Comments on: How to Color Charts Respecting Color Blindness

By: Daniel Flueck

Daniel Flueck — Mon, 04 Jun 2007 19:45:22 +0000

Joe: I suppose I don’t really understand your point. Because if I can’t tell apart one color from the other, it doesn’t help if I can see when one area begins or ends. I still won’t be able to fit the legend to the chart.

Thanks a lot for the link. I’ll need some more time to browse through your book and all the other interesting stuff you offer.

But I also had a look at the Brewer palette with ColorBrewer. I don’t agree that all those color palettes are best for usage respecting color blindness. For example five colors going from lighter to darker on a random map. I have great difficulties to match every entry to its corresponding legend point.

By: Joe Clark

Joe Clark — Sun, 03 Jun 2007 20:06:40 +0000

I dispute that most charts need to use colourblind-safe colours. You just have to be able to tell when one area begins and another ends. If there actually is a need, there is no cause to grope around with homemade or untested solutions; just use the Brewer palette from maps.

http://joeclark.org/book/sashay/serialization/Chapter09.html#p-1540

By: Scott G

Scott G — Sat, 02 Jun 2007 14:52:01 +0000

Great food for thought…

I would like to explore the ‘confusion lines’ you recommend a bit more to see how they impact the charts I am creating right now.