''aquarellum atramento'' (Latin for "aquarelle made with ink") by experts. However, this term has now tended to pass out of use. The conventional and most common ''support''—material to which the paint is applied—for watercolor paintings is watercolor paper. Other supports or substrates include stone, ivory, silk, reed, papyr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paynes Grey
Payne's grey is a dark blue-grey colour used in painting. It can be used as a mixer in place of black. Since it is less intense than black, it is easier to get the right shade when using it as a mixer. Originally a mixture of iron blue (Prussian blue), yellow ochre and crimson lake, Payne's grey now is often a mixture of blue (ultramarine or phthalocyanine) and black or of ultramarine and burnt sienna. The colour is named after William Payne, who painted watercolours in the late 18th century. The first recorded use of ''Payne's grey'' as a colour name in English was in 1835. The source of the colour displayed below is the ''Robert Ridgway color list'', entered onto the Internet from his 1912 book ''Color Standards and Color Nomenclature''. The normalized colour coordinates for Payne's grey are identical to dark electric blue, which was formalized as a color in the ISCC–NBS system in 1955. See also * List of colors These are the lists of colors; * List of colors: A–F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISCC–NBS System
The ISCC–NBS System of Color Designation is a system for naming colors based on a set of 13 basic color terms and a small set of adjective modifiers. It was first established in the 1930s by a joint effort of the Inter-Society Color Council (ISCC), made up of delegates from various American trade organizations, and the National Bureau of Standards (NBS), a US government agency. As suggested in 1932 by the first chairman of the ISCC, the system’s goal is to be "a means of designating colors in the United States Pharmacopoeia, in the National Formulary, and in general literature ... such designation to be sufficiently standardized as to be acceptable and usable by science, sufficiently broad to be appreciated and used by science, art, and industry, and sufficiently commonplace to be understood, at least in a general way, by the whole public." The system aims to provide a basis on which color definitions in fields from fashion and printing to botany and geology can be systematized ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Blue (color)
Electric blue is a color whose definition varies but is often considered close to cyan, and which is a representation of the color of lightning, an electric spark, and the color of ionized argon gas; it was originally named after the ionized air glow produced during electrical discharges, though its meaning has broadened to include shades of blue that are metaphorically "electric" by virtue of being "intense" or particularly "vibrant". Electric arcs can cause a variety of color emissions depending on the gases involved, but blue and purple are typical colors produced in the troposphere where oxygen and nitrogen dominate. The first recorded use of ''electric blue'' as a color name in English was in 1845. The color electric blue (the version shown below as ''medium electric blue'') was in vogue in the 1890s.Maerz and Paul ''A Dictionary of Color'' New York:1930 McGraw-Hill Discussion of color Electric Blue, p. 156 Variations of electric blue Deep electric blue (French electric blu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Color/Normalized Color Coordinates
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within sister projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by '' Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outside organizations relevant to the field at issue. For ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Ridgway
Robert Ridgway (July 2, 1850 – March 25, 1929) was an American ornithologist specializing in systematics. He was appointed in 1880 by Spencer Fullerton Baird, secretary of the Smithsonian Institution, to be the first full-time curator of birds at the United States National Museum, a title he held until his death. In 1883, he helped found the American Ornithologists' Union, where he served as officer and journal editor. Ridgway was an outstanding descriptive taxonomist, capping his life work with ''The Birds of North and Middle America'' (eight volumes, 1901–1919). In his lifetime, he was unmatched in the number of North American bird species that he described for science. As technical illustrator, Ridgway used his own paintings and outline drawings to complement his writing. He also published two books that systematized color names for describing birds, ''A Nomenclature of Colors for Naturalists'' (1886) and ''Color Standards and Color Nomenclature'' (1912). Ornitholo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English Language
