Color theory defining the CMY primaries as substances that "absorbed" only one of the retinal primary colors: cyan absorbs only red (−R+G+B), magenta only green (+R−G+B), and yellow only blue violet (+R+G−B). It is important to add that the CMYK, or process, color printing is meant as an economical way of producing a wide range of colors for printing, but is deficient in reproducing certain colors, notably orange and slightly deficient in reproducing purples. A wider range of color can be obtained with the addition of other colors to the printing process, such as in Pantone's Hexachrome printing ink system (six colors),
Blue–green distinction in language Dutch distinguish blue (respectively ' and ') and green (' and ') very similarly to English. There are (compound) terms for light blue (' and ') and darker shades of blue (' and '). In addition, adjective forms of most traditional color names are inflected to match the corresponding noun's case and gender. The terms for "blue" and "green" have changed completely in the transition from Ancient Greek to Modern Greek. Ancient Greek had γλαυκός ("glaukós") "clear light blue", also with a turquoise/teal/green hue (it was a typical term for goddess Athena's eyes, portrayed in green or light blue) contrasting