基本顏色和顏色組合,色譜儀,1881 年出版 插畫檔

Basic colors and color combinations: 1) Spectral colors; 2) Combinations of basic colors; 3) Color combinations, yellow-blue and red-green; 4) Three-combinations (triad), yellow-red-green and yellow-red-blue; 5) Three-combinations (triad), red-blue-green and green-red-yellow; 6) Color combinations, green-neutral gray and ultramarine-vermilion-neutral gray; 7) Three-combinations (triad), orange-blue-yellow and yellow-violet-yellow green on neutral green background; 8) Three-combinations (triad), yellow-green-violet (or better carmine). Chromolithograph, published in 1881.