extreme red, thegreen blue, and violet are freely transmitted. When these two spectra are combined, as represented inC, we find that only the extreme red, the green, and the bluegreen are transmitted, which constitutes the green colourobtained by combining naphthol yellow and acid indigoextract.… … FIG. 14. Green produced by admixture of yellow and blue, i.e., napbthol yellow and indigo extract. greenish blue be taken, which reflects little red light, thena purer and brighter green will be the result. § 30. When there is absorption of coloured rays by theadmixture of two colours, there is…
Color in the textile industries · Dyes and dyeing
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