Scales of Colors in Different Values
131. We must now proceed to the consideration of the qualities of light beyond the Scale of Neutral Values, in the region of colors and color-intensities,—a region of tones which we have not yet explored.
It is evident that no color can exist either in the value of Black or in the value of White, but in every other value we have the possibility of all colors. That is to say, we may have Red (R) or Orange (O) or Yellow (Y) or Green (G) or Blue (B) or Violet (V) or any of the colors lying intermediate between them,—Red Orange (RO), Orange Yellow (OY), Yellow Green (YG), Green Blue (GB), Blue Violet (BV), or Violet Red (VR): all these, in any value of the Scale of Values, except in the value of Black and in the value of White. The possibilities of value and color, in tones, are exhibited in the following diagram:—