Replace image colors to another

[ivanamar996]

Hi,

I've tried to replace all colors from image to another by using Opaque method, this is code snippet of it:

Target color is :

For source PNG image that I uploaded, the result is not correct since all colors are replaced to gray. And I am confused why this is happening. I also tried to call imagemagick from command line and colors are replaced to the correct red color.

SOURCE IMAGE:

RESULT:

I tried to run image magick command in cmd:
magick source.png -fuzz 30% -fill rgba(214,0,88,85) -opaque black TECH2.png

And result is:

Is there anything that I am doing wrong?

[dlemstra]

It appears that your source image is grayscale. What happens when you change the ColorType of the image to ColorType.TrueColorAlpha at the start?

[ivanamar996]

Thanks a lot, setting ColorType to TrueColorAlpha fixed my issue.