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Merge pull request #2 from radarhere/alpha

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Esteban Gehring 2021-02-09 13:51:58 +01:00 committed by GitHub
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docs/reference/ImageColor.rst
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@ -17,20 +17,10 @@ Color Names
The ImageColor module supports the following string formats:
* Hexadecimal color specifiers, given as ``#rgb``, ``#rgba``, ``#rrggbb`` or
``#rrggbbaa``, with the following placeholders:
- ``r`` red
- ``g`` green
- ``b`` blue
- ``a`` alpha / opacity (can be used in combination with ``mode="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).
``#rrggbbaa``, where ``r`` is red, ``g`` is green, ``b`` is blue and ``a`` is
alpha (also called 'opacity'). For example, ``#ff0000`` specifies pure red,
and ``#ff0000cc`` specifies red with 80% opacity (``cc`` is 204 in decimal
form, and 204 / 255 = 0.8).
* 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