INTRODUCTION TO COLOR THEORY JosĂŠ Luis CAIVANO caivano@fadu.uba.ar
University of Buenos Aires and National Council for Research Argentine Color Group
electromagnetic spectrum
380 nm
visible spectrum
780 nm
primary sources objetcs that emit light
secondary sources objects that reflect or transmit light coming from a primary source
psychical part of the process
physical part of the process
Color as a psychophysical phenomenon
Newton Optics, 1704: . . . if at any time I speak of Light and Rays as coloured . . . I would be understood to speak not philosophically and properly, but grossly, and accordingly to such Conceptions as vulgar People . . . would be apt to frame. For the Rays to speak properly are not coloured.
human vision
dog vision
16 cells
16 triple cells
cyan
magenta
yellow
yellow amarillo
red
green white
magenta
magenta cyan red
blue
blue black
yellow
additive mixture
green
cyan
subtractive mixture
blanco white
azul blue
amarillo yellow
redrojo
cian cyan
verde green
magenta magenta
negro black
back of the eye
front of the eye
light cone rod
white
red
green
blue
yellow
magenta
cyan
D50 illuminant
TL84 illuminant
A illuminant
UV radiation
simultaneous contrast
simultaneous contrast
simultaneous contrast
simultaneous contrast
France
chromatic adaptation
chromatic adaptation
normal vision
protanopia
deuteranopia
tritanopia
Metamerism due to a change in the illuminant
Metamerism due to a change in the observer
Association Internationale de la Couleur International Color Association Internationale Vereinigung f端r die Farbe
www.aic-color.org