The Art of Graduate Blending

Everywhere we look, we observe objects containing various degrees of light and dark.
This lightness and/or darkness, to individuals in the art world, consider it as tonal
value. Between the continuum of light and dark lies, a world of gray tones, and these
tones are measured in terms of steps in a graduate scale. As the tones progress in
value towards white or black there is a vast verity of shade values considered as
graduate tones. These graduate tones gradually increase as they creep towards white
[light] and decrease in value as they descend towards black [dark].