Graphics Reference
In-Depth Information
Our optical system (eyes and brain) perceive the three primary colors as existing at different depths
in space, a function of how our brains interpret the wavelengths of these colors. Red appears sta-
tionary at a middle distance and seems to sit on the surface of the picture plane, neither in front of
nor behind it. Blue appears to recede behind the picture plane, while yellow appears to advance.
COLORS OF SIMILAR VALUE
will appear to cluster together into one form, as do the grayish and
olive green areas at the upper left of this study. Because their values are similar, the boundary
