Chromatic IssuesChromatic IssuesThe Trichromatic TheoryThe Trichromatic Theory

Color PickerColor PickerThe Color GamutThe Color Gamut

GlareGlareColor BlindnessColor Blindness

The CIE Color SystemThe CIE Color System

A set of Equations that A set of Equations that allow predictions ofallow predictions ofmatching.matching.

Used in photo printing,Used in photo printing,TV and film.TV and film.

Wyszecki & StilesWyszecki & Stiles(1967)(1967)

The Color GamutThe Color Gamut The range of colors The range of colors

reproducible by any reproducible by any systemsystem

The Effect of Illuminance on The Effect of Illuminance on GamutGamut

0

0.1

0.2

0.3

0.4

0.5

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0.7

0.8

0.9

0 0.2 0.4 0.6 0.8

x

y

In DarkWith Lights onWith Lights on and 30% Luminance Level

IlluminanceIlluminance

Agostini & Bruno (1996)Agostini & Bruno (1996) Accuracy of the perceived stimulus is affected Accuracy of the perceived stimulus is affected

by the amount of illuminance.by the amount of illuminance. D. F. Neri (1990)D. F. Neri (1990)

Combination of light and gamut changed Combination of light and gamut changed chromaticitychromaticity

Request close windows and turn off Request close windows and turn off unnecessary light unnecessary light

Do not use subtle color differencesDo not use subtle color differences

Color BlindnessColor BlindnessDescription

Color BlindnessColor Blindness

Color BlindnessColor Blindness

Color BlindnessColor Blindness

How to handleHow to handle

Screening questions?Screening questions? Large sample and random assignmentLarge sample and random assignment Pre-test on color blindPre-test on color blind