- From: Alastair Campbell <acampbell@nomensa.com>
- Date: Thu, 10 Nov 2016 10:21:58 +0000
- To: LVTF - low-vision-a11y <public-low-vision-a11y-tf@w3.org>
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
Received on Thursday, 10 November 2016 10:22:33 UTC