From LOJBAN%CUVMB.bitnet@YaleVM.YCC.YALE.EDU Sat Mar 6 22:53:05 2010 Received: from YALEVM.YCC.YALE.EDU by MINERVA.CIS.YALE.EDU via SMTP; Fri, 30 Jul 1993 05:48:21 -0400 Received: from YALEVM.CIS.YALE.EDU by YaleVM.YCC.Yale.Edu (IBM VM SMTP V2R2) with BSMTP id 1708; Fri, 30 Jul 93 05:47:08 EDT Received: from YALEVM.CIS.YALE.EDU (NJE origin LISTSERV@YALEVM) by YALEVM.CIS.YALE.EDU (LMail V1.1d/1.7f) with BSMTP id 8287; Fri, 30 Jul 1993 05:47:08 -0400 Date: Fri, 30 Jul 1993 10:47:02 +0100 Reply-To: Colin Fine Sender: Lojban list From: Colin Fine Subject: Re: Color words (was: Re: comments on the batch of lujvo et To: Erik Rauch Status: RO X-Status: X-From-Space-Date: Ukn Jul 30 05:48:22 1993 X-From-Space-Address: C.J.Fine@BRADFORD.AC.UK Message-ID: Chris Handley asseverates: ++++++++++> I agree with most of this. If you think of the HLS cone (a cone with the point down) then the 'colours' can be arranged around the perimeter with white at the centre of the disc on the top and black at the point at the bottom. Then one specifies a hue by (essentially) an angle, saturation by a number in the range [0,1] (fractional distance from centre) and brightness by distance from the point, again [0,1]. In this system 'white/whitish' as a sort of synonym for 'pale' or 'unsaturated' becomes reasonable. >++++++++++++ It's usual to use a double cone (points at top and bottom), because as the brightness increases beyond the mid-point towards white, the maximum perceived saturation decreases, until at white there is no freedom of saturation or hue. Colin