- From: Tab Atkins Jr. <jackalmage@gmail.com>
- Date: Mon, 30 Aug 2010 07:56:09 -0700
- To: Alan Gresley <alan@css-class.com>
- Cc: fantasai <fantasai.lists@inkedblade.net>, Boris Zbarsky <bzbarsky@mit.edu>, www-style list <www-style@w3.org>
On Mon, Aug 30, 2010 at 6:54 AM, Alan Gresley <alan@css-class.com> wrote: > Alan Gresley wrote: > [snip] >>> >>> The grayish band in the middle of the gradient is roughly the same as the >>> midway point between yellow and white / black in the 3d-color-prism. It >>> would actually be half the value in intensity. > > [snip] > > In other words, the midway point of this gradient, > > > <div style="background:-moz-linear-gradient(left, yellow, > transparent)"></div> > > > is the same as this opaque color. > > > <div style="background:#808000;opacity:0.5;"></div> Right, that's what you get if you use non-premultiplied colors (postmultiplied?). That's not what we want, which is why dbaron is suggesting using premultiplied colors, so that the halfway point in that transition will be #80800080. ~TJ
Received on Monday, 30 August 2010 14:57:03 UTC