hues between the extremes of the colors composing it, and as the relations of colors have been deduced regularly from white or light to black or shade, so the same may be done inversely from black to white. On this plan the tertiaries, Olive, Russet and Citrine, take the place of the primaries. Blue, Red and Yellow, while the secondaries still retain their intermediate station and relation to both.
Thus, Russet and Olive compose, or unite in, dark Purple, Citrine and Olive in dark Green, Russet and Citrine in dark Orange. The tertiaries have therefore the same order of relation to Black that the primaries have to White; and we have black primaries, secondaries and tertiaries inversely, as we have White primaries, secondaries and tertiaries directly. In other words, we have light and dark colors of all classes.
It is important to the painter that he should understand the difference between hues, tints and shades. By mixing white with the original color, a tint is produced; by mixing color with color, compound colors or hues are formed, whilst from the mixture of colors or tints with black; shades result.
