The NCS®-color-catalog stands for "Natural Colour System" and standing socially interesting colors. For this it is necessary to have true names that are four digits after the abbreviation NCS® with futher information.
Not every possible number is available as a NCS® color. Since 08. April 2022 there are 2050 NCS® shades you can use.
The NCS® color system This color catalog can be used worldwide.