Many people find HSV the easiest color model to use. The HSV color model uses Hue, Saturation and Value components to define colors. Hue is the pure pigment (defined as an angle round the color circle) of the color. Saturation is the amount of white added to the color. The smaller the Saturation value, the greater the amount of added white. Value is the amount of black added to the color which can be viewed as the brightness of the color. So the Saturation and Value produce all the shades of the basic Hue value.