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Is there a way to define colors using \definecolor for pdflatex with transparency similar to this approach?

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    color and transparency are independant settings. You can set both but there is no dedicated interface to set them together. Why do you need it? Mar 20, 2021 at 13:36
  • @UlrikeFischer Thanks for your answer. Acually I was just curious, if this is possible in LaTeX, since I could not find some detailed information about it. I was planning to define the white color with no opacity for the zero value in a colormap. So the workflow then is defining the color and afterwards putting the color in the desired environment and add the opacity afterwards.
    – Excelsior
    Mar 20, 2021 at 21:50

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