.. py:module:: PIL.ImageColor
.. py:currentmodule:: PIL.ImageColor
:py:mod:`~PIL.ImageColor` Module
The :py:mod:`~PIL.ImageColor` module contains color tables and converters from CSS3-style color specifiers to RGB tuples. This module is used by :py:meth:`PIL.Image.new` and the :py:mod:`~PIL.ImageDraw` module, among others.
The ImageColor module supports the following string formats:
Hexadecimal color specifiers, given as
#rgb
,#rgba
,#rrggbb
or#rrggbbaa
, with the following placeholders:r
redg
greenb
bluea
alpha / opacity (can be used in combination withmode="RGBA"
in :py:mod:`~PIL.ImageDraw`)
Examples:
#ff0000
specifies pure red.#ff0000aa
specifies pure red with an opacity of 66.66% (aa = 170, opacity = 170/255).
RGB functions, given as
rgb(red, green, blue)
where the color values are integers in the range 0 to 255. Alternatively, the color values can be given as three percentages (0% to 100%). For example,rgb(255,0,0)
andrgb(100%,0%,0%)
both specify pure red.Hue-Saturation-Lightness (HSL) functions, given as
hsl(hue, saturation%, lightness%)
where hue is the color given as an angle between 0 and 360 (red=0, green=120, blue=240), saturation is a value between 0% and 100% (gray=0%, full color=100%), and lightness is a value between 0% and 100% (black=0%, normal=50%, white=100%). For example,hsl(0,100%,50%)
is pure red.Hue-Saturation-Value (HSV) functions, given as
hsv(hue, saturation%, value%)
where hue and saturation are the same as HSL, and value is between 0% and 100% (black=0%, normal=100%). For example,hsv(0,100%,100%)
is pure red. This format is also known as Hue-Saturation-Brightness (HSB), and can be given ashsb(hue, saturation%, brightness%)
, where each of the values are used as they are in HSV.Common HTML color names. The :py:mod:`~PIL.ImageColor` module provides some 140 standard color names, based on the colors supported by the X Window system and most web browsers. color names are case insensitive. For example,
red
andRed
both specify pure red.
.. py:method:: getrgb(color) Convert a color string to an RGB tuple. If the string cannot be parsed, this function raises a :py:exc:`ValueError` exception. .. versionadded:: 1.1.4
.. py:method:: getcolor(color, mode) Same as :py:func:`~PIL.ImageColor.getrgb`, but converts the RGB value to a greyscale value if the mode is not color or a palette image. If the string cannot be parsed, this function raises a :py:exc:`ValueError` exception. .. versionadded:: 1.1.4