INTD 53

color interactions

after images

all hues have after images

affect adjacent colors, especially white—white surrounded by hues cannot easily remain white

the result of color seeking its opposite

adjacent hue tinged by its complement

successive contrast

afterimage reaction when eye views colors one after another

positive—same as color viewednegative—complementary hue of color viewed

successive contrast

successive contrast

successive contrast

successive contrast

successive contrast

successive contrast

successive contrast

outlining in black or white reduces or stops the afterimage effect

successive contrast

successive contrast

successive contrast

successive contrast

successive contrast

middle grays or neutral colors—most strongly influenced values

•become tinged with complement of hue•make adjacent hues appear stronger•smaller gray area more strongly influenced

simultaneous contrast

eye requires complementary hue of any color it sees—imposition of color onto adjacent area of color

simultaneous contrast

concerned with interactions that occur between hues, broken hues, and neutrals

outlining halts simultaneous contrast

simultaneous contrast

achromatic—concerns itself with black, white, and grays

•gray—darker on light background, lighter on dark background•light values appear lighter on dark background•value surrounded by lighter background appear darker

simultaneous contrast

chromatic—concerns itself with hue changes due to surrounding hue influence

•one color appears as two if placed on two different background colors

•two different colors appear to be same if placed on two different carefully chosen backgrounds (yellow & red background—yellow-orange on yellow & red-orange on red)

bezold effect

Wilhelm von Bezold (rug designer)—alter entire appearance of rug design by simply changing single color

optical mixing

result of two or more colors mixing to “become” another color

divisionism—separate colors set side by side so eye can blend or fuse them

optical mixing

pointillism—when dotsof color are used on a white background

optical mixing—pointillism

to achieve good results:•consider munsell color wheel—colors side by side•value of hues employed•intensity of hues employed•quantity of hues employed•viewing distance•lighting conditions

participation activity:optical color mix

…using the bezold effect, divisionism or pointillisim, create an illustration of your chosen optical color mixing strategy

…you may use paint, markers, colored pencils, magazines, etc… to create your illustration

…image outlines will be provided if necessary