By using the Pantone system, people in different locations can refer to the same color by knowing only the number that identifies it. The Pantone Matching System standardizes 1,114 colors and assigns each color a number and name. In colloquial speech RAL refers to the RAL Classic system, mainly used for varnish and powder coating but nowadays there are reference panels for plastics as well. This makes it possible to describe the colours of all surface materials and ensure that the colours turn out exactly as you want them to, The NCS system is used by architects, designers, and material manufacturers, the colour industry, product manufacturers, and retailers the world over. A notation represents a specific colour percept and says nothing about what pigments, lights rays or nerve signals that have been given rise to this perception. How the colour is mixed, as well as the measurement data, is necessary for production, but to communicate with the customer you need a system in the way people see colours. To characterize a colour you therefore have to describe what you see. Colour is what we see, a subjective visual sensation. NCS, Natural Colour System is a logical colour system which builds on how the human being sees colour.
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