unofficial mirror of help-gnu-emacs@gnu.org
 help / color / mirror / Atom feed
From: Christopher Dimech <dimech@gmx.com>
To: Yuri Khan <yuri.v.khan@gmail.com>
Cc: Thibaut Verron <thibaut.verron@gmail.com>,
	Heime <heimeborgia@protonmail.com>,
	Stefan Monnier <monnier@iro.umontreal.ca>,
	help-gnu-emacs@gnu.org
Subject: Re: Introducing face in comments for various modes
Date: Mon, 12 Dec 2022 16:55:10 +0100	[thread overview]
Message-ID: <trinity-ad3f57b2-232a-454e-9923-f06056f955c7-1670860510454@3c-app-mailcom-bs04> (raw)
In-Reply-To: <CAP_d_8XcWMqFNzvoyKeJ13jYhEpxCfm9Vd1zSKb0hZJ67DmOww@mail.gmail.com>


> Sent: Tuesday, December 13, 2022 at 3:22 AM
> From: "Yuri Khan" <yuri.v.khan@gmail.com>
> To: "Thibaut Verron" <thibaut.verron@gmail.com>
> Cc: "Heime" <heimeborgia@protonmail.com>, "Stefan Monnier" <monnier@iro.umontreal.ca>, help-gnu-emacs@gnu.org
> Subject: Re: Introducing face in comments for various modes
>
> On Mon, 12 Dec 2022 at 17:53, Thibaut Verron <thibaut.verron@gmail.com> wrote:
> 
> > > If you use "modus-vivendi" for org-mode, the colours are all almost white,
> > > a big problem particularly when you fold the org headings.
> >
> > I don't like dark backgrounds, but it seems perfectly readable to me.
> 
> Heime has a point. The complaint is not about *readability* of
> modus-vivendi’s colors against the background. It is about
> *distinction* between levels of Org headings, i.e. ability to
> distinguish a level 3 heading from a level 4 just by color.
> 
> This is a nontrivial thing to solve, by the way. It’s very easy to
> fall in the trap “WCAG level AAA prescribes a contrast ratio of at
> least 7:1; I’ll make my primary foreground and all my accent
> foreground colors exactly 7:1 against the background so all will be
> readable”. Yes, but this way they are all the same luminance, and by
> that token all very similar in some sense. A color-blind person might
> even not be able to distinguish hues and rely on luminance alone to
> tell colors apart.
> 
> As far as I can tell, WCAG does not give any guidance as to
> distinction between foreground colors, except for “thou shalt not make
> the user rely solely on color”.
 
For modus-themes I suggested a foreground implementation based on a colour
wheel, using a tricolour scheme for fixing adjacent colours.  A technique that
work very well, improving on the original modus-themes colours.

With such metric, one can have about 8 colours, which you can recycle over again. 




  parent reply	other threads:[~2022-12-12 15:55 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-11 15:35 Introducing face in comments for various modes Heime
2022-12-11 17:40 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-12  2:24   ` Heime
2022-12-12  3:00     ` Heime
2022-12-12  8:49       ` Thibaut Verron
2022-12-12  9:21         ` Heime via Users list for the GNU Emacs text editor
2022-12-12  9:58           ` Thibaut Verron
2022-12-12 10:20             ` Heime
2022-12-12 10:50               ` Thibaut Verron
2022-12-12 11:55                 ` Heime
2022-12-12 12:17                   ` Thibaut Verron
2022-12-12 14:46                     ` Heime
2022-12-12 15:22                 ` Yuri Khan
2022-12-12 15:38                   ` Thibaut Verron
2022-12-12 15:55                   ` Christopher Dimech [this message]
2022-12-12 16:07                   ` Christopher Dimech
2022-12-12 17:44                   ` Stefan Monnier
2022-12-13  5:20                     ` Christopher Dimech
2022-12-12 15:22           ` Stefan Monnier
2022-12-13  7:52           ` Jean Louis
2022-12-13  8:04             ` Heime
2022-12-13  8:30               ` Heime
2022-12-13  9:35                 ` Thibaut Verron
2022-12-13  9:46                   ` Heime
2022-12-13 10:05                     ` Thibaut Verron
2022-12-13 10:24                       ` Christopher Dimech
2022-12-13 10:40                       ` Heime
2022-12-13 10:45                         ` Thibaut Verron
2022-12-13 10:49                           ` Heime
2022-12-13 15:00                           ` Heime
2022-12-13 12:37                     ` Jean Louis
2022-12-13 14:00                       ` Heime
2022-12-13 12:36                 ` Jean Louis
2022-12-13 13:46                   ` Heime
2022-12-13 12:35               ` Jean Louis
2022-12-13  8:17             ` Christopher Dimech
2022-12-13 19:19               ` Jean Louis
2022-12-12 15:20         ` Stefan Monnier

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://www.gnu.org/software/emacs/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=trinity-ad3f57b2-232a-454e-9923-f06056f955c7-1670860510454@3c-app-mailcom-bs04 \
    --to=dimech@gmx.com \
    --cc=heimeborgia@protonmail.com \
    --cc=help-gnu-emacs@gnu.org \
    --cc=monnier@iro.umontreal.ca \
    --cc=thibaut.verron@gmail.com \
    --cc=yuri.v.khan@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).