Chromatic aberration (of the eye)
Blackbody, Full radiator, Planckian radiator
Chromatic adaption
Chromatic valence or 'chromance' diagram
Chromaticity diagram
Chromaticity coordinates
The ratios of each of the tristimulus values of a colour to the sum of the tristimulus values. Chromaticity coordinates for the CIE system are designated x, y and z.
x = X/(X + Y + Z), y = Y/(X + Y + Z), z = Z/(X + Y + Z)
CIE
Commission Internationale de l'Eclairage (International Commission on Illumination).
CIE1964(UVW) diagram
CIE94
CIECAM97c
CIECAM97s
CIELab
CIELuv
Cleanness (paint industry)
Freedom of a colour from grey, black or dirtyness. Similar to chroma in colour spaces such as CIELab.
CMC
The Colour Measurement Committee of the SDC, UK.
CMC(l:c)
CMS
Systems that manage and match colour across devices are called colour management systems (CMS.
CMYK
(C)Cyan, (M)Magenta, (Y)yellow and (K)Black. These are used in the printing ink industry. K is used to represent black as the use of B might be mistaken for blue.
Colorimeter
An instrument that measures colour in terms of tristimulus values.
Colour appearance modeling
Colour blindness
Colour comparators
Colour constancy
The tendency of the colour of an object to remain the same when the colour of the illumination is changed.
Colour difference
The size and character of the difference between two colours described by such terms as redder, bluer, yellower, greener, lighter, darker, cleaner etc. Or by the numerical values computed from a colour difference formula.
Colour difference formula
Colour harmony
Colour match
Condition existing when colours appear the same or nearly so when viewed by a normal observer.
Colour matching functions
The amounts, in any trichromatic system, of the colour stimuli needed to match by an additive mixture monochromatic components of an equi-energy spectrum.
Colour solid
Colour standards
Colour space
A geometric space, usually three dimensional, in which the position of colours can be plotted systematically.
Colour temperature
The temperature usually expressed in kelvins, of a Blackbody radiator that would emit light of the same chromaticity as the source.
Colour temperature (correlated)
Colour tolerance
The maximum allowed colour difference between two colours.
Colour wheel
The visible spectrum of colours arranged in a circle.
COMIC
An acronym for COlorant MIxture Computer. An analog computer produced byDavidson and Hemmendinger to perform formula match predictions to a spectrophotometric curve. which cost about 100000 DM when accompanied by the required number of memory units. This instrument, however, could not allow for the scattering of light by coloured pigments as it used the following simplified form of the Kubelka-Munk equation:
where a, b and c are the amounts of colorants A, B and C.
Complementary colours
Colour stimuli that produce an achromatic stimulus when they are mixed in an additive manner.
Complementary wavelength
Cones
Contrast ratio
A term often used to define the covering (hiding) power of a coating. It is often given as a percent and is detemined by the measure of the lightness (Y tristimulus value) of a coating over black as a percentage of the lightness of the same coating over white.
Crispening effect
Curvature of colour space
Curvilinear chromaticity diagram