One, the concept that lubricious harmonic color fastens

PCCS (Practical Color-ordinate System) colour system is development of Japanese colour institute, tonal series is the colour organization system that is a foundation with its. Its biggest characteristic is colorific 3 attribute concern, integrated quality get along with is tonal two kinds of ideas will make tonal series. Set out from tonal idea, plane showed the lightness relation of each hue and purity concern, from every, hue is in the position in tonal series, the composition content of the clear lightness that analyses outstanding photograph, purity.

　 2, the constituent structure of tonal series

Tonal series is by 24 of hue and 9 tonal composition, if pursue 1, see 24 kinds of lubricious link of tonal series.

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