From: Drew Adams <drew.adams@oracle.com>
To: Gian Uberto Lauri <saint@eng.it>, emacs-devel@gnu.org
Subject: RE: solarized
Date: Thu, 17 Sep 2020 15:56:23 +0000 (UTC) [thread overview]
Message-ID: <40227585-65d2-4804-a3bb-a46285c23377@default> (raw)
In-Reply-To: <24419.5630.619374.863012@mail.eng.it>
> RS> By inverse I mean, the color that is to white as color X is to
> RS> black. I don't know what formula is needed for that, but I
> RS> presume someone does.
>
> I think it is something that could be described as
>
> the value of each member of the inverse triplet is #FF minus
> the value of the corresponding member in the original triplet,
> that is "computes the complementary color"
>
> but I fear that other things impact on the perception of the colors,
> i.e. the monitor settings, cultural background (don't be surprised, it
> is human perception after all, and it's strongly influenced by
> psycological components including the name you give to colors, see the
> Himbas in Africa, and Japan - I think that they see shades of grue
There is the human-perception consideration.
And as others have pointed out, that is heavily
influenced by things such as ambient lighting.
As for color complementing, without taking such
perception considerations into account, there
is already existing Emacs code for getting the
complement (inverse, if you prefer) of a color.
There are functions to complement each of hue,
saturation, and value. There are functions to
complement all (the combination) together, for
color name, RGB numeric, or RGB hex values.
Standard library color.el has only the latter
(fixed combination formula, based on RGB/name).
Library hexrgb.el has all of them.
https://www.emacswiki.org/emacs/download/hexrgb.el
next prev parent reply other threads:[~2020-09-17 15:56 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-14 3:48 solarized Richard Stallman
2020-09-15 8:29 ` solarized Protesilaos Stavrou
2020-09-15 9:14 ` solarized Yuri Khan
2020-09-15 10:16 ` solarized Protesilaos Stavrou
2020-09-15 13:39 ` solarized Theodor Thornhill
2020-09-15 14:05 ` solarized Gerry Agbobada
2020-09-15 14:40 ` Theme generator (was: solarized) Stefan Monnier
2020-09-15 16:26 ` Theme generator Arthur Miller
2020-09-15 20:14 ` Stefan Monnier
2020-09-15 20:35 ` Stefan Monnier
2020-09-15 20:44 ` Arthur Miller
2020-09-16 1:49 ` Theme generator (was: solarized) Tim Cross
2020-09-17 0:25 ` chad
2020-09-17 14:25 ` Theme generator Arthur Miller
2020-09-16 5:03 ` Theme generator (was: solarized) Richard Stallman
2020-09-15 20:28 ` solarized Protesilaos Stavrou
2020-09-15 20:50 ` solarized Praharsh Suryadevara
2020-09-16 5:05 ` solarized Richard Stallman
2020-09-16 8:27 ` solarized Protesilaos Stavrou
2020-09-16 13:38 ` solarized Arthur Miller
2020-09-17 3:57 ` solarized Richard Stallman
2020-09-17 7:53 ` solarized Gian Uberto Lauri
2020-09-17 15:56 ` Drew Adams [this message]
2020-09-18 4:08 ` solarized Richard Stallman
2020-09-18 4:08 ` solarized Richard Stallman
2020-09-18 16:44 ` solarized Drew Adams
2020-09-17 14:11 ` solarized Arthur Miller
2020-09-17 23:39 ` solarized Tim Cross
2020-09-18 4:13 ` solarized Richard Stallman
2020-09-18 5:49 ` solarized Tim Cross
2020-09-18 6:43 ` solarized Arthur Miller
2020-09-16 13:06 ` solarized Arthur Miller
2020-09-17 3:53 ` solarized Richard Stallman
2020-09-15 11:26 ` solarized Göktuğ Kayaalp
2020-09-15 12:15 ` solarized Elias Mårtenson
2020-09-15 12:56 ` solarized Göktuğ Kayaalp
2020-09-16 1:30 ` solarized Tim Cross
2020-09-16 10:21 ` solarized Göktuğ Kayaalp
2020-09-16 12:53 ` solarized Arthur Miller
2020-09-16 22:09 ` solarized Tim Cross
2020-09-17 14:29 ` solarized Arthur Miller
2020-09-18 13:32 ` solarized Stefan Kangas
2020-09-18 15:53 ` solarized Arthur Miller
2020-09-18 16:03 ` solarized Arthur Miller
2020-09-19 4:00 ` solarized Richard Stallman
2020-09-20 20:18 ` solarized Bozhidar Batsov
2020-09-15 12:05 ` WCAG AAA and Emacs themes Dmitry Gutov
2020-09-15 20:22 ` Protesilaos Stavrou
-- strict thread matches above, loose matches on Subject: below --
2020-09-16 18:07 solarized Protesilaos Stavrou
2020-09-17 14:55 ` solarized Arthur Miller
2020-09-17 15:27 ` solarized Arthur Miller
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