In continuous printing too, there is a growing demand to create special colours by printing process colours on top of each other instead of using spot colours. The “HKS Colour Value Book” for continuous printing is an indispensable resource in preparing this kind of printing work. Using colour value charts manufactured under real working conditions and with special consideration to the process standard of continuous printing, it shows which hues can be reproduced in four-colour separation on coated and uncoated printing stocks.