- From: Glenda Sims <glenda.sims@deque.com>
- Date: Mon, 14 Nov 2016 23:36:26 -0500
- To: Jim Allan <jimallan@tsbvi.edu>
- Cc: public-low-vision-a11y-tf <public-low-vision-a11y-tf@w3.org>
- Message-ID: <CAH2ngEQRsWNu7S0kHaxhjSTxGYuz8zBYZsE_qMCrwBtTud0UZA@mail.gmail.com>
Jim, Alastair, David, Jonathan Avila, et al I agree! I've just published (in the wiki) the David/Alastair version with some additional Goodwitch and Avila modifications. Jonathan, I"m not clear on the intent of the 3 seconds for allowing temporary poor contrast. Were you thinking 3 seconds "on load of a page"? Or were you thinking of 3 seconds "on scrolling". I'm just now sure how the 3 seconds will work...I'm learning towards leaving out the temporary exception. G glenda sims | team a11y lead | deque.com | 512.963.3773 *web for everyone. web on everything.* - w3 goals On Mon, Nov 14, 2016 at 10:20 AM, Jim Allan <jimallan@tsbvi.edu> wrote: > Glenda, > I like the new wording with one exception. It is more concise and > structured. > The exception is the phrase "A mechanism is available". Borders and focus > is something the Author/Developer can fix. Until the browsers step up and > fix the default presentation of the form borders, I think authors must fix > the borders they can. To me "a mechanism is available" says the devs can > say border contrast is a user problem and they can fix them with user style > sheets or some other mechanism. > > wording more in line with WCAG 1.4.3 would be better for me > > Visual presentation of the following have a contrast ratio of at least > 4.5:1 against the immediate surrounding background : > > > - important (non-text) information in an interactive image; > - input elements or the border(s) of input elements; > - focus and select indicators; > > except for the following which have a contrast ratio of at least 3:1. > > > - disabled interactive elements; > - thicker lines: where the minimum width of the line is at least > 3px; > - focus Indicators for an interactive logo image; > > > > On Fri, Nov 11, 2016 at 8:48 AM, Glenda Sims <glenda.sims@deque.com> > wrote: > >> Oh wonderful LVTF, >> >> David MacDonald and Alastair Campbell have closely reviewed the proposed >> WCAG SC for Interactive Element Contrast (Minimum) at >> https://www.w3.org/WAI/GL/low-vision-a11y-tf/wiki/Contrast_(Minimum) >> >> And I think they have made a fabulous suggestion for rewording, that >> makes it easier to read (and understand) this proposed SC, while >> simulatenously maintaing all the of the meaning and intent. >> >> The current (long winded) wording is: >> >> >> 1. The visual presentation of important (non-text) information in an >> interactive image has a contrast ratio of at least 4.5:1 against the >> immediate surrounding background. >> 2. The visual presentation of a disabled interactive element has a >> contrast ratio of at least 3:1 against the immediate surrounding background. >> 3. The visual presentation of input elements or the border(s) of >> input elements has a contrast ratio of at least 4.5:1 against the immediate >> surrounding background, except for the following: >> - Medium Width Border for Input Elements: A medium width border >> (or wider) for input elements has a contrast ratio of at least 3:1 against >> the immediate surrounding background; >> 4. The visual presentation of focus indicators and selected >> indicators has a contrast ratio of at least 4.5:1 against the immediate >> surrounding background, except for the following: >> - Medium Focus Indicator: Medium focus indicator has a contrast >> ratio of at least 3:1 against the immediate surrounding background; >> - Medium Selected Indicator: Medium selected indicator has a >> contrast ratio of at least 3:1 against the immediate surrounding >> background;. >> - Focus Indicator for an interactive logo image: Focus indicator >> for an interactive logo image has a contrast ratio of at least 3:1 against >> the immediate surrounding background. >> >> The rewording proposed by David MacDonald & Alastair Campbell is: >> >> A mechanism is available to ensure the visual presentation of the >> following have a contrast ratio of at least 4.5:1 against the immediate >> surrounding background : >> >> >> - important (non-text) information in an interactive image; >> - input elements or the border(s) of input elements; >> - focus and select indicators; >> >> except for the following which have a contrast ratio of at least 3:1. >> >> >> - disabled interactive elements; >> - thicker lines: where the minimum width of the line is at least >> 3px; >> - focus Indicators for an interactive logo image; >> >> I'm in 100% favor of changing the wording to what David/Alastair have >> proposed. But before I do that, I wanted to give y'all a chance to give me >> feedback. If you are in favor of this change, can you respond with +1? If >> you are opposed...can you respond with a -1 and help us understand what you >> think would be better? >> >> Thanks much, >> G >> >> P.S. I'll hold off on making this change on the wiki until Monday Nov >> 14th at noon central time. >> > > > > -- > Jim Allan, Accessibility Coordinator > Texas School for the Blind and Visually Impaired > 1100 W. 45th St., Austin, Texas 78756 > voice 512.206.9315 fax: 512.206.9264 http://www.tsbvi.edu/ > "We shape our tools and thereafter our tools shape us." McLuhan, 1964 >
Received on Tuesday, 15 November 2016 04:37:01 UTC