HSV & HSL

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HSV

 

A color model that describes color in terms of Hue, Saturation and Value. The Hue is the color like red or blue, the Saturation is how strong the color is, and the Value is the brightness. This is sometimes also called HSB (Hue Saturation Brightness).

 

HSL

 

A color model that describes color in terms of Hue, Saturation, and Lightness.

 

Details:

 

A. Hue

 

The distinct characteristics of color that distinguishes blue from red and yellow from green, etc. Technically, hue is the dominant wavelength in the reflected or emitted light.

 

B. Saturation

 

The intensity of a color with respect to its brightness or value. Given a level of brightness, saturation measures the amount of gray in a color. A color that lacks gray impurities will seem more intense and vivid. Saturation is closely related to chroma. The less gray, white, or black a color has in it, the more pure and vivid it will appear.

 

C.1 Value, Brightness

Describes how light or dark we perceive a color to be. The higher the brightness value, the closer the color will be to white.

 

C.2 Lightness, Luminance

 

The lightness or luminance of a color is similar to its value or brightness, but the two are not the same thing. In the physical world, luminance is the physically quantifiable intensity of light measured in energy per unit area. On your computer the sun may appear brighter than a tree, but in reality each pixel on the screen is emitting the same amount of energy. Luminance is a way to recreate that light effect on the computer. Colors wash out as luminance increases and colors darken as luminance decreases.

 

 

 

 

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