1960: In the 60s, Dr. A. Hård, Dr. L. Sivik and Dr. G. Tonnquist initiated research in order to finally achieve this perfect visual colour communication system. During the 1960s and 1970s, the Swedish Colour Centre Foundation implements more than 100 man years of scientific research and development. Architects, designers, psychologists, physicists, chemists, and colour researchers work together to create the NCS – Natural Colour System.®© Underlying the Natural Colour System are almost 20 years of research work headed by Hård, Sivik and Tonnquist.