The Three Aspects of Color

• Hue: is one of the main properties of a color, defined technically, as "the degree to which a stimulus can be described as similar to or different from stimuli that are described as red, green, blue, and yellow,".

• Saturation:  is used to describe the intensity of color in the image. A saturated image has overly bright colors. Using a graphics editing program you can increase saturation on under-exposed images, or vise versa.

• Value: refers to the relative lightness or darkness of a certain area. Value can be used for emphasis.