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The 423-carat (85 g) blue Logan Sapphire. Sapphire is a saturated shade of blue, referring to the gemstone of the same name. Sapphire gems most commonly occur in a range of blue shades, although they can come in many different colors. Other names for variations of the color sapphire are blue sapphire or sapphire blue, shown below.
Navy and light blue colors conceal potential dirt or grease on the worker's clothing, helping them to appear cleaner. For the same reason, blue is a popular color for boilersuits which protect workers' clothing. Some blue collar workers have uniforms with the name of the business or the individual's name embroidered or printed on it.
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 ...
Midnight blue is a dark shade of blue named for its resemblance to the apparently blue color of a moonlit night sky around a full moon. Midnight blue is identifiably blue to the eye in sunlight or full-spectrum light , but can appear black under certain more limited spectra sometimes found in artificial lighting (especially early 20th-century ...
Prussian blue, a dark blue pigment containing iron and cyanide Prussian blue (medical use), the use of Prussian blue for medical treatment and diagnosis; Perls' Prussian blue, a stain used for medical diagnosis
This clustering results in a dark blue color that is the appearance of coarse Egyptian blue. Alternatively, fine-textured Egyptian blue consists of smaller clusters that are uniformly interspersed between the unreacted quartz grains and tends to be light blue in color. [13]
Haint blue is a collection of pale shades of blue-green that are traditionally used to paint porch ceilings in the Southern United States. [ 1 ] [ 2 ] Hex #D1EAEB is a popular shade of haint blue. The tradition originated with the Gullah in Georgia and South Carolina .
The Maya blue pigment is a composite of organic and inorganic constituents, primarily indigo dyes derived from the leaves of anil (Indigofera suffruticosa) plants combined with palygorskite, a natural clay and type of fuller's earth which is most common in the Southern United States, but is not known to exist in abundant deposits in Mesoamerica. [4]
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