0_Wizard
Blue is so beautiful. Lapis lazuli is a beautiful shade of blue. 
The semi-precious stone lapis lazuli was used in ancient Egypt for jewellery and ornament and later, in The Renaissance, to make the pigment ultramarine, the most expensive of all pigments.
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Blue
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Lapis lazuli
Lapis lazuli (, ), or lapis for short, is a deep blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color. As early as the 7th millennium BC, lapis lazuli was mined in the Sar-i Sang mines, in Shortugai, and in other mines in Badakhshan province in northeast Afghanistan. Lapis was highly valued by the Indus Valley Civilisation (3300–1900 BC). Lapis beads have been found at Neolithic burials in Mehrgarh, the Caucasus, and even as far from Afghanistan as Mauritania. It was used in the funeral mask of Tutankhamun (1341–1323 BC). At the end of the Middle Ages, lapis lazuli began to be exported to Europe, where it was ground into powder and made into ultramarine, the finest and most expensive of all blue pigments.
Blue
Blue is one of the three primary colours of pigments in painting and traditional colour theory, as well as in the RGB colour model. It lies between violet and green on the spectrum of visible light. The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colors; azure contains some green, while ultramarine contains some violet. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called Tyndall scattering explains blue eyes.
List of Deltora Quest characters
The "Deltora" series features a wide line of characters, both important and minor. The series also features many different monsters and creatures that appeared in all of the many different books. This article is a list of the many different characters and creatures that have appeared in the Deltora series. Lief was raised as a blacksmith's son in the run-down city of Del after the invasion. Hot-headed and impatient at the start of the series, all he wanted to do was go out and explore the city. On the night of his sixteenth birthday, he leaves on his father's quest to restore the Belt of Deltora, the only thing that can save their land and the heir from the tyranny of the Shadow Lord.
Blue–green distinction in language
Many languages do not distinguish between what in English are described as "blue" and "green" and instead use a cover term spanning both. To describe this English lexical gap, linguists use the portmanteau word "grue", from "green" and "blue", which the philosopher Nelson Goodman coined in his 1955 "Fact, Fiction, and Forecast" to illustrate the "new riddle of induction". The exact definition of "blue" and "green" may be complicated by the speakers not primarily distinguishing the hue, but using terms that describe other color components such as saturation and luminosity, or other properties of the object being described.
Azure (color)
Azure ( ) is a variation of blue that is often described as the color of the sky on a clear day. On the , "azure" (color #007FFF) is defined as the color at 210 degrees, i.e., the hue halfway between blue and cyan. In the RGB color model, used to create all the colors on a television or computer screen, azure is created by adding a little green light to blue light. The complementary color of azure is orange. In the X11 color system which became a standard for early web colors, azure is depicted as a pale cyan. The color azure ultimately takes its name from the intense blue mineral lapis lazuli. '
Ultramarine
Ultramarine is a deep blue color and a pigment which was originally made by grinding lapis lazuli into a powder. The name comes from the Latin "ultramarinus", literally "beyond the sea", because the pigment was imported into Europe from mines in Afghanistan by Italian traders during the 14th and 15th centuries. Ultramarine was the finest and most expensive blue used by Renaissance painters. It was often used for the robes of the Virgin Mary, and symbolized holiness and humility. It remained an extremely expensive pigment until a synthetic ultramarine was invented in 1826. The pigment consists primarily of a zeolite-based mineral containing small amounts of polysulfides.
Royal Cemetery at Ur
The Royal Cemetery at Ur is an archaeological site in modern-day Dhi Qar Governorate in southern Iraq. The initial excavations at Ur took place between 1922 and 1934 under the direction of Leonard Woolley in association with the British Museum and the University of Pennsylvania Museum of Archaeology and Anthropology in Philadelphia, Pennsylvania. The process was begun in 1922 by digging trial trenches, in order for Woolley to get an idea of the layout of the ancient city. In one trench where initially nothing was discovered, head archaeologist Leonard Woolley decided to dig deeper. There, clay vases, limestone bowls, small bronze objects and assorted beads were found.
1_Apprentice
I love blue.  It is in fact my favorite color.
0_Wizard
There are many different shades that mix in other colors. What is your favorite?
