As Blue As Indigo

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Iris Blue is actually a little bit darker than the color of the blue irises you’ll find growing in nature. Nevertheless, the soft, deep blue with hints of purple undertones is strongly reminiscent of the small flowers that grow around the world in various countries. Nakamura, Shuji. "Development of the Blue Light-Emitting Diode". SPIE Newsroom . Retrieved 28 September 2015. Cyan Blue is the closest to “real” or genuine blue as most digital screens or computers can get. The C in CMYK stands for “cyan” and measures the amount of cyan blue present in any shade or color, which means that this is as blue as it gets. Nuno Mateas, Victor de Freitas (2008). "Anthrocyanins as Food Colorants". In Gould, K.; Davies, K.; Winefield, C. (eds.). Anthocyanins: Biosynthesis, Functions, and Applications. Springer. p.283. ISBN 978-0-387-77334-6. Do not assume you can always park for free. The London boroughs of Kensington & Chelsea, the City of Westminster, the City of London and part of the London Borough of Camden

When diesel engines burn fuel, it’s well-known that a wide range of polluting compounds and chemicals are pumped out of the exhaust pipe and into the atmosphere. Nitrogen Oxide and Nitrogen Dioxide are two of the most unpleasant tailpipe pollutants, as they’re the ones that are said to contribute to breathing and respiratory problems in vulnerable people. They also build up in the atmosphere to cause smog and acid rain, so it’s no surprise that lawmakers around the world want to see them eradicated. Isaac Newton included blue as one of the seven colours in his first description of the visible spectrum. [13] He chose seven colours because that was the number of notes in the musical scale, which he believed was related to the optical spectrum. He included indigo, the hue between blue and violet, as one of the separate colours, though today it is usually considered a hue of blue. [14]Shorter wavelengths (violet and blue) are scattered the most strongly, so more of the blue light is scattered towards our eyes than the other colours. You might wonder why the sky doesn't actually look purple since the violet light is scattered even more strongly than blue. This is because there isn't as much violet in sunlight to start with, and our eyes are much more sensitive to blue.

The Pacific Ocean often has many different shades of blue lurking within its depths. Nevertheless, Pacific Blue, as a color, evokes the slightly green-tinged, slightly gray-tinged waters and waves that are often seen glinting beneath the sun’s rays. Nakamura, S.; Mukai, T.; Senoh, M. (1994). "Candela-Class High-Brightness InGaN/AlGaN Double-Heterostructure Blue-Light-Emitting-Diodes". Applied Physics Letters. 64 (13): 1687. Bibcode: 1994ApPhL..64.1687N. doi: 10.1063/1.111832. UCLA Blue, as the name would suggest, is one of the colors used by the University of California, Los Angeles and is seen around the various courts and fields of that university’s sporting teams. Dark blue seems to be a popular choice among car companies, as General Motors has long used a very similar shade to Ford Blue in the production and advertisement of its own vehicles. They may look extremely similar, but GM Blue is noticeably lighter. Marian Blue is a pale, glowing blue that takes its name from its association with the Virgin Mary. In medieval art, Mary was often depicted wearing a light blue to symbolize purity as well as her importance, as blue was typically reserved for those of high rank in the Byzantine Empire.You must display the badge on the dashboard or facia panel, where it can be clearly read through the front windscreen. If there is no dashboard or facia panel in your vehicle, you must display the badge in a place where it can be clearly read from outside the vehicle. The front of the badge should face upwards, showing the hologram. The side showing the photograph should not be visible through the windscreen. Blue meaning in life: Blue often represents peace and tranquility in one's life. As we grow older, blue spaces can even provide therapeutic benefits.

Air Force blue is a variety of colors that are different tones of azure, another shade of blue, that is primarily used in the United States Air Force (USAF), the Air Force Academy, as well as the Royal Air Force (RAF) uniforms, but various other hues of Air Force blue are utilized in different nations air forces as well. Portrait of King Louis XIV of France in coronation robes, by Hyacinthe Rigaud (c. 1700) (Louvre Museum) Tottenham Hotspur Football Club is another professional English football team that was founded in the late 1800s and continues to play professionally to this day. Although most of their apparel is white, team members often feature accents in this distinctive shade of dark blue. Teal is a blue-green color that derives its name from the common teal bird. Teal also happens to be the official color of ovarian cancer awareness. In 1824 the Societé pour l'Encouragement d'Industrie in France offered a prize for the invention of an artificial ultramarine which could rival the natural colour made from lapis lazuli. The prize was won in 1826 by a chemist named Jean Baptiste Guimet, but he refused to reveal the formula of his colour. In 1828, another scientist, Christian Gmelin then a professor of chemistry in Tübingen, found the process and published his formula. This was the beginning of new industry to manufacture artificial ultramarine, which eventually almost completely replaced the natural product. [28]Electric blue is a hue of blue in which the defining characteristics of it varies. It’s a color that represents the bright glow of lightning and electric sparks, as well as the color of ionized argon gas. Electric blue originally got its name due to ionized air glow that is produced during electrical discharges. This definition has changed over the years to include blues that have an “electric” appearance due to their intense and vibrant looks. In popular culture, electric blue is associated with the star sign Aquarius. a b c d Newsome, Andrew G.; Culver, Catherine A.; Van Breemen, Richard B. (2014). "Nature's Palette: The Search for Natural Blue Colorants". Journal of Agricultural and Food Chemistry. 62 (28): 6498–6511. doi: 10.1021/jf501419q. PMID 24930897.

Historically, Maya blue was recorded to have first appeared in the 800s and was still used up to the 1500s in several convents located in Colonial Mexico, where Maya blue was mainly used in paintings. Technically the same shade as “real” blue, except darker, Dark Blue provides a more somber approach to the blinding brightness of standard blue tones. Blue came into wider use beginning in the Renaissance, when artists began to paint the world with perspective, depth, shadows, and light from a single source. In Renaissance paintings, artists tried to create harmonies between blue and red, lightening the blue with lead white paint and adding shadows and highlights. Raphael was a master of this technique, carefully balancing the reds and the blues so no one colour dominated the picture. [73] In the 19th century, police in the United Kingdom, including the Metropolitan Police and the City of London Police also adopted a navy blue uniform. Similar traditions were embraced in France and Austria. [83] It was also adopted at about the same time for the uniforms of the officers of the New York City Police Department. [76] Religion YInMn Blue was discovered in 2009 and is a vibrant blue produced naturally by the combination of yttrium, indium, and manganese. The color doesn’t fade over time and is safer than other natural pigments.Paris Saint-Germain or PSG is a Parisian football club that competes in the top league of French football. Their colors are dark blue, red, and gold. The eye's lens is normally tinted yellow. This reduces the intensity of blue light reaching the retina. When the lens is removed because of cataract, it is usually replaced by an artificial intraocular lens; these artificial lenses are clear, allowing more intense blue light than usual to fall on the retina, leading to the phenomenon. Van Gogh's Starry Night Over the Rhône (1888). Blue used to create a mood or atmosphere. A cobalt blue sky, and cobalt or ultramarine water.