Red-Green-Blue is for additive color (light) Red-Blue-Yellow and Cyan-Magenta-Yellow are for subtractive color (paint, ink, etc)
On Mon, Mar 19, 2012 at 06:15:15PM +0100, Nick Arnoeyts wrote: > You're probably talking about something else, but isn't it supposed to be > Red-Green-Blue and not Red-Blue-Yellow? > > Op 19 maart 2012 17:10 schreef Ian Mallett <geometr...@gmail.com> het > volgende: > > On Mon, Mar 19, 2012 at 9:49 AM, Russell Jones <russell.jo...@gmail.com> > wrote: > > Great news :) I liked IYOCGwP and have mentioned it here before now. > BTW, on page 34 of the new book you write "(Red, blue, and yellow are > the primary colors for paints and pigments, but the computer monitor > uses light, not paint.)" > The primary colours for pigment and paint are cyan, yellow and > magenta, no? > Russell > > There is a "color space" that defines all possible colors. "Primary > colors" are the colors we choose as basis vectors. Both red-blue-yellow > and cyan-magenta-yellow are valid basis vectors; the former more often > used in painting, the latter more often used in printing. > Ian