Most blues contain a slight mixture of other colors; azure contains some green, while ultramarine contains some violet.
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Blue
self_1_Blue
Blue–green distinction in language
Many languages do not distinguish between what in English are described as "blue" and "green" and instead use a cover term spanning both. To describe this English lexical gap, linguists use the portmanteau word "grue", from "green" and "blue", which the philosopher Nelson Goodman coined in his 1955 "Fact, Fiction, and Forecast" to illustrate the "new riddle of induction". The exact definition of "blue" and "green" may be complicated by the speakers not primarily distinguishing the hue, but using terms that describe other color components such as saturation and luminosity, or other properties of the object being described.
Léo Ferré
Léo Ferré (24 August 1916 – 14 July 1993) was a French-born Monégasque poet and composer, and a dynamic and controversial live performer, whose career in France dominated the years after the Second World War until his death. He released some forty albums over this period, composing the music and the majority of the lyrics. He released many hit singles, particularly between 1960 and the mid-seventies. Some of his songs have become classics of the French chanson repertoire, including "Avec le temps", "C'est extra", "Jolie Môme" and "Paris canaille". Son of Joseph Ferré, staff manager at Monte-Carlo Casino, and Marie Scotto, a dressmaker of Italian descent from Piedmont, he had a sister, Lucienne, two years older.
Honda Ridgeline
The Honda Ridgeline is a sport utility truck (SUT) by American Honda Motor Company, Inc. and is categorized by some as a lifestyle pickup. The Ridgeline is one of only two trucks currently produced by the Honda Motor Company, the second being the Honda Acty mini-truck. The Honda Ridgeline is built using a unibody frame with a transverse-mounted engine, four-wheel independent suspension, flat cabin floor, flat truck bed, dual-action tailgate, an In-Bed Trunk, all-wheel drive —as well as front-wheel drive for select 2017/2018 US models—, and is only offered in a crew-cab/short-box configuration. The first Honda Ridgeline went on sale in March 2005 as a 2006 model year vehicle.
Isolina Ferré
Isolina Ferré Aguayo (September 5, 1914 – August 3, 2000) was a Puerto Rican Roman Catholic nun. Known as the "Mother Teresa of Puerto Rico", she received the Presidential Medal of Freedom in recognition of her humanitarian work. Ferré Aguayo was born in Ponce to a wealthy family. She was one of five siblings, Jose, Carlos, Hernan, Rosario and Luis, Puerto Rico's former governor. When she was 21, Ferré traveled to the United States where she commenced her novitiate. After five years, she completed the solemn vows. As part of her religious work, Ferré traveled back and forth between Puerto Rico and the United States, serving as an abbess in Cabo Rojo and New York City.
Luis A. Ferré
Luis Alberto Ferré Aguayo (February 17, 1904 October 21, 2003) was a Puerto Rican engineer, industrialist, politician, philanthropist, and a patron of the arts. He was the third Governor of the Commonwealth of Puerto Rico, serving from 1969 to 1973. He was the founding father of the New Progressive Party, which advocates for Puerto Rico to become a state of the United States of America. He is a recipient of the Presidential Medal of Freedom. Luis Alberto Ferré Aguayo was born in the southern city of Ponce, Puerto Rico on February 17, 1904. Ferré's grandfather Maurice Ferré Perotín was a French engineer who was involved in the construction of the Panama Canal before settling in Cuba.
Color wheel
A color wheel or colour circle is an abstract illustrative organization of color hues around a circle, which shows the relationships between primary colors, secondary colors, tertiary colors etc. Some sources use the terms "color wheel" and "color circle" interchangeably; however, one term or the other may be more prevalent in certain fields or certain versions as mentioned above. For instance, some reserve the term "color wheel" for mechanical rotating devices, such as color tops or filter wheels. Others classify various color wheels as "color disc", "color chart", and "color scale" varieties.
Shades of green
Varieties of the color green may differ in hue, chroma (also called saturation or intensity) or lightness (or value, tone, or brightness), or in two or three of these qualities. Variations in value are also called tints and shades, a tint being a green or other hue mixed with white, a shade being mixed with black. A large selection of these various colors is shown below. Green is common in nature, especially in plants. Many plants are green mainly because of a complex chemical known as chlorophyll which is involved in photosynthesis. Many shades of green have been named after plants or are related to plants.
