Am 06.05.24 um 10:41 schrieb Hans van der Meer via ntg-context:
I would like to use a transparent version of an existing color. Thus
\definecolor[transparentcolor][color,t=0.2,a=1]
instead of
\definecolor[transparentcolor][r=..,g=..,b=..,t=0.2,a=1]
because I do not know the rgb values of the color that must be made
transparent, only its name.
How to accomplish?
Interesting task. Perhaps via multitone colors?
https://wiki.contextgarden.net/Spot_Colors
Otherwise you can use \definetransparency and \starttransparent around
\color (or \startcolor).
Hraban
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