How to find complementary colour for pixel

[Bjoern Schliessmann]

Johny wrote:

> As pictures maybe  different, colour, in the position where I
> write the text, is also different.
> Is there a way how to set the font colour so that it will be seen
> very clearly in the picture?
> For example, if the picture is bright ( for example yellow), the
> font colour should be dark( e.g. black) and vice versa.
> Is there a routine in PIL available  that calculates complementary
> colour for RGB pixel format?

IMHO, this looks weird, especially in complex images. A better
solution is to draw a background box behind the text that has the
image colors, butt low contrast (or saturation, or whatever).

> Can anyone help?

...

Regards,


Björn

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