1_Apprentice
Light blue.  Please tell me what color needs to be added to blue in order to make lapis lazuli?
0_Wizard
It is actually a true deep blue. It has an intense color. 
Lapis lazuli (, ), or lapis for short, is a deep blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color.
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Lapis lazuli
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Deep Blue (chess computer)
Deep Blue was a chess-playing computer developed by IBM. It is known for being the first computer chess-playing system to win both a chess game and a chess match against a reigning world champion under regular time controls. Deep Blue won its first game against a world champion on 10 February 1996, when it defeated Garry Kasparov in game one of a six-game match. However, Kasparov won three and drew two of the following five games, defeating Deep Blue by a score of 4–2. Deep Blue was then heavily upgraded, and played Kasparov again in May 1997. Deep Blue won game six, therefore winning the six-game rematch 3½–2½ and becoming the first computer system to defeat a reigning world champion in a match under standard chess tournament time controls.
Deep Blue Sea (1999 film)
Deep Blue Sea is a 1999 American science fiction horror film directed by Renny Harlin. It stars Saffron Burrows, Thomas Jane, Samuel L. Jackson, Michael Rapaport, and rapper LL Cool J. Set in an isolated underwater facility, the film follows a team of scientists and their research on mako sharks to help fight Alzheimer's disease. The situation plunges into chaos when multiple genetically engineered sharks go on rampage and flood the facility. "Deep Blue Sea" had a budget of $82 million and represented a test for Harlin, who had not made a commercially successful film since "Cliffhanger" in 1993.
Azurite
Azurite is a soft, deep blue copper mineral produced by weathering of copper ore deposits. It is also known as Chessylite after the type locality at Chessy-les-Mines near Lyon, France. The mineral, a carbonate, has been known since ancient times, and was mentioned in Pliny the Elder's Natural History under the Greek name "kuanos" (κυανός: "deep blue," root of English "cyan") and the Latin name "caeruleum". The blue of azurite is exceptionally deep and clear, and for that reason the mineral has tended to be associated since antiquity with the deep blue color of low-humidity desert and winter skies.
List of Tokyo Mew Mew characters
The Mew Mews are led by the main character, Ichigo Momomiya, whose first task is to gather the other four Mew Mews: Minto Aizawa, Retasu Midorikawa, Bu-Ling Huang, and Zakuro Fujiwara. As the series progresses, Ichigo goes from having a crush on Masaya Aoyama to becoming his girlfriend while trying to hide her secret double life from him. The series antagonists include three aliens, Quiche, Pie, and Tart, and their leader, Deep Blue. Originally from Earth, the aliens were forced to leave long ago due to deadly environmental changes. They have returned to kill the humans, who they feel are destroying their planet, and reclaim the planet.
Deep Blue (song)
"Deep Blue" is a song by English musician George Harrison, released as the B-side to his 1971 charity single "Bangla Desh". Harrison wrote the song in 1970, midway through the recording sessions for "All Things Must Pass", and recorded it in Los Angeles the following year while organising the Concert for Bangladesh. The composition was inspired by the deteriorating condition of his mother, Louise, before she succumbed to cancer in July 1970, and by Harrison's feelings of helplessness as he visited her in hospital in the north of England. Given the subject matter of his lyrics, "Deep Blue" also served to convey the suffering endured by the millions of refugees from war-torn Bangladesh in 1971, as sickness and disease became widespread among their makeshift camps in northern India.
Deep Blue versus Garry Kasparov
Deep Blue versus Garry Kasparov was a pair of six-game chess matches between world chess champion Garry Kasparov and an IBM supercomputer called Deep Blue. The first match was played in Philadelphia in 1996 and won by Kasparov. The second was played in New York City in 1997 and won by Deep Blue. The 1997 match was the first defeat of a reigning world chess champion by a computer under tournament conditions. The 1997 match was the subject of a documentary film, "The Man vs. The Machine". Deep Blue's win was seen as very symbolically significant, a sign that artificial intelligence was catching up to human intelligence, and could defeat one of humanity's great intellectual champions.
