Data.Prizm.Color

Data.Prizm.Color exports all of the specific color space modules and types for blending colors, convenience blending (tint and shade), and adjusting the hue, lightness, or chroma of a given color. You should import this module.

Note that blending colors in a polar-coordinate color space, such as CIELCH, preserves the saturation and brightness of the colors being interpolated better than blending in RGB. It also turns out to be an effective even when converting from RGB to CIELCH, blending, then converting back again!

Here is an excellent blog post by someone discussing the differences: Improved Color Blending.

Color Transformations

class BlendableColor c where

A blendable color.

Minimal complete definition

interpolate

Methods

interpolate :: Percent -> (c, c) -> c

Linear interpolation of a color with another color, applying a weight.

(<~>) :: c -> c -> c

Blend two BlendableColor colors using an interpolation weight of 50%.

shade :: PresetColor c => c -> Percent -> c

Shade a color by blending it using a weight and the PresetColor black.

tint :: PresetColor c => c -> Percent -> c

Tint a color by blending it using a weight and the PresetColor white.

Instances

BlendableColor LCH

Methods

interpolate :: Percent -> (LCH, LCH) -> LCH

(<~>) :: LCH -> LCH -> LCH

shade :: LCH -> Percent -> LCH

tint :: LCH -> Percent -> LCH

class AdjustableColor c where

An adjustable color.

Minimal complete definition

lightness, chroma, hue

Methods

lightness :: c -> Percent -> c

Adjust the lightness of a color

chroma :: c -> Percent -> c

Adjust the chroma of a color

NB: not all color spaces will support this easily but it should be possible to convert into a color space that does then convert back

hue :: c -> Percent -> c

Adjust the hue of a color

Instances

AdjustableColor LCH

Methods

lightness :: LCH -> Percent -> LCH

chroma :: LCH -> Percent -> LCH

hue :: LCH -> Percent -> LCH

Preset Colors

class PresetColor c where

Preset white and black for a color space.

Minimal complete definition

white, black

Methods

white :: c

black :: c

Instances

PresetColor RGB

Methods

white :: RGB

black :: RGB

PresetColor LCH

Methods

white :: LCH

black :: LCH

Individual Color Spaces

CIE Color Space

module Data.Prizm.Color.CIE

RGB Color Space

module Data.Prizm.Color.RGB

Package Types (re-exports the individual color space type modules too)

module Data.Prizm.Types