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Easy color manipulation for Python.

Project description

Authors: Mike Spindel
Version: 0.2

Palette makes it easy to perform simple operations on colors and to convert between different color systems and representations.

Sample Usage

Initialize a color object using whatever representation is convenient:

>>> c = Color("#0a0bcc")
>>> c = Color.from_rgb(255, 255, 255, a=0.5)
>>> c = Color(hls=(0.2, 0.1, 0.1))

Manipulate colors:

>>> a = Color("#aaaa00")
>>> a.lighter()
>>> a.darker(amt=0.4)

Measure Colors:

>>> a = Color("#aaaa00")
>>> b = Color("#000000")
>>> a.w3_contrast_ratio(b)
>>> a.w3_contrast_test(b)
>>> a.luminance

Convert Representations:

>>> a = Color("#aaaa00")
>>> a.rgb8.r
>>> a.rgb8.r = 30
>>> tuple(a.rgb8)
(30.0, 170.0, 0.0)
>>> tuple(a.hls)
(0.30392156862745096, 0.3333333333333333, 1.0)
>>> str(a.hls)
'hls(0.30392156862745096, 0.3333333333333333, 1.0)'
>>> a.hex
>>> a.css
'rgb(170, 170, 0)'

Convert sRGB:

>>> a = Color("#aaaa00")
>>> a.workspace
>>> a.rgb == a.srgb
>>> a.linear_rgb
{'r': 0.4019777798321958, 'b': 0.0, 'g': 0.4019777798321958}
>>> a.linear_rgb = (.2, .3, .3)
>>> a.rgb
(0.48452920448170694, 0.5838314900602575, 0.5838314900602575)

Where Does Palette Fit In?

There already exist several good python libraries for manipulating color. Perhaps the two most notable are Grapefruit and python-colormath. Palette hopes to fill a niche somewhere between the two.

With respect to grapefruit, palette intends to have:

  • a simpler interface for common tasks
  • more sophistication with respect to RGB working spaces, illuminants, etc.
  • PEP-8 compliance

With respect to python-colormath, palette intends to have:

  • a simpler interface for common tasks; potentially at the expense of deep support for non-RGB colors.
  • more utilities that are primarily useful for web development
  • support for fewer colorspaces. Palette isn’t particularly interested in completionism.
  • no dependency on numpy

Project details

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