Modulecolour-2.3.7Haskell98

Data.Colour.Ok

Functions for converting Colour values to and from the Oklab space, and convenience functions for the derived Oklch space. See https://bottosson.github.io/posts/oklab/.

4 values

Packagecolour-2.3.7
Exports4
LanguageHaskell98
LicenceMIT
SourceOk.hs

valueokLab

:: Floating a
=> a
L* coordinate (lightness)
-> a
a* coordinate
-> a
b* coordinate
-> Colour a

Returns the colour for given Oklab coordinates, which is a perceptually uniform colour space inspired by CIELAB but which handles blue hues more accurately.

A white point is not specified because Oklab assumes a standard d65 daylight illuminant.

valueokLabView :: Floating a => Colour a -> (a, a, a)

Returns the Oklab coordinates of a colour, which is a perceptually uniform colour space inspired by CIELAB but which handles blue hues more accurately.

A white point is not specified because Oklab assumes a standard d65 daylight illuminant.

valueokLCh

:: Floating a
=> a
L* coordinate (lightness)
-> a
C* coordinate (chroma)
-> a
h* coordinate (hue)
-> Colour a

Constructs a colour from a lightness, chroma, and hue given in LCh polar coordinates correspondong to an Oklab coordinate.

valueokLChView :: RealFloat a => Colour a -> (a, a, a)

Returns the Oklab LCh coordinates of a colour. The lightness coordinate is the same as in Oklab, while the chroma C and hue h are the (a,b)-coordinates expressed in polar form.