- From: David MacDonald <david100@sympatico.ca>
- Date: Tue, 14 May 2019 10:04:03 -0400
- To: Wayne Dick <wayneedick@gmail.com>
- Cc: GLWAI Guidelines WG org <w3c-wai-gl@w3.org>, Tom Jewett <tom@knowbility.org>
- Message-ID: <CAAdDpDYBzADxqDjd9h3pVRqVs0fxmjsPSsTyoJzbNbC_HVXO0w@mail.gmail.com>
This is excellent Dick. I support any effort to take our algorithm to the next level. Cheers, David MacDonald *Can**Adapt* *Solutions Inc.* Tel: 613-806-9005 LinkedIn <http://www.linkedin.com/in/davidmacdonald100> twitter.com/davidmacd GitHub <https://github.com/DavidMacDonald> www.Can-Adapt.com <http://www.can-adapt.com/> * Adapting the web to all users* * Including those with disabilities* If you are not the intended recipient, please review our privacy policy <http://www.davidmacd.com/disclaimer.html> On Fri, May 10, 2019 at 2:54 PM Wayne Dick <wayneedick@gmail.com> wrote: > As usual, I forgot the URL for Tom's tutorial. > http://colortutorial.design/index.html > Best, Wayne > > On Fri, May 10, 2019 at 11:51 AM Wayne Dick <wayneedick@gmail.com> wrote: > >> Hi All, >> For those interested in the color / contrast discussion Tom has developed >> a nice introduction to the state of things right now. >> >> It is easy to follow and correct. It gives you some nice tools to see >> things. >> >> Tom and I think the concepts of luminance and contrast need review. Here >> are some issues we need to understand. >> 1. Is RGB as measured on current devices meaningful in terms of sRGB? >> 2. Are we using correct formulas for luminance and contrast. >> 3. Has the IEEE taken any recent steps to clarify how to compute cross >> platform computations of luminance? >> 4. How do our members like Adobe address cross platform color issues, and >> can this be applied in a reasonable way to computing contrast for >> accessibility? >> >> Whatever formulation we ultimately choose we can always write a converter >> our key points remain constant like 4.5:1. >> >> Well read, watch and enjoy, >> Best, Wayne >> >> >> >> >> >>
Received on Tuesday, 14 May 2019 14:04:42 UTC