Systems CIE Lab scale early CIE has set a scale for measuring color XYZ evidentiary used
to describe red (Red), green (Green) and blue (Blue), but because the coating can not describe the nature of the dark - light. of color CIE has developed a system XYL which describe the red, green, and brightness (lightness), respectively, such a system, it also lacks the description of the blue CIE has developed a color system later as an established and. widely used in the current system, the L * -a * -b * color system, described by the 3D axis L * describes the brightness (lightness) + L * value represents white until it reaches. -L * a * axis represents black to describe the color from green (-a *) to red (+ a *) axis b * to describe the color from blue (-b *) to yellow (+. b *) narrative feature of the CIE color shown in Figure 2.18 and 2.19, the company Hunter lab in America is another organization that conducts research and development of color measurement. Eventually, the system itself, which is called the Hunter lab color measurement systems Hunter lab scale which describe the system in three dimensions, as well as by the CIE Lab Hunter lab scale to describe the color as well as the L * -a * -. b * of CIE color difference between the CIE and Hunter lab is the formula to calculate the color of the Lab and L * -a * -b * are based on calculations of the value of XYZ systems.
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