Re: Retrieving color names and hex values using list-colors-display for coding purposes

Sent with Proton Mail secure email.

On Saturday, July 18th, 2026 at 1:33 AM, Eli Zaretskii <[email protected]> wrote=
:

> > Date: Fri, 17 Jul 2026 13:22:13 +0000
> > From: uzibalqa <[email protected]>
> > Cc: Heime <[email protected]>, [email protected], help-gnu-ema=
[email protected]
> >
> > If the advice is always to use #RRRRGGGGBBBB, which is also always the =
advice
> > for my cases,  then how (list-colors-display) showing me #RRGGBB follow=
s the
> > advice you described?  To follow your advice, display #RRRRGGGGBBBB, no=
t
> > the currently displayed #RRGGBB.
>=20
> Are you writing list-colors-display?  If not, why is it important that
> it shows 6-digit RGB values?

Because colour-values on the name are in range 0-65535, a range that=20
definitly requires hex RRRR and not hex RR.  The hex value is unique,
consequently using  RR instead of RRRR is incorrect.

Multiple (0-65535) values map to the same #RR value, breaking uniqueness=20
and accuracy.  Colour accuracy matters for contrast calculations, accessibi=
lity,=20
and precise colour matching.  The emphasis on the importance of 6-digit=20
hex values is that they uniquely and accurately represent the colour in=20
the standard hex format.