Alternative representations of the RGB color model
Fig. 1. HSL (a–d) and HSV (e–h). Above (a, e): cut-away 3D models of each. Below: two-dimensional plots showing two of a model's three parameters at once, holding the other constant: cylindrical shells (b, f) of constant saturation, in this case the outside surface of each cylinder; horizontal cross-sections (c, g) of constant HSL lightness or HSV value, in this case the slices halfway down each cylinder; and rectangular vertical cross-sections (d, h) of constant hue, in this case of hues 0° red and its complement 180° cyan.
HSL and HSV are the two most common cylindrical-coordinate representations of points in an RGB color model. The two representations rearrange the geometry of RGB in an attempt to be more intuitive and perceptually relevant than the cartesian (cube) representation. Developed in the 1970s for computer graphics applications, HSL and HSV are used today in color pickers, in image editing software, and less commonly in image analysis and computer vision.
HSL stands for hue, saturation, and lightness, and is often also called HLS. HSV stands for hue, saturation, and value, and is also often called HSB (B for brightness). A third model, common in computer vision applications, is HSI, for hue, saturation, and intensity. However, while typically consistent, these definitions are not standardized, and any of these abbreviations might be used for any of these three or several other related cylindrical models. (For technical definitions of these terms, see below.)
In each cylinder, the angle around the central vertical axis corresponds to "hue", the distance from the axis corresponds to "saturation", and the distance along the axis corresponds to "lightness", "value" or "brightness". Note that while "hue" in HSL and HSV refers to the same attribute, their definitions of "saturation" differ dramatically. Because HSL and HSV are simple transformations of device-dependent RGB models, the physical colors they define depend on the colors of the red, green, and blue primaries of the device or of the particular RGB space, and on the gamma correction used to represent the amounts of those primaries. Each unique RGB device therefore has unique HSL and HSV spaces to accompany it, and numerical HSL or HSV values describe a different color for each basis RGB space.[1]
Both of these representations are used widely in computer graphics, and one or the other of them is often more convenient than RGB, but both are also criticized for not adequately separating color-making attributes, or for their lack of perceptual uniformity. Other more computationally intensive models, such as CIELAB or CIECAM02 are said to better achieve these goals.
HSLandHSV are the two most common cylindrical-coordinate representations of points in an RGB color model. The two representations rearrange the geometry...
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the HSLandHSV color spaces. However, in the HSL color space saturation exists independently of lightness. That is, both a very light color and a very...
RGB, CMYK, LAB, HSV, HSL, and NCS Demonstrative color conversion applet HSV Colors by Hector Zenil, The Wolfram Demonstrations Project HSV to RGB by CodeBeautify...
HSV may refer to: HSLandHSV color space, which describes colors by hue, saturation, and lightness (or luminosity) Herpes simplex virus (HSV) spreads...
respectively. This also reduces saturation. In HSLandHSV, the displayed luminance is relative to the hue and chroma for a given lightness value, in other...
print, photography, computer monitors and television. The most well-known color models are RGB, CMYK, YUV, HSLandHSV. Because the perception of color is...
blend modes on HSV (aka HSB) or HSL. Blend modes based on HSV are typically labeled hue, saturation, and brightness. Using HSL or HSV has the advantage...
analogous to hue of the HSLandHSV color spaces. The radial coordinate is the purity, which is analogous to saturation of the HSLandHSV color spaces. Any...
color model, similar to HSLandHSV. It was developed by HSV’s creator Alvy Ray Smith in 1996 to address some of the issues with HSV. HWB was designed to...
characteristics of both cylindrical translations of the RGB color space, such as HSLandHSV, and the L*a*b* color space. Some conflicting definitions of the terms are:...
(in a CRT monitor) or filters and backlight (LCD monitor). Another way of creating colors on a monitor is with an HSL or HSV color model, based on hue, saturation...
brighter than white. Metallic colors which reflect light by effect. The HSLandHSV systems do not qualify, because many spectral colors lie rather far from...
HWB color model as an alternative to HSL/HSV. The draft CSS Color 5 specification introduces syntax for mixing and manipulating existing colors, including:...
example). The HSLandHSV color spaces are simple geometric transformations of the RGB cube into cylindrical form. The outer top circle of the HSV cylinder...
as the HSV, HSL or HSB color models, although their values can also be interpreted as a base color, saturation and lightness of a color. The HSL values...
y is neutral, but in practice such mixtures are often a muddy brown. HSLandHSV model Achromatic greys have no hue, so the h code is marked as "undefined"...
editable by vendors and users. The table shows component values in several notations of the RGB color space, i.e. RGB (non-linear), HSLandHSV, conversions...
"saturation" in the HSV color model. The property "hue" is as used in general color theory and in specific color models such as HSLandHSV color spaces, though...
picker and a conversion between RGB and hexadecimal color values. Selecting "Show color values" will also show conversions to the CMYK, HSLandHSV color...
display, such as standard Red Green Blue (sRGB) (and the color models built on it like HSLandHSV) are irregular, which means that even though the rectangles...
fuzzy sets that are defined on three components of the HSL color space HSLandHSV; The membership functions aim to describe colors follow the human intuition...
system. Over time, Ostwald's advances in color science became part of the HSLandHSV color system. Much of Ostwald's work on systematization of color was...
This article provides introductory information about the RGB, HSV, andHSL color models from a computer graphics (Web page, image) perspective. An introduction...
identification (in HEX, RGB, CMYK, HSLandHSV, among others). FancyZones adds a window manager that makes it easier for users to create and use complex window layouts...
the colorfulness, and the hue. HSVandHSL are transformations of Cartesian RGB primaries (usually sRGB), and their components and colorimetry are relative...
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