Convert image in greyscale to other color levels

A very quick and conveniet way to convert greyscale images to other color values is by using the “+level-colors” operator in ImageMagic. As a simple example, imagine the image below has to be converted from greyscale (black/white) to blue/yellow.

quetelet(Note: The person in the picture is Adolphe Quetelet: astronomer, statistician and sociologist. One of the very first PhD graduates of Ghent University)

The conversion can be done with the simple command below:

convert quetelet.jpg +level-colors darkblue,yellow quetelet2.png

And gives the following result:q

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