色度図作成ソフト ColorAC - phonon-spectrum.com
a*，b* ：CIELAB （CIE1976 L*a*b*) H，S ：HSV （coneモデル,cylinderモデル） の5種類をサポートします。 ※視角として，良く使われる2度視野だけでなく10度視野も適用できます。 ※L*a*b*の極座標表現L*C*h のプロットも可能です。
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