The challenges of professional color work are well known: different printers and processes deliver different print results. A print may differ from how it looked on the monitor. A printed result made in the office appears different from one made by the printers due to the influence of a different environmental light source.

These difficulties are found in the differences between input and output devices and their capabilities for processing colors. It is therefore necessary to be able to control the interaction of color through the different media and devices.

The color management required for this is comprised of diverse tools that facilitate as original color reproduction as is possible on diverse periphery equipment. Included here is the so-called Profile Connection Space (PCS), which complies with the calculated ideal color space. Color profiles of the individual input, processing and output periphery equipment supply the system with information as to how much and which colors can be processed. A color computer forms the interconnecting element.