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Re: resoruces for training

for

From: wolfgang.berndorfer@zweiterblick.at
Date: Dec 4, 2019 3:38PM

First I’d say that if the person was born without any light perception, he
or she needs a concept of what colors and contrasts are. That’s not too
difficult, if you can explain acoustic analogies to the person.

A violin sounds different to a singer or a piano, but rather similar to a
cello. This could be compared to colors and color contrasts.
If a loud singer is accompanied by a silent piano sound, you will understand
the sung text, but not the other way round. This could be compared to the
brightness (luminance) contrast.

Now the blind person can talk about visual contrast just like about acoustic
phenomena. He or she just needs to learn minimum values of contrast in the
guidelines, just like anyone has to, since requested contrasts can’t be seen
intuitively anyway.

Sounds easy and convincing?

Wolfgang

-----Ursprüngliche Nachricht-----
Von: WebAIM-Forum < <EMAIL REMOVED> > Im Auftrag von
Reinhard Stebner
Gesendet: Mittwoch, 4. Dezember 2019 21:07
An: WebAIM Discussion List < <EMAIL REMOVED> >
Betreff: [WebAIM] resoruces for training

Does anyone have any good resources or ideas on how a totally blind person
can present / train others on the guidelines for color (use of) and color
contrast issues? Also, does anyone know of any good and bad examples of for
the color guidelines of WCAG? Thanks for all of your help.
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