An achromatic color scheme is
simply colorless scheme possessing
no hue, using only black, white and
gray. A variation of this is possible,
making a warm or
cool achromatic by adding a hint of
red, yellow or blue to the neutrals.
ACHROMATIC COLOR SCHEMES
Complementary is a color
scheme using one
base color and its complement
which is the color on the exact
opposite side of
the color wheel.
COMPLEMENTARY
Double complementary color
scheme uses 4 colors made up
of 2 complementary color
pairs. It is also called
TETRADIC or SQUARE
COLOR SCHEME.
DOUBLE COMPLEMENTARY