Powder Coating Color Classification Systems:

- RAL - color marking system based on comparison with patterns. In this way, the colors of metal paints, aerosol car paints, self-adhesive PVC films used by artists and many other applications, including computer-mixed paints, regardless of their manufacturers, are determined. The name RAL is an acronym taken from the name of a German institution established in the 1920s: Reichsausschuss für Lieferbedingungen, since 1980 called: German Institute for Quality and Marking RAL Deutsches Institut für Gütesicherung und Kennzeichnung e. V. One of the tasks of this institute is to systematize the color description for industrial and commercial use. One company, Muster-Schmidt, founded in Berlin in 1905, was responsible for the quality of color reproduction in the color charts for 75 years. The system was created in 1927 and initially contained 30 colors, currently systematizes over 200. The system does not refer to other color models, the colors were determined arbitrarily. To distinguish it from other, complex color marking systems, it was called RAL CLASSIC.

The marking consists of the word "RAL" and four numbers:

RAL 10xx – a group of yellow shades
RAL 20xx – a group of orange shades
RAL 30xx – a group of red and pink shades
RAL 40xx - a group of purple and violet shades
RAL 50xx – a group of blue shades
RAL 60xx - a group of green shades
RAL 70xx - a group of gray shades
RAL 80xx – a group of brown shades
RAL 90xx – a group of white and black shades.
In addition, a more accurate model called RAL DESIGN was created, which includes 1825 colors (before 2018, the number of colors was 1625) and systematizes them taking into account the experimentally measured brightness and saturation.

The color notation in the RAL Design System is a numerical code that consists of the word "RAL" and seven digits, e.g.: RAL 210 60 30, where 210 is the hue (Hue), 60 is the brightness (Lightness) and 30 is the chrominance (Chroma ), which illustrates the position in the CIE LCH color space.

- Natural Color System (NCS) - a logical system of color order, developed by the Swedish Scandinavian Color Institute (now NCS Color AB), based on human perception of color and over 60 years of color research. The basics were taken from the work of the German psychologist Ewald Hering entitled "Das natürliche System der Farbempfindungen" published in 1874.

NCS is one of the most widespread systems in the world and is the norm in Sweden, Norway and Spain. It is used by around 1,000 enterprises in 60 countries under license. It allows you to describe all imaginable colors, regardless of material, texture, formulation, etc., and give them an unambiguous symbolic notation, which allows them to be analysed, produced and controlled, and to transfer color data between manufacturers, designers and their customers.

- Pantone LLC - an American company based in Carlstadt, New Jersey, known for the production of systems used in the printing industry. It was founded in 1963 by Lawrence Herbert.

Pantone has developed and released its color scale, which is a color standard called the Pantone (Color) Matching System (PMS). Colors are marked with a number (e.g. 2352) with additional markings such as fluorescence, metallicity, etc. The basic scale describes 1761 colors. They are created by mixing 18 pigments (including white and black), hence their representation on the CMYK and RGB scales is not obvious.