Color

About

A color is:

• a light wave in a range called the visual spectrum (that our eye see)
• the absence of light or mixed (achromatic colors (white, black, gray)
• in computer a data type that denotes a color.

A color can be called by its name (or the color name of its most obvious, or dominant hue).

Colors are discrete values with no clear ordering.

A color has three properties:

• hue (colors of the rainbow)
• saturation (colorfull, colorness, intensity)
• lightness (light/dark)

A color is defined in a colorspace that use as coordinates (known also as channel):

• the main properties for human: HSV (hue, saturation, lightness)
• the physicals properties such as:
  • additive property: RGB where you mix the red, green, and blue primary colors at a certain saturation.
  • subtractive property

Operations

• mix
• Color Difference / Distance
• contrast is the ratio between two colors of their luminance
• space conversion

They can all be done via software or library