Re: Captcha and Colour Blindness

Thank you, John, for this comment. Your point is indeed valid, and we
will say more about collor accessibility challenges in a future revision of our W3C Note:

[Inaccessibility of CAPTCHA](http://www.w3.org/TR/turingtest)

Best,
Janina

John Mathieson writes:
> Hello - I am one of the 7% of men and 0.5% of women who are colour blind -
> until today I have never had a problem reading Captcha numbers and letters.
> But today, I came across several in a row I could not read, due to my
> colour blindness.
> 
> You should be aware that Adobe has published a colour palette that is
> visible to almost all colour blind people. You should definitely be using
> this - even though one can refresh the picture, why would you use something
> you know will not be visible to such a large number of people in the first
> place?
> 
> Many thanks
> John Mathieson
> 
> https://helpx.adobe.com/creative-cloud/adobe-color-accessibility-tools.html

-- 

Janina Sajka (she/her/hers)
Accessibility Consultant https://linkedin.com/in/jsajka

The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
Co-Chair, Accessible Platform Architectures	http://www.w3.org/wai/apa

Linux Foundation Fellow
https://www.linuxfoundation.org/board-of-directors-2/

Received on Thursday, 24 April 2025 11:28:55 UTC