137. Taking each color in the value of its greatest intensity (as
shown in the Spectrum), and as intense as possible, the color may be
neutralized in the direction of Black (neutral darkness) or White
(neutral light) or in the direction of any value of neutrality
intermediate between Black and White, including the value of the
color in its greatest intensity. If we think of five degrees of
neutralization, including the extremes of Intensity and Neutrality,
we shall get as definite a terminology for color-intensities and
color-neutralizations as we have for colors and for values. The
choice of five degrees is arbitrary. It is a question how far the
classification shall go, what it shall include. We are dealing with
infinity, and our limitations are necessarily arbitrary.
In Diagram 3 we have a general classification of tones as to value,
color, color-intensity, and color-neutralization. Of values we have
nine. Of colors we have twelve. Of degrees of intensity and of
neutralization we have five.