- achromatic colour
- black, white or grey
- advancing colour
- a hue that produce the illusion of being relatively nearer to the observer
- analogous colours
- colours that are close to each other on the colour wheel
- artists’ colour wheel
- a misleading name for the painters’ colour wheel
blue often refers to a colour with a bias towards cyan)
- both light and saturated
- (unfortunately) almost a synonym for luminance
- very bright—both light and fully saturated
having to do with hue and saturation as opposed to luminance.
A chromatic colour is any colour other than black, white or grey.
(seeachromatic and monochromatic)
- Commission Internationale de l’Éclairage
- cyan, magenta and yellow—the subtractive primaries
- cyan, magenta, yellow and black—the subtractive primaries with black for increased density
- colour constancy
the illusion that the colour of an object remains the same
when illuminated by light sources with differing colours, for example candlelight and daylight
- Two colours are complementary if they produce a mid grey when they are mixed in equal quantities.
The contrast between two colours is the difference in their luminance.
High contrast between text and background is essential for legibility.
- Cascading Style Sheet
- low in luminance
- both dark and saturated
- an inability to distinguish green
- dots per inch
- extraspectral hue
- a hue that is visible to the human eye but does not occur in the spectrum of visible light
(colloquially, 'green' often refers to a colour with a bias towards cyan)
- high key
a colour scheme or a photograph may be described as high key if it uses predominantly light colours
- the hue-luminance-saturation system for characterising a colour
the hue-saturation-brightness system for characterising a colour—a
modified form of the HLS system used by many computer programs
the underlying colour of the colour—orange, blue-green or whatever—as
opposed to its luminance or saturation
- International Colour Consortium
- Johannes Itten
- low key
a colour scheme or a photograph may be described as low key if it uses predominantly dark colours
- lines per inch
- a measure of how light or dark a colour is
- metameric pair
- two distinct spectral distributions that produce equal colour stimuli
- varying only in luminance, not hue
- monochromatic image
This term usually refers to an achromatic image
black and white photograph or other greyscale image)
but it could have a distinct hue like a sepia-toned photograph.
- neutral colour
- an achromatic colour or one very close to achromatic; a highly desaturated colour
- Sir Isaac Newton
- painters’ colour wheel
- the colour wheel arranged so that complementary colours are no longer opposite each other
- both light and desaturated
- any colour from a light red to a light magenta
- primary colours
- This is an ambiguous term that suggests unmixed colours from which other colours are mixed.
- an inability to distinguish red
(colloquially, 'red' often refers to a colour with a bias towards magenta)
- retreating colour
- a hue that produce the illusion of being relatively further away from the observer
- red, green and blue—the additive primaries
Adding black to a colour will decrease both the luminance and the saturation.
The result is a shade of the colour.
- simultaneous contrast
the optical effect in which adjacent colours influence each other,
each appearing to take on some of the other’s complementary colour
- tertiary colours
- Seetertiary hues
- tertiary hues
A tertiary hue is one that is produced by an unequal mixture of two primaries.
In other words, a tertiary hue is any hue other than the primaries and secondaries.
Adding white to a colour will increase the luminance and decrease the saturation.
The result is a tint of the colour.
- traditional colour wheel
- Seepainters’ colour wheel
- tristimulus colours
- Seeadditive primaries
- an inability to distinguish blue
- WorldWide Web Consortium
- white balance
the adjustment on a digital camera to compensate for
differences in the colour temperature of various light sources