hexachromic

hexachromic

(hĕks″ă-krō′mĭk) [″ + chroma, color]
Able to distinguish only six of the seven colors of the spectrum or unable to distinguish violet from indigo.
References in periodicals archive ?
UV technology also makes the hexachromic printing process simpler, further improving process efficiency and allowing faster design changes.
We also have developed Hexachromic inks for six-color corrugated presses.