Blue–green distinction in language
Many languages do not distinguish between what in English are described as "blue" and "green" and instead use a cover term spanning both. To describe this English lexical gap, linguists use the portmanteau word "grue", from "green" and "blue", which the philosopher Nelson Goodman coined in his 1955 "Fact, Fiction, and Forecast" to illustrate the "new riddle of induction". The exact definition of "blue" and "green" may be complicated by the speakers not primarily distinguishing the hue, but using terms that describe other color components such as saturation and luminosity, or other properties of the object being described.
1_Apprentice
My grand daughter asked me how to make a purple color.  What color needs to be added to blue?
0_Wizard
Purple is an intermediate on the color wheel. It takes red and blue to make. 
Purple is a color intermediate between blue and red.
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Purple
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History of Crayola crayons
Since the introduction of Crayola drawing crayons by Binney & Smith in 1903, more than two hundred distinctive colors have been produced in a wide variety of assortments. The line has undergone several major revisions in its history, notably in 1935, 1949, 1958, and 1990. Numerous specialty crayons have also been produced, complementing the basic Crayola assortment. After several decades producing commercial pigments, Binney & Smith produced their first crayon, the black Staonal Marking Crayon, in 1902. The following year, the company decided to enter the consumer market with its first drawing crayons.
Color wheel
A color wheel or colour circle is an abstract illustrative organization of color hues around a circle, which shows the relationships between primary colors, secondary colors, tertiary colors etc. Some sources use the terms "color wheel" and "color circle" interchangeably; however, one term or the other may be more prevalent in certain fields or certain versions as mentioned above. For instance, some reserve the term "color wheel" for mechanical rotating devices, such as color tops or filter wheels. Others classify various color wheels as "color disc", "color chart", and "color scale" varieties.
Tertiary color
A "tertiary color" is a color made by mixing full saturation of one primary color with half saturation of another primary color and none of a third primary color, in a given color space such as RGB, CMYK (more modern) or RYB (traditional). Tertiary colors have general names, one set of names for the RGB color wheel and a different set for the RYB color wheel. These names are shown below. Another definition of tertiary color is provided by color theorists such as Moses Harrisand Josef Albers, who suggest that tertiary colors are created by intermixing pairs of secondary colors: orange-green, green-purple, purple-orange; or by intermixing complementary colors.
Shades of purple
There are numerous variations of the color purple, a sampling of which are shown below. In common English usage, "purple" is a range of hues of color occurring between red and blue. In color theory, "purple" colors are any colors on the line of purples on the CIE chromaticity diagram (or colors that can be derived from colors on the line of purples), i.e., any color between red and violet, not including either red or violet themselves. The first recorded use of "purple" as a color name in English was in 975 AD. "See also under Purple#In art and history the section "In prehistory and the ancient world: Tyrian purple" "  "Tyrian purple" is the contemporary English name of the color that in Latin is denominated ""purpura"".
Purple
Purple is a color intermediate between blue and red. It is similar to violet, but unlike violet, which is a spectral color with its own wavelength on the visible spectrum of light, purple is a composite color made by combining red and blue. According to surveys in Europe and the U.S., purple is the color most often associated with royalty, magic, mystery and piety. When combined with pink, it is associated with eroticism, femininity and seduction. Purple was the color worn by Roman magistrates; it became the imperial color worn by the rulers of the Byzantine Empire and the Holy Roman Empire, and later by Roman Catholic bishops.
Red-violet
Red-violet is a rich color of high medium saturation about 3/4 of the way between red and magenta, closer to magenta than to red. It is classified in color theory as one of the purple colors—a non-spectral color between red and violet that is a deep version of a color on the line of purples on the CIE chromaticity diagram. Both its saturation and brightness falling short of 100%, red-violet is not a pure chroma. There is a color of similar hue that, however, comes close to being a pure chroma: process magenta. The pure chroma color composed of equal parts of magenta and red is called rose. In the use by artists, red-violet is equivalent to purple, however, although the color "purple" is inaccurately used by many people as a synonym for violet or a color close to violet, professional artists who use the RYB color wheel generally use the term "purple" to specifically refer to a pigment color that is equivalent to red-violet (i.e., the tertiary color between violet and red on the RYB color wheel) in order to give themselves a larger and more balanced palette of pigments to work with.
