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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 ...
A color wheel is a tool that provides a visual representation of the relationships between all possible hues. The primary colors are arranged around a circle at equal (120 degree) intervals. (Warning: Color wheels frequently depict "Painter's Colors" primary colors, which leads to a different set of hues than additive colors.)
HSV (hue, saturation, value), also known as HSB (hue, saturation, brightness) is often used by artists because it is often more natural to think about a color in terms of hue and saturation than in terms of additive or subtractive color components. HSV is a transformation of an RGB color space, and its components and colorimetry are relative to ...
The difference is that a perfectly light color in HSL is pure white; but a perfectly bright color in HSV is analogous to shining a white light on a colored object. I.e. shining a bright white light on a red object causes the object to still appear red, just brighter and more intense.
MacEvoy's extensive site about color science and paint mixing is one of the best resources on the web. On this page, he explains the color-making attributes, and the general goals and history of color order systems—including HSL and HSV—and their practical relevance to painters. Smith, Alvy Ray (August 1978). "Color gamut transform pairs".
The HSV color space coordinates describe a color in terms of the hue, given as degrees, combined with a saturation and a value, both represented as percentages. (Value is similar to brightness in this usage.) In Wikipedia, the HSV coordinates are represented as three numbers separated by commas and identified as either degrees or percentage, as ...
The "attribute of a visual sensation according to which the perceived color of an area appears to be more or less chromatic". [8] The HSL and HSV color spaces are more intuitive translations of the RGB color space, because they provide a single hue number. However, their luminance variation does not match the way humans perceive color.
The 3 colours are generated using the HSV color space, then translated into RGB. Easily generate similar palettes, from different starting hues, using colorblender.com; Table moved to help-page Help:Using colors#Colour generation guide.