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RE: High Contrast support with Browsers.

From: Jonathan Avila <jon.avila@levelaccess.com>
Date: Wed, 16 May 2018 15:27:53 +0000
To: "Sean Murphy (seanmmur)" <seanmmur@cisco.com>, "Patrick H. Lauke" <redux@splintered.co.uk>, Jim Allan <jimallan@tsbvi.edu>
CC: WAI-IG <w3c-wai-ig@w3.org>
Message-ID: <BY2PR03MB393DAD816E6ED52446AD451F1920@BY2PR03MB393.namprd03.prod.outlook.com>
Sean, it is my opinion that not only the UI should change but that the colors chosen in high contrast mode should be passed through at the option of the user to the web page so the web page itself can be presented using that color scheme.  This could take several different paths such as the browser applying the user’s colors through a user style sheet or another approach.

Jonathan


From: Sean Murphy (seanmmur) [mailto:seanmmur@cisco.com]
Sent: Wednesday, May 16, 2018 1:17 AM
To: Jonathan Avila; Patrick H. Lauke; Jim Allan
Cc: WAI-IG
Subject: RE: High Contrast support with Browsers.

I would like to drill down a bit and seperate the Web browser view port from the Browser UI.
1. The Web Browser View point I would assume is the responsibility of the web site.
2. While the UI of the browser (dialogs, alert messages, menus, ETC) that controls or you interacte with the browser is the vendor issue.

Based upon the responses to my original question and correct me if I am wrong. In a nut shell, the actual Browsers UI isn’t honouring the OS high contrast schemes.






Regards
Sean Murphy
Accessibility Software ENGINEER
seanmmur@cisco.com
Tel: +61 2 8446 7751

Cisco Systems, Inc.
The Forum 201 Pacific Highway
ST LEONARDS
2065
Australia
cisco.com

http://www.cisco.com/go/accessibility


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From: Jonathan Avila <jon.avila@levelaccess.com>
Sent: Tuesday, 15 May 2018 2:23 AM
To: Patrick H. Lauke <redux@splintered.co.uk>; Jim Allan <jimallan@tsbvi.edu>; Sean Murphy (seanmmur) <seanmmur@cisco.com>
Cc: WAI-IG <w3c-wai-ig@w3.org>
Subject: RE: High Contrast support with Browsers.

I’d also say that the high contrast offered by Chrome is not sufficient for the needs of users with low vision.  It’s an SVG filter that is applied and is not always effective and doesn’t provide the flexibility that Windows high contrast mode offers.  It sometimes makes content have less contrast and a whole page filter can’t solve specific contrast situations on every part of a page.  Windows High contrast mode offers the ability for users to customize the color of certain types of widgets, text, and backgrounds with the colors that work best for them.

Apple’s macOS has an interesting increase contrast feature which seems to work with standard components and increases the contrast of essential lines and text to above 7:1 ratio.  But it does not go as far as Windows high contrast mode in its flexibility.

Jonathan

Jonathan Avila
Chief Accessibility Officer
Level Access
jon.avila@levelaccess.com<mailto:jon.avila@levelaccess.com>
703.637.8957 office

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From: Patrick H. Lauke [mailto:redux@splintered.co.uk]
Sent: Monday, May 14, 2018 11:50 AM
To: Jim Allan; seanmmur@cisco.com<mailto:seanmmur@cisco.com>
Cc: WAI-IG
Subject: RE: High Contrast support with Browsers.

Noting that on certain operating systems (iOS, Android, macOS, others?), high contrast is a low-level setting that affects ALL output at the operating system level (what’s sent to the video card/monitor), while on others (Windows, others?), it’s a setting that software needs to be specifically coded to read and then support/implement.

P

From: Jim Allan<mailto:jimallan@tsbvi.edu>
Sent: 14 May 2018 16:34
To: seanmmur@cisco.com<mailto:seanmmur@cisco.com>
Cc: WAI-IG<mailto:w3c-wai-ig@w3.org>
Subject: Re: High Contrast support with Browsers.

​Chrome does not respect High Contrast Mode (HCM​) in the OS. You must use an extension
https://chrome.google.com/webstore/detail/high-contrast/djcfdncoelnlbldjfhinnjlhdjlikmph?hl=en

respect OS HCM
IE , EDGE - https://support.microsoft.com/en-us/help/13862/windows-use-high-contrast-mode

FireFox https://support.mozilla.org/en-US/kb/accessibility-features-firefox-make-firefox-and-we#w_using-a-high-contrast-theme

Safari https://www.apple.com/accessibility/mac/vision/





On Tue, May 8, 2018 at 9:23 PM Sean Murphy (seanmmur) <seanmmur@cisco.com<mailto:seanmmur@cisco.com>> wrote:
All,

General query in relation to high contrast with browsers. Should the browser honor the OS high contrast settings or should the CSS override the OS high contrast? My view is the browser should honor the OS high contrast settings. Not sure if this is the case now.


Regards
Sean Murphy
Accessibility Software ENGINEER
seanmmur@cisco.com<mailto:seanmmur@cisco.com>
Tel: +61 2 8446 7751

Cisco Systems, Inc.
The Forum 201 Pacific Highway
ST LEONARDS
2065
Australia
cisco.com<http://cisco.com>

http://www.cisco.com/go/accessibility


Think before you print.
This email may contain confidential and privileged material for the sole use of the intended recipient. Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive for the recipient), please contact the sender by reply email and delete all copies of this message.
http://www.cisco.com/c/en/us/about/legal/terms-sale-software-license-agreement/company-registration-information.html





--
Jim Allan, Accessibility Coordinator
Texas School for the Blind and Visually Impaired
1100 W. 45th St., Austin, Texas 78756
voice 512.206.9315    fax: 512.206.9452 http://www.tsbvi.edu/
"We shape our tools and thereafter our tools shape us." McLuhan, 1964

Received on Wednesday, 16 May 2018 15:28:26 UTC

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