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  • Tammy LaBiche-Henley thinks this is interesting:

Roughly 8% of men (including my husband and a former boss) and half a percent of women are colorblind. This most frequently manifests itself as difficulty in distinguishing between shades of red and shades of green. In general, you should avoid using shades of red and shades of green together. Sometimes, though, there is useful connotation that comes with using red and green: red to denote the double-digit loss you want to draw attention to or green to highlight significant growth. You can still leverage this, but make sure to have some additional visual cue to set the important numbers apart so you aren’t inadvertently disenfranchising part of your audience. Consider also using bold, varying saturation or brightness, or ad...

From

Cover of Storytelling with Data: A Data Visualization Guide for Business Professionals

Note

colorblind colors - shades of red and green