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Hexadecimal 8-bit RGB representations of the main 125 colors. A color in the RGB color model is described by indicating how much of each of the red, green, and blue is included. The color is expressed as an RGB triplet ( r, g, b ), each component of which can vary from zero to a defined maximum value.
RGBA color model. Example of an RGBA image composited over a checkerboard background. alpha is 0% at the top and 100% at the bottom. RGBA stands for red green blue alpha. While it is sometimes described as a color space, it is actually a three-channel RGB color model supplemented with a fourth alpha channel.
To make a word have colour, use: <span style="color:hex triplet or colour name">text</span>. Note that you can't use the British spelling, "colour", in this context. Examples: <span style="color:red">red writing</span> shows as red writing. <span style="color:#0f0">green writing</span> shows as green writing.
These are the lists of colors ; List of colors: A–F. List of colors: G–M. List of colors: N–Z. List of colors (alphabetical) List of colors by shade. List of color palettes. List of Crayola crayon colors. List of RAL colours.
RGB uses additive color mixing, because it describes what kind of light needs to be emitted to produce a given color. RGB stores individual values for red, green and blue. RGBA is RGB with an additional channel, alpha, to indicate transparency. Common color spaces based on the RGB model include sRGB, Adobe RGB, ProPhoto RGB, scRGB, and CIE RGB.
The sRGB color triangle, shown as a subset of x,y space, a chromaticity space based on CIE 1931 colorimetry. A color triangle is an arrangement of colors within a triangle, based on the additive or subtractive combination of three primary colors at its corners. An additive color space defined by three primary colors has a chromaticity gamut ...
Demosaicing. Demosaicing (or de-mosaicing, demosaicking ), also known as color reconstruction, is a digital image processing algorithm used to reconstruct a full color image from the incomplete color samples output from an image sensor overlaid with a color filter array (CFA) such as a Bayer filter. It is also known as CFA interpolation or ...
In the RGB model, hues are represented by specifying one color as full intensity (255), a second color with a variable intensity, and the third color with no intensity (0). The following provides some examples using red as the full-intensity and green as the partial-intensity colors; blue is always zero:
The (un-normalized) color matching functions are the amounts of primaries needed to match the monochromatic test primary. These functions are shown in the plot on the right (CIE 1931). and are zero at 435.8 nm, and are zero at 546.1 nm and and are zero at 700 nm, since in these cases the test color is one of the primaries.
RYB is a subtractive color model used in art and applied design in which red, yellow, and blue pigments are considered primary colors. [1] [2] The RYB color model relates specifically to color in the form of paint and pigment application in art and design.