Based on the color-matching of the classic HKS has for each paper defines the CMYK values ??of the 88 basic colors and implemented in the context of color plates. This makes it clear how your HKS colors with process colors (CMYK) are shown on the different types of paper.
Color plates K: Process Standard Offset (ISO 12647-2), Type 1/2, Image printing glossy / matt.
Color plates N: Process Standard Offset (ISO 12647-2), paper type 4, uncoated paper uncoated white offset.