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Red, Green, Blue. The three colours of light which can be mixed to produce any other colour. Coloured images are often stored as a sequence of RGB triplets or as separate red, green and blue overlays though this is not the only possible representation (see CMYK and HSV). These colours correspond to the three "guns" in a colour cathode ray tube and to the colour receptors in the human eye.

Often used as a synonym for colour, as in "RGB monitor" as opposed to monochrome (black and white).


(1) (Red Green Blue) A designation for motherboards and peripherals that display colors for a visual effect. For example, the backlit keys on an RGB keyboard can alternate through a rainbow of colors. See RGB keyboard, RGB motherboard and RGB RAM.

(2) (Red Green Blue) The computer's native color space and the system for capturing and displaying color images electronically. All TV, computer and electronic display screens create color by generating red, green and blue (RGB) lights. This is because our eyes are sensitive to red, green and blue, and our brain mixes the colors together (see trichromaticity). See RGBW and RGBY.

Cameras and scanners capture color with sensors that record the varying intensities of red, green and blue at each pixel location in the frame. See 24-bit color, CCD sensor, CMOS sensor, scanner and digital camera.

Display and Printing (RGB and CMYK)
For screen display, red, green and blue subpixels (dots) are energized to the appropriate intensity. When all three subpixels are turned on high, white is produced. As intensities are equally lowered, shades of gray are derived. The base color of the screen appears when all subpixels are turned off.

For printing on paper, the CMYK color space is used, not RGB. Combinations of cyan, magenta, yellow and black ink make up the colors. White is typically derived by using white paper and no ink for those areas; however, if white is of critical importance, a white spot color can be added to the CMYK process. See CMYK and spot color.

Video Processing (RGB or YUV)
TV/video signals are mostly in the YUV color space. They are converted to RGB in the computer for editing when RGB is the desired output. If YUV is the desired output, and the video editing program supports YUV, there is no need to convert to RGB for internal processing. However, no matter which color space is used for editing, all data must be converted to RGB for screen display. See YUV, Adobe RGB, sRGB, color space and anaglyph 3D.

RGB Display and CMYK Printing
Display screens are RGB devices and have red, green and blue pixels. Printers are CMYK devices and use cyan, magenta, yellow and black inks. In theory, equal parts of cyan, magenta and yellow ink make black, but they tend to be muddy. Thus, black ink is used, making it a four color CMYK process (K for blacK). See CMYK.

RGB Color Conversions
Printing requires conversion from RGB to CMYK, and video editing requires conversion to and from RGB and YUV.
References in periodicals archive ?
In addition to the Christie RGB pure laser projection systems powering the visuals, every auditorium at Docklands will also have Dolby Atmos sound, said Wrightson.
The RGB's position over the past three years is unsustainable--and with this year's PIOC, the RGB will be hard-pressed to vote for another rent freeze.
The analysts understand that RGB International experienced setbacks in the opening of five of its new TSM concessions in the Philippines (initially scheduled for opening by end-2010) as licences granted for these VIP Clubs (slot clubs) are currently being reviewed by the new board of Philippine Amusement and Gaming Corporation (PAGCOR); casino operations in the Philippines are governed and mostly operated by the government-owned PAGCOR.
In Figures 4-11 the results obtained by visual perception of the Koffka effect on which is applied the red color from the RGB system are presented.
If the transmission "windows" for a set of RGB filters do not overlap, important spectral lines could be lost in the gaps between the windows.
HOYTS Cinema Technology Group has always prided itself on introducing technologies that deliver the ultimate visuals for the best cinematic experience, witness our installation of the Christie CP42LH 3DLP 4K RGB laser projector for our 390-seat Xtremescreen premium auditorium in October 2016, at the HOYTS Chadstone complex, said Adam Wrightson, General Manager, HOYTS Cinema Technology Group.
They also unveiled the Concept Slate, Concept Curve and a host of new RGB lightingWhere to buy 4445 and liquid coolingWhere to buy 25000 demos at Computex 2017, being held at the Grand Hyatt Hotel, Taipei.
Karnataka, May 5 -- CORSAIR(R), a world leader in enthusiast memory, PC components and high-performance gaming hardware, today announced the immediate availability of the new CORSAIR GLAIVE RGB gaming mouse.
RSA appeared as an amicus in the case in support of the RGB.
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