RGB color picker | RGB color codes chart | RGB color space | RGB color format and calculation | RGB color table
RGB color picker
RGB color codes chart
Hover with cursor on color to get the hex and decimal color codes below:
RGB color space
RGB color space or RGB color system, constructs all the colors from the combination of the Red, Green and Blue colors.
The red, green and blue use 8 bits each, which have integer values from 0 to 255. This makes 256*256*256=16777216 possible colors.
RGB ≡ Red, Green, Blue
Each pixel in the LED monitor displays colors this way, by combination of red, green and blue LEDs (light emitting diodes).
When the red pixel is set to 0, the LED is turned off. When the red pixel is set to 255, the LED is turned fully on.
Any value between them sets the LED to partial light emission.
RGB color format & calculation
RGB code has 24 bits format (bits 0..23):
RGB = (R*65536)+(G*256)+B , (when R is RED, G is GREEN and B is BLUE)
White RGB Color
White RGB code = 255*65536+255*256+255 = #FFFFFF
Blue RGB Color
Blue RGB code = 0*65536+0*256+255 = #0000FF
Red RGB Color
Red RGB code = 255*65536+0*256+0 = #FF0000
Green RGB Color
Green RGB code = 0*65536+255*256+0 = #00FF00
Gray RGB Color
Gray RGB code = 128*65536+128*256+128 = #808080
Yellow RGB Color
Yellow RGB code = 255*65536+255*256+0 = #FFFF00
RGB color table
|Color||HTML / CSS Name||Hex Code
|Cyan / Aqua||#00FFFF||(0,255,255)|
|Magenta / Fuchsia||#FF00FF||(255,0,255)|
|Color||Color Name||Hex Code
|dark golden rod||#B8860B||(184,134,11)|
|pale golden rod||#EEE8AA||(238,232,170)|
|dark olive green||#556B2F||(85,107,47)|
|dark sea green||#8FBC8F||(143,188,143)|
|medium spring green||#00FA9A||(0,250,154)|
|medium aqua marine||#66CDAA||(102,205,170)|
|medium sea green||#3CB371||(60,179,113)|
|light sea green||#20B2AA||(32,178,170)|
|dark slate gray||#2F4F4F||(47,79,79)|
|corn flower blue||#6495ED||(100,149,237)|
|deep sky blue||#00BFFF||(0,191,255)|
|light sky blue||#87CEFA||(135,206,250)|
|dark slate blue||#483D8B||(72,61,139)|
|medium slate blue||#7B68EE||(123,104,238)|
|magenta / fuchsia||#FF00FF||(255,0,255)|
|medium violet red||#C71585||(199,21,133)|
|pale violet red||#DB7093||(219,112,147)|
|light golden rod yellow||#FAFAD2||(250,250,210)|
|light slate gray||#778899||(119,136,153)|
|light steel blue||#B0C4DE||(176,196,222)|
|dim gray / dim grey||#696969||(105,105,105)|
|gray / grey||#808080||(128,128,128)|
|dark gray / dark grey||#A9A9A9||(169,169,169)|
|light gray / light grey||#D3D3D3||(211,211,211)|
RGB color model
The RGB color model is an additive color model in which red, green, and blue light are added together in various ways to reproduce a broad array of colors. The name of the model comes from the initials of the three additive primary colors, red, green, and blue.
The main purpose of the RGB color model is for the sensing, representation, and display of images in electronic systems, such as televisions and computers, though it has also been used in conventional photography. Before the electronic age, the RGB color model already had a solid theory behind it, based in human perception of colors.
RGB is a device-dependent color model: different devices detect or reproduce a given RGB value differently, since the color elements (such as phosphors or dyes) and their response to the individual R, G, and B levels vary from manufacturer to manufacturer, or even in the same device over time. Thus an RGB value does not define the same color across devices without some kind of color management.
Typical RGB input devices are color TV and video cameras, image scanners, and digital cameras. Typical RGB output devices are TV sets of various technologies (CRT, LCD, plasma, OLED, quantum dots, etc.), computer and mobile phone displays, video projectors, multicolor LED displays and large screens such as Jumbotron. Color printers, on the other hand are not RGB devices, but subtractive color devices (typically using CMYK color model).
This article discusses concepts common to all the different color spaces that use the RGB color model, which are used in one implementation or another in color image-producing technology.
How to form a color with RGB
To form a color with RGB, three light beams (one red, one green, and one blue) must be superimposed (for example by emission from a black screen or by reflection from a white screen). Each of the three beams is called a component of that color, and each of them can have an arbitrary intensity, from fully off to fully on, in the mixture.
The RGB color model is additive in the sense that the three light beams are added together, and their light spectra add, wavelength for wavelength, to make the final color's spectrum. This is essentially opposite to the subtractive color model, particularly the CMY color model, that applies to paints, inks, dyes, and other substances whose color depends on reflecting the light under which we see them. Because of properties, these three colors create white, this is in stark contrast to physical colors, such as dyes which create black when mixed.
Zero intensity for each component gives the darkest color (no light, considered the black), and full intensity of each gives a white; the quality of this white depends on the nature of the primary light sources, but if they are properly balanced, the result is a neutral white matching the system's white point. When the intensities for all the components are the same, the result is a shade of gray, darker or lighter depending on the intensity. When the intensities are different, the result is a colorized hue, more or less saturated depending on the difference of the strongest and weakest of the intensities of the primary colors employed.
When one of the components has the strongest intensity, the color is a hue near this primary color (red-ish, green-ish, or blue-ish), and when two components have the same strongest intensity, then the color is a hue of a secondary color (a shade of cyan, magenta or yellow). A secondary color is formed by the sum of two primary colors of equal intensity: cyan is green+blue, magenta is blue+red, and yellow is red+green. Every secondary color is the complement of one primary color: cyan complements red, magenta complements green, and yellow complements blue. When all the primary colors are mixed in equal intensities, the result is white.
The RGB color model itself does not define what is meant by red, green, and blue colorimetrically, and so the results of mixing them are not specified as absolute, but relative to the primary colors. When the exact chromaticities of the red, green, and blue primaries are defined, the color model then becomes an absolute color space, such as RGB or Adobe RGB; see RGB color space for more details.
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