Replace colour range

/ Published in: Bash
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This snippet shows how to replace the colours in a monochrome image, i.e. one which only contains two colours and the range of hues between them.

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  1. # Converting white on blue to black on beige:
  2. convert source.png -level-colors white,\#200070 +level-colors black,\#FFF8E0 dest.png
  3. # Converting white on blue to black on white:
  4. convert source.png -level-colors white,\#200070 dest.png
  5. # Converting black on white to white on blue:
  6. convert source.png +level-colors white,\#200070 dest.png


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