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Re: Color contrast (Minimum)

From: Ta, Duc <duc.ta.740@my.csun.edu>
Date: Tue, 16 Aug 2016 15:42:42 -0400
Message-ID: <CAOcfqATezvNYtvygB95hRSohhp9wEC9pxZMOu99CcOZU0kx1CQ@mail.gmail.com>
To: Elizabeth Pyatt <ejp10@psu.edu>
Cc: IG - WAI Interest Group List list <w3c-wai-ig@w3.org>
Here is the picture of

[image: Inline image 1]


But when applied black and white (greyscale) effect:

[image: Inline image 2]



Sorry for any confusion here.



On Tue, Aug 16, 2016 at 3:40 PM, Ta, Duc <duc.ta.740@my.csun.edu> wrote:

> The color code for it is #CC0000 which clear indicates the contrast ratio
> is 3.6 : 1. My question is if a person only see black and white which is
> the applied effect then does the text considered to be a failure or we can
> say it pass. Or may be I overthink the issue here.
>
>
> Regards,
> Duc Ta
>
> On Tue, Aug 16, 2016 at 3:20 PM, Elizabeth Pyatt <ejp10@psu.edu> wrote:
>
>> So what were the original color values for the reds?
>>
>> I’m trying to understand how the contrast algorithm is effected when the
>> example becomes black and white.
>> If it’s a luminosity scale (i.e. values only are measured), then
>> theoretically shifting or removing the hue should not matter. If it does,
>> there is an issue that needs to be investigated.
>>
>> Hope this makes sense.
>>
>> Best
>> Elizabeth
>>
>>
>> > On Aug 16, 2016, at 3:06 PM, Andrew Kirkpatrick <akirkpat@adobe.com>
>> wrote:
>> >
>> > From: "Ta, Duc" <duc.ta.740@my.csun.edu>
>> > Date: Tuesday, August 16, 2016 at 13:53
>> > To: Andrew Kirkpatrick <akirkpat@adobe.com>
>> > Cc: WAI-IG <w3c-wai-ig@w3.org>
>> > Subject: Re: Color contrast (Minimum)
>> >
>> > The actual color is dark red background and the text is red. However,
>> when I check black and white mode, it turns out to be that so i am not sure
>> whether I should consider it as a failure or I will say it is decent and
>> move on.
>> >
>> >
>> > Best,
>> > Duc Ta
>>
>> =-=-=-=-=-=-=-=-=-=-=-=-=
>> Elizabeth J. Pyatt, Ph.D.
>> Instructional Designer
>> Teaching and Learning with Technology
>> Penn State University
>> ejp10@psu.edu, (814) 865-0805 or (814) 865-2030 (Main Office)
>>
>> 3A Shields Building
>> University Park, PA 16802
>> http://www.personal.psu.edu/ejp10/psu
>> http://tlt.psu.edu
>>
>>
>
>
> --
>
> --------------------------------
>
> Duc Ta
>
> IT Consultant
>
> Tel:   (323) 412-4894
>
> www.dtaconsulting.org
>



-- 

--------------------------------

Duc Ta

IT Consultant

Tel:   (323) 412-4894

www.dtaconsulting.org


image.png
(image/png attachment: image.png)

image.png
(image/png attachment: 02-image.png)

Received on Tuesday, 16 August 2016 19:43:16 UTC

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