English is a West Germanic language of the Indo-European language family, with its earliest forms spoken by the inhabitants of early medieval England. It is named after the Angles, one of the ancient Germanic peoples that migrated to the island of Great Britain. Existing on a dialect continuum with Scots, and then closest related to the Low Saxon and Frisian languages, English is genealogically West Germanic. However, its vocabulary is also distinctively influenced by dialects of France (about 29% of Modern English words) and Latin (also about 29%), plus some grammar and a small amount of core vocabulary influenced by Old Norse (a North Germanic language). Speakers of English are called Anglophones. The earliest forms of English, collectively known as Old English, evolved from a group of West Germanic (Ingvaeonic) dialects brought to Great Britain by Anglo-Saxon settlers in the 5th century and further mutated by Norse-speaking Viking settlers starting in the 8th and 9th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Payne (painter)
William Payne (Exeter 4 March 1760 – August 1830 London) was an English painter and etcher who invented the tint Payne's grey. Life and work Payne hit upon certain methods which considerably increased the resources of watercolour art, especially in the rendering of sunlight and atmosphere. His 'style,' as it was called, was one which was not only new and effective, but could be learnt without much difficulty, and he soon became the most fashionable drawing-master in London. Among the innovations with which he is credited were "splitting the brush to give forms of foliage, dragging the tints to give texture to his foregrounds, and taking out the forms of lights by wetting the surface and rubbing with bread and rag". He also abandoned the use of outline with the pen, but the invention by which he is best known is a neutral tint composed of indigo, raw sienna, and lake called Payne's grey. His methods were regarded as tricky by the old-fashioned practitioners of the day. but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colour
Color (American English) or colour (British English) is the visual perceptual property deriving from the spectrum of light interacting with the photoreceptor cells of the eyes. Color categories and physical specifications of color are associated with objects or materials based on their physical properties such as light absorption, reflection, or emission spectra. By defining a color space, colors can be identified numerically by their coordinates. Because perception of color stems from the varying spectral sensitivity of different types of cone cells in the retina to different parts of the spectrum, colors may be defined and quantified by the degree to which they stimulate these cells. These physical or physiological quantifications of color, however, do not fully explain the psychophysical perception of color appearance. Color science includes the perception of color by the eye and brain, the origin of color in materials, color theory in art, and the physics of electr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sienna
Sienna (from it, terra di Siena, meaning "Siena earth") is an earth pigment containing iron oxide and manganese oxide. In its natural state, it is yellowish brown and is called raw sienna. When heated, it becomes a reddish brown and is called burnt sienna.''Shorter Oxford English Dictionary'', 5th Edition (2002) It takes its name from the city-state of Siena, where it was produced during the Renaissance. Along with ochre and umber, it was one of the first pigments to be used by humans, and is found in many cave paintings. Since the Renaissance, it has been one of the brown pigments most widely used by artists. The first recorded use of ''sienna'' as a color name in English was in 1760. The normalized color coordinates for sienna are identical to kobe, first recorded as a color name in English in 1924. Earth colors Like the other earth colors, such as yellow ochre and umber, sienna is a clay containing iron oxide, called limonite, which in its natural state has a yellow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phthalocyanine
Phthalocyanine () is a large, aromatic, macrocyclic, organic compound with the formula and is of theoretical or specialized interest in chemical dyes and photoelectricity. It is composed of four isoindole units linked by a ring of nitrogen atoms. = has a two-dimensional geometry and a ring system consisting of 18 π-electrons. The extensive delocalization of the π-electrons affords the molecule useful properties, lending itself to applications in dyes and pigments. Metal complexes derived from , the conjugate base of , are valuable in catalysis, organic solar cells, and photodynamic therapy. Properties Phthalocyanine and derived metal complexes (MPc) tend to aggregate and, thus, have low solubility in common solvents. Benzene at 40 °C dissolves less than a milligram of or CuPc per litre. and CuPc dissolve easily in sulfuric acid due to the protonation of the nitrogen atoms bridging the pyrrole rings. Many phthalocyanine compounds are, thermally, very stabl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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