German RAL Color Sets the Standard for Color Measurement
RAL has organized the constant adaptation of the color samples to meet industry needs.
For example, RAL 210 60 30 is a color shade with a hue of 210, lightness of 60 and chroma of 30. If combining this color shade with a lighter one is necessary, users can choose RAL 210 70 30. This would create a color with the higher lightness 70, but the other two features of the color would remain the same. With this system, the creation of harmonic color combinations becomes easy.