Color theory
In the visual arts, color theory or colour theory is a body of practical guidance to color mixing and the visual effects of a specific color combination. There are also definitions (or categories) of colors based on the color wheel: primary color, secondary color and tertiary color. Although color theory principles first appeared in the writings of Leone Battista Alberti (c.1435) and the notebooks of Leonardo da Vinci (c.1490), a tradition of "colory theory" began in the 18th century, initially within a partisan controversy over Isaac Newton's theory of color ("Opticks", 1704) and the nature of primary colors.
1_Apprentice
Thank you for your information.  
0_Wizard
Blue actually is between violet and green on the light spectrum. 
It lies between violet and green on the spectrum of visible light.
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Blue
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Grow light
A grow light or plant light is an artificial light source, generally an electric light, designed to stimulate plant growth by emitting a light appropriate for photosynthesis. Grow lights are used in applications where there is either no naturally occurring light, or where supplemental light is required. For example, in the winter months when the available hours of daylight may be insufficient for the desired plant growth, lights are used to extend the time the plants receive light. If plants do not receive enough light, they will grow long and spindly. Grow lights either attempt to provide a light spectrum similar to that of the sun, or to provide a spectrum that is more tailored to the needs of the plants being cultivated.
Theory of Colours
Theory of Colours (German: "Zur Farbenlehre") is a book by Johann Wolfgang von Goethe about the poet's views on the nature of colours and how these are perceived by humans. It was published in German in 1810 and in English in 1840. The books contains detailed descriptions of phenomena such as coloured shadows, refraction, and chromatic aberration. The work originated in Goethe's occupation with painting and mainly exerted an influence on the arts (Philipp Otto Runge, J. M. W. Turner, the Pre-Raphaelites, Wassily Kandinsky). The book is a successor to two short essays entitled "Contributions to Optics".
Metamaterial cloaking
Metamaterial cloaking is the usage of metamaterials in an invisibility cloak. This is accomplished by manipulating the paths traversed by light through a novel optical material. Metamaterials direct and control the propagation and transmission of specified parts of the light spectrum and demonstrate the potential to render an object seemingly invisible. Metamaterial cloaking, based on transformation optics, describes the process of shielding something from view by controlling electromagnetic radiation. Objects in the defined location are still present, but incident waves are guided around them without being affected by the object itself.
Fluorescence
Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence. In most cases, the emitted light has a longer wavelength, and therefore lower energy, than the absorbed radiation. The most striking example of fluorescence occurs when the absorbed radiation is in the ultraviolet region of the spectrum, and thus invisible to the human eye, while the emitted light is in the visible region, which gives the fluorescent substance a distinct color that can only be seen when exposed to UV light. Fluorescent materials cease to glow immediately when the radiation source stops, unlike phosphorescence, where they continue to emit light for some time after.
Light-emitting diode
A light-emitting diode (LED) is a two-lead semiconductor light source. It is a p–n junction diode that emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor. LEDs are typically small (less than 1 mm) and integrated optical components may be used to shape the radiation pattern. Appearing as practical electronic components in 1962, the earliest LEDs emitted low-intensity infrared light.
Color vision
Color vision is the ability of an organism or machine to distinguish objects based on the wavelengths (or frequencies) of the light they reflect, emit, or transmit. Colors can be measured and quantified in various ways; indeed, a person's perception of colors is a subjective process whereby the brain responds to the stimuli that are produced when incoming light reacts with the several types of cone cells in the eye. In essence, different people see the same illuminated object or light source in different ways. Isaac Newton discovered that white light, after being split into its component colours when passed through a dispersive prism, could, by passing them through a different prism, be recombined to make white light.
Blue
Blue is one of the three primary colours of pigments in painting and traditional colour theory, as well as in the RGB colour model. It lies between violet and green on the spectrum of visible light. The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colors; azure contains some green, while ultramarine contains some violet. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called Tyndall scattering explains blue eyes.
1_Apprentice
Okay.  Thank you.  You are a real wizard in this subject.