Truth Of Hue Is A Relative Quality In All Colours Except The Extreme

: ON COLOURS AND PIGMENTS GENERALLY.

primaries, in the relations of which, blue, being of nearest affinity to

black or shade, has properly but one other relation, in which it

inclines to red and becomes purple-blue: it is, therefore, faulty or

false, when, tending to yellow, it becomes of a green hue. But red,

which is of equal affinity to light and shade, has two relations, by one

of which it verges upon blue and becomes a purple-red or crimson; and by

the other it leans to yellow, and becomes an orange-red or scarlet,

neither of which is individually false or discordant. Yet yellow, which

is of nearest affinity to white or light, has strictly but one true

relation, by which it inclines to red, and becomes a warm or orange

yellow, for by uniting with blue it becomes a defective green-yellow.

The best example of true yellow in a pigment, tending neither to red nor



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