On November 1 Garr Reynolds posted on his Presentation Zen blog about Using Kuler to Create Color Themes. As shown above, the bar chart in his last example can be used to illustrate a potential problem with using Kuler.
I called it Christmas camouflage graphics, or how to lose 5% of your audience (the men with red-green color blindness). You can catch these problems by using a tool called Vischeck to preview your colors.
Most people will see lots of contrast between the salmon and green bars, but to a deuteranope they are almost identical. In some pathological cases you can get a trifecta where three of the five colors in a Kuler palette will be almost identical.
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