Re: Graphics contrast

Great news. Always good to have the view of folks who have to implement an
SC.

On Nov 10, 2016 4:22 AM, "Alastair Campbell" <acampbell@nomensa.com> wrote:

> Hi everyone,
>
> I disrupted our design team’s meeting this morning to run this SC past
> them and see if it was understandable and feasible.
>
> At least with the description I gave it (primarily around what ‘important
> information’ meant) they all though it was quite reasonable.
>
> The examples from the page were really helpful, so I think we should pick
> three or four to use in the description and/or techniques.
>
> One of the team also provided an example of how to shrink a large icon
> down whilst retaining a 3px stroke width, which I’ve added to the
> description:
> https://www.w3.org/WAI/GL/low-vision-a11y-tf/wiki/Informational_Graphic_
> Contrast_(Minimum)#Description
>
> The main technique for icons is stroke thickness if the contrast is
> between 3 and 4.5 to 1.
>
> The three main techniques that jumped out as most useful for charts and
> diagrams were:
> - Labels, the most useful across various circumstances, especially for
> avoid colour-alone issues.
> - Borders, trickier to do but useful in some cases.
> - Patterns, trickiest to get right as you also run into contrast issues
> there unless you have labels.
>
> There are some examples (like topographical maps) where you cannot have
> strong contrasting lines, so the key there would be to convey what is
> needed through labels or explanations outside of the graphic. E.g. label
> the top of a hill, or explain the implications in text.
>
> Most importantly nobody panicked, so I think we’re almost there!
>
> -Alastair
>
>
>