Re: Checking text on image colour contrast compliance (when a colour gradient is applied)

My team uses TPGi's Colour Contrast Analyser as well. The eyedropper
feature is a critically useful part of that tool, since gradients and
filters can really shift a CSS-set color to a vastly different color. The
one drawback I have found with CCA's eyedropper is that it can be difficult
to get an accurate reading with small/thin elements. The magnification
aspect of the eyedropper tends to give a pixel-by-pixel view of the
element, including any edge blur, resulting in a bunch of different colors
to choose from. Increasing the zoom in my browser usually helps with that.

Best,
Annie

On Fri, Jun 25, 2021 at 4:03 AM Louise Lister <Louise.Lister@iop.org> wrote:

>
>
> Hello,
>
>
>
> Please would anyone be able to recommend a good tool to check contrast on
> the brand story images that have a filter applied. We currently have a
> homepage image slot which applies a darker colour gradient over an image to
> allow the text on top of it to stand out.  The text can also be in
> different sizes.
>
>
>
> I’ve tried WCAG contrast checker but that doesn’t seem to allow for the
> gradient and tried Chrome colour contrast analyser instead. I don’t think
> that gives me a definitive picture on whether I am compliant other than the
> contrast on some text has a better outline than other bits of text.
>
>
>
> If there’s any other options people can suggest that would be amazing!
>
>
>
> Kind regards
>
> Louise
>
>
>
>
>
>
>
>
>
>
> ------------------------------
> This email (and attachments) are confidential and intended for the
> addressee(s) only. If you are not the intended recipient please immediately
> notify the sender, permanently and securely delete any copies and do not
> take action with it or in reliance on it. Any views expressed are the
> author's and do not represent those of IOP, except where specifically
> stated. IOP takes reasonable precautions to protect against viruses but
> accepts no responsibility for loss or damage arising from virus infection.
> For the protection of IOP's systems and staff emails are scanned
> automatically..
>
> Institute of Physics. Registered charity no. 293851 (England & Wales) and
> SCO40092 (Scotland)
> Registered Office:  37 Caledonian Road, London, N1 9BU
> <https://goo.gl/maps/DUHbKcbzuUN2>
>
> Your privacy is important to us. For information about how IOP uses your
> personal data, please see our Privacy Policy
> <https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.iop.org%2Fprivacy%2Findex.html&data=02%7C01%7C%7C6716aa3c6fd84da5102808d5c0b234a0%7Cf9ee42e6bad04e639115f704f9ccceed%7C0%7C0%7C636626793962820374&sdata=RI6OT4MumRlklNzF5i2M9ZxS6P%2FxxLg%2FJwcnMJ%2B0480%3D&reserved=0>
>
> ------------------------------
>


-- 
Annie Heckel

Lead Accessibility Auditor
Online ADA <https://onlineada.com/>