Ah, indeed that's much more practical than computing the ratios explicitly! Thank you Wolfgang! 

On Wed, 2 Jul 2025, 18:50 Wolfgang Schuster, <wolfgang.schuster.lists@gmail.com> wrote:

Am 02.07.2025 um 14:50 schrieb Florent Michel:
> Hi,
>
> In addition to Mikael's solution, defining the color using the ConTeXt
> function \definecolor seems to work:
>
> \starttext
>
> \definecolor[rose_color_ctx][r=.99609375,g=.796875,b=.99609375]

You can also use hex numbers.

\definecolor [rose_color] [x=FFCCFF]

\starttext
\color[rose_color]{rose_color}
\stoptext

Wolfgang

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