Re: [css-houdini-drafts] [css-typed-om] Color conversion and contrast ratio (#989)

@LeaVerou   @atanassov  Hi Lea and Rossen,

Just FYI the contrast methodology is changing in a future version WCAG (3.0) the current code for the new version is very beta, and will have additional capabilities for modeling and predicting contrast perception. 

*    _The following links assume the browser is set to the default normal font size (i.e. in Chrome, font size "Medium (recommended)") and zoom at 100%._

There is a test/example page of the algorithim here: https://www.myndex.com/SAPC/

A description of the methodology is here: https://www.myndex.com/WEB/WCAG_CE17polarity

A description of how _FONT WEIGHT & SIZE_ directly affects contrast separate from the foreground and background colors. This is important to the understanding of perceived contrast and readability:  https://www.myndex.com/WEB/WCAG_CE14weight

And my repository of some work in progress is here: https://github.com/Myndex/SAPC

NOTE: This is all beta, including explanatory texts, and subject to change. The research code name is SAPC-7, but as released will be called APCA (Advanced Perceptual Contrast Algorithm).

Please let me know if you have any questions.

Andy

-- 
GitHub Notification of comment by Myndex
Please view or discuss this issue at https://github.com/w3c/css-houdini-drafts/issues/989#issuecomment-644711130 using your GitHub account

Received on Tuesday, 16 June 2020 11:43:06 UTC