UI for colorblind users?

[wking]

The current red/green is probably not the best choice, and Wikipedia suggests red/blue or yellow/blue. And regardless of which colors work best for most folks, we want to be able to handle folks who are completely colorblind too. Things which we need non-color ways to represent:

• Issue done-ness (currently red/green for the border, dependent indicator, and outgoing edges).
• Blockers vs. dependencies (currently a red/green pie, #12).

I'm not sure what good non-color indicators would look like. Maybe something a dashed card border for open issues? A square dep-indicator for blockers? Or an underlined number for blockers? Or…?

If any designers have advice on a more accessible palette and or non-color indicators, I'm all ears.

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depends on #51 depends on #61

[jbenet]

• I wonder if we can use a color blind config?
  • would this be too annoying?
• Red / Green are used universally in a bunch of products (particularly github) and i would like to keep the association.
  • are there shades that are less confusable?
• whatever we choose, we should test it with something like this: https://en.wikipedia.org/wiki/Color_blindness#/media/File:Safe_Chart_Colors-F99-FEC-ADD.jpg

[wking]

I still think the main point of this issue should be getting non-color indicators for done-ness and deps vs. blockers, but for kicks here is how the current scheme looks (using the Newman tool, since the vischeck engine seems to be down):

And here are three colors from the fourth logo on #14:

[wking]

On Fri, Dec 02, 2016 at 11:42:33PM -0800, W. Trevor King wrote:

• Blockers vs. dependencies (currently a red/green pie, #12).

I've spun off two non-circle blocker shape ideas into #61, if folks want to weigh in on those.