RAL is a color matching system generally used in Europe. It was developed to determine colors. Today, it is generally used in the paint industry, but it is also frequently used in other sectors. RAL started with only 40 colors, then developed and reached over 1900 color series.

The initial purpose of this system is to facilitate color description. Because if there is a standard color definition and their codes that everyone can easily access, the error rate will decrease.

For example, when you say light blue, no one will understand which of the dozens of shades of light blue you mean. But when you transmit the RAL code, the other party will understand exactly what you want.