Efficient Color
for Efficient Web Applications
Color is one of the
most
effective visual attributes
for coding information in
displays and is capable,
when used correctly,
of achieving powerful
and memorable effects
A little color can be
more effective than a lot
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Slide 5
Slide 6
Outline
What is Color?
What is Color?
What is Color?
What is Color?
What is Color?
What and Where Subsystems
Outline
Two Great Western
Traditions
Rational Tradition
Mystic (Artistic,
Emotional) Tradition
Plato c. 380 BC
Newton 1672
Lambert 1760
Runge 1803
Goethe 1810
Goethe 1810
Chevreul 1839
Maxwell 1867
von Helmholtz 1859:
Trichromatic color theory
Hering 1874
Munsell 1905
Retinal
Neural
Interconnection
Neural Codes
Milestones
Nowdays
Outline
Antiquity
Middle Age
Leonardo 1510
Renaissance
Masters
Breakthrough in Realism
circa 1430 (according to Hockney)
Rubens beg. of XVII
century
Vermeer mid-XVII century
XIX century Romantic
Painters: Eugène Delacroix
Impressionism
Post-Impressionism
Pointillism
Expressionism
De Stijl and Bauhaus
Post-Modernism
Photo-Mosaics,
Artistic Halftoning
“Layered” pointillism
Outline
Colorimetry: CIE Color
Matching
CIE-XYZ Color Space
The Colors in the
Chromaticity Diagram
Perceptually Uniform
Space: MacAdam
CIE-LAB
Gamut Mapping
Gamut Mapping
Color Pickers: HLS
Device-Dependent
Color
Device-Independent
Color
Outline
Perceptual Phenomena
Studied in Psychology & Neuroscience
The Mach effect
The Cornsweet effect
Summing and Subtracting
Cone Signals
Color opponents wiring
Pointillism
Negative space
Simultaneous Color
Contrast
Chromatic Adaptation
Crispening
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Anchoring vs. Scaling
Slide 74
After-Image-white
After-Image
After-Image-white
Opponent Colors
Light Mixture
Physical color mixture
Spreading
Color Printing
Divisionism
Color blindness
What is Color?
Color blindness
Color blindness test
(Ishihara)
Color blindness test
(Ishihara)
Color blind impressions
Web-Safe Palette
Safe Web Colors for
color-deficient vision
Safe Web Colors for
color-deficient vision
Outline
Differential Filtering
Differential Filtering
Color Shadows
Chromatic Adaptation
Color Shadows
Perception of Space
Perception of Space
Perception of Depth
Perception of Depth
Perception of Motion
Perception of Motion
Chromatic and Achromatic
Visual Acuity
Chromatic and Achromatic
Visual Acuity
Conclusions
Selected Bibliography
Selected Bibliography
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Thank You!