From mboxrd@z Thu Jan 1 00:00:00 1970 From: Samuel Wales Subject: need to increase contrast in all emacs faces for legibility Date: Tue, 10 Dec 2019 20:39:21 -0700 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Return-path: Received: from eggs.gnu.org ([2001:470:142:3::10]:42259) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iesqV-0004nr-Do for emacs-orgmode@gnu.org; Tue, 10 Dec 2019 22:39:28 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iesqT-000371-S0 for emacs-orgmode@gnu.org; Tue, 10 Dec 2019 22:39:27 -0500 Received: from mail-lj1-x22b.google.com ([2a00:1450:4864:20::22b]:44386) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iesqT-00032U-JI for emacs-orgmode@gnu.org; Tue, 10 Dec 2019 22:39:25 -0500 Received: by mail-lj1-x22b.google.com with SMTP id c19so22224219lji.11 for ; Tue, 10 Dec 2019 19:39:25 -0800 (PST) List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Sender: "Emacs-orgmode" To: emacs-orgmode@gnu.org at night, i need much more contrast in my emacs faces in order to increase legibility. during the day i want the same faces i currently have. is it possible to programmatically increase foreground contrast against their background in all faces? i already have the background black or close to it. i have heard that in practice, it is not a question of just increasing brightness. there is an accessibility website that can calculate it but i don't know the url. but even if nobody knows the theory of contrast perception, or whatever applies here, even just increasing foreground brightness of all faces would probably increase legibility. thanks.