noun
process color
Technical term in printing for the four standard ink colors (CMYK) used in full-color reproduction.
この雑誌はプロセスカラーで印刷されている。
This magazine is printed in process color.
Variant with a middle dot; less common in running text.
スポットカラー is a pre-mixed ink used for specific colors, while プロセスカラー refers to the four standard CMYK inks combined to create a wide range of colors.
Borrowed from English 'process color'.