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The color defined as blue in the RGB color model, X11 blue, is the brightest possible blue that can be reproduced on a computer screen, and is the color named blue in X11. It is one of the three primary colors used in the RGB color space, along with red and green.
This is a partial list of awareness ribbons. The meaning behind an awareness ribbon depends on its colors and pattern. Since many advocacy groups have adopted ribbons as symbols of support or awareness, ribbons, particularly those of a single color, some colors may refer to more than one cause.
Blue. Blue is a primary color across all models of color space. It is the color of the ocean and the sky; it often symbolizes serenity, stability, inspiration, or wisdom. It can be a calming color, and symbolize reliability.
The term blue generally describes colours perceived by humans observing light with a dominant wavelength that’s between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colours; azure contains some green, while ultramarine contains some violet.
Cerulean (/ s ə ˈ r uː l i ə n /), also spelled caerulean, is a variety of the hue of blue that may range from a light azure blue to a more intense sky blue, and may be mixed as well with the hue of green.
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, color #14-4318 TPX—Sky Blue.
Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula Cu Al 6 (P O 4) 4 (OH) 8 ·4H 2 O. It is rare and valuable in finer grades and has been prized as a gem and ornamental stone for thousands of years owing to its unique hue.
On the RGB color wheel, "azure" ( hexadecimal #0080FF) 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 50% of green light to a 100% of blue light.
Surveys in the US and Europe show that blue is the color most commonly associated with harmony, faithfulness, confidence, distance, infinity, the imagination, cold, and occasionally with sadness. [3]
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 ...