Professionals should always use a physical RAL Colour Fan Deck or a device like the Jotun Colourpin Pro to verify a match before a major purchase. Tools | Colour Converter - Hempel

In the world of industrial coatings, automotive painting, and architectural design, color is rarely just "blue" or "red." It is a precise scientific formula. For professionals working with Jotun—a global leader in marine, protective, and decorative paints—matching their specific color codes to the standardized RAL Classic system is a frequent necessity.

The substrate material and the light source (sunlight vs. LED) can change how the conversion appears.

Before you attempt any conversion, you must understand what each system represents.