Re: master 68ae6fa: Improved light/dark colour predicate (bug#41544)

[<tomas@tuxteam.de>]

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On Fri, Jun 12, 2020 at 05:50:32PM +0200, Mattias Engdegård wrote:
> 11 juni 2020 kl. 21.22 skrev Yuri Khan <yuri.v.khan@gmail.com>:
> 
> > My equipment [...] says that shade of gold in fact
> > performs okay in all four scenarios
> 
> I have no reason to doubt your observations. Let's try a plebiscite!
> 
>                       * * *
> 
> Dear Emacs developer or user,
> 
> Please load the attached code (any Emacs version), and run M-x contrast-compare with various cutoff values on your favourite system, to find what value is best for readability of the colour names (first column).
> 
> Colours with luminance (last column) below the cutoff will be use white text, others black. It is mainly Emacs in graphical (non-TTY) mode that is of interest.
> 
> Please reply (to emacs-devel or to me) the following pieces of information:
> 
> * the cutoff value you found optimal

You mean: where the color name is most readable against all
backgrounds? 0.375 (although 0.325 gives fine results too)

> * system information: window system, screen, anything you think is relevant

X on Gnu/Linux, thinkpad X230 with the cheaper screen (no IPS)

> * whether you use a light or dark background in your Emacs

Dark Emacs (but not too dark, #333333-ish)

Cheers
-- tomás

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