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RE: Re[2]: Colour Luminosity/Contrast for form inputs/controls/components

From: Chakravarthula, Srinivasu <srchakravarthula@informatica.com>
Date: Wed, 2 Nov 2016 09:55:47 +0000
To: "josh@interaccess.ie" <josh@interaccess.ie>, WCAG <w3c-wai-gl@w3.org>
Message-ID: <CY4PR03MB2438A25A4E1A706AC03E84E2C8A00@CY4PR03MB2438.namprd03.prod.outlook.com>
Agree, Josh. My mistake, I was thinking about text on buttons etc., though I had radio buttons and check boxes in mind.

Thank you,

Best regards,
-Vasu
--
Srinivasu Chakravarthula
Lead Accessibility Consultant
Informatica<http://informatica.com/> Business Solutions Pvt Ltd.,
Work: +91-80-4020-3760 | Cell: +91 99008 10881
Website<http://srinivasu.org/> | Accessibility Blog<http://serveominclusion.com/> | LinkedIn<http://linkedin.com/in/srinivasuc> | Twitter<http://twitter.com/CSrinivasu>

From: josh@interaccess.ie [mailto:josh@interaccess.ie]
Sent: Wednesday, November 02, 2016 3:23 PM
To: Chakravarthula, Srinivasu <srchakravarthula@informatica.com>; WCAG <w3c-wai-gl@w3.org>
Subject: Re[2]: Colour Luminosity/Contrast for form inputs/controls/components

Hi Srinivasu,

No, I do think we need a better bar/clearer guidance here.
The closest I can find it G183: Using a contrast ratio of 3:1 with surrounding text and providing additional visual cues on focus for links or controls where color alone is used to identify them [1]

This could arguably cover a situation where there is a custom radio button that needs to be selected. However, the luminosity ration seems low to me.

Also I don't feel that the SCs are clear on the importance of having good colour luminosity for UI components.

So this may be something that the LVTF is looking at already but I want to see what the group feels about this so thanks for the feedback.

Josh

[1] https://www.w3.org/TR/2016/NOTE-WCAG20-TECHS-20161007/G183


------ Original Message ------
From: "Chakravarthula, Srinivasu" <srchakravarthula@informatica.com<mailto:srchakravarthula@informatica.com>>
To: "josh@interaccess.ie<mailto:josh@interaccess.ie>" <josh@interaccess.ie<mailto:josh@interaccess.ie>>; "WCAG" <w3c-wai-gl@w3.org<mailto:w3c-wai-gl@w3.org>>
Sent: 02/11/2016 09:41:01
Subject: RE: Colour Luminosity/Contrast for form inputs/controls/components

Hello Josh,
While that would be helpful, causes a bit of problem to WG too if we are more directive.

I think wording something like “contrast ratio between foreground and background” would say it all and applicable to text, UI components etc.,

Reason I’m saying it technology keeps changing every day and we cannot really predict what would come tomorrow.

Makes sense?

Best regards,
-Vasu
--
Srinivasu Chakravarthula
Lead Accessibility Consultant
Informatica<http://informatica.com/> Business Solutions Pvt Ltd.,
Work: +91-80-4020-3760 | Cell: +91 99008 10881
Website<http://srinivasu.org/> | Accessibility Blog<http://serveominclusion.com/> | LinkedIn<http://linkedin.com/in/srinivasuc> | Twitter<http://twitter.com/CSrinivasu>

From: josh@interaccess.ie<mailto:josh@interaccess.ie> [mailto:josh@interaccess.ie<mailto:josh@interaccess.ie>]
Sent: Wednesday, November 02, 2016 3:07 PM
To: WCAG <w3c-wai-gl@w3.org<mailto:w3c-wai-gl@w3.org>>
Subject: Colour Luminosity/Contrast for form inputs/controls/components

I'm looking at contrast requirements for a client regarding form controls, radio buttons etc for a client, and WCAG does not seem to specify them. It seems 'implied' that 1.4.3 is relevant and there are techniques that touch on the subject (G183, G182, G111) but nothing definitive like.

"If you have an UI component/input control, or radio button that a VIP user needs to see to select/interact with the luminosity requirements are x."

Am I missing something? Or is this something we need to address?

Thanks

Josh
Received on Wednesday, 2 November 2016 09:56:29 UTC

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