From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Joe Fineman Newsgroups: gmane.emacs.help Subject: Re: about colors Date: Mon, 22 Apr 2013 17:44:32 -0400 Organization: A noiseless patient Spider Message-ID: References: <4DFD0A8F.2050103@sergio.spb.ru> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1366672001 31773 80.91.229.3 (22 Apr 2013 23:06:41 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 22 Apr 2013 23:06:41 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Tue Apr 23 01:06:45 2013 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1UUPop-0000ch-VX for geh-help-gnu-emacs@m.gmane.org; Tue, 23 Apr 2013 01:06:44 +0200 Original-Received: from localhost ([::1]:52691 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UUPoo-00021i-ML for geh-help-gnu-emacs@m.gmane.org; Mon, 22 Apr 2013 19:06:42 -0400 Original-Path: usenet.stanford.edu!news.kjsl.com!feeder.erje.net!eu.feeder.erje.net!eternal-september.org!feeder.eternal-september.org!mx05.eternal-september.org!.POSTED.pool-96-233-17-222.bstnma.east.verizon.net!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 14 Injection-Info: mx05.eternal-september.org; posting-host="pool-96-233-17-222.bstnma.east.verizon.net:96.233.17.222"; logging-data="1022"; mail-complaints-to="abuse@eternal-september.org" User-Agent: Gnus/5.101 (Gnus v5.10.10) Emacs/22.3 (windows-nt) Cancel-Lock: sha1:BviKGpXkWre+Xymnv4MGDHN9fsI= Original-Xref: usenet.stanford.edu gnu.emacs.help:198032 X-Mailman-Approved-At: Mon, 22 Apr 2013 19:06:29 -0400 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:90300 Archived-At: arnaudlaroulette@gmail.com writes: > do anyone know how to get the RGB code for a light a 2700k?? I can get you part way. I happen to have a CIE chromaticity diagram with the blackbody incandescence curve plotted on it. (It's from the Encyclopaedia Britannica, but I dare say you can find it on the Web.) On it, that temperature appears at about x=0.47, y=0.41. There must be some way to get from that to RGB. -- --- Joe Fineman joe_f@verizon.net ||: Marijuana is a dangerous drug. It produces insanity in :|| ||: people who never use it. :||