Why open a store that customers can’t enter? Same goes for graphics. Why create a graphic that people can’t see?
Creating graphics for the color-blind is like constructing buildings for the disabled. If a designer neglects special-needs individuals, their creation will be denied its largest audience.
According to our WSJ guide, about 1 out of 10 men are color-blind, so a graphic not designed with consideration for color-challenged individuals could alienate a lot of viewers.
The text discusses some rules of thumb to create color-blind-friendly graphics, e.g. avoiding red-green color charts. Here’s another tool, a color-blind simulator that converts images into what color blind people see: http://www.colblindor.com/coblis-color-blindness-simulator/
One could upload a graphic into the color-blind simulator to see if it accessible for everyone. It’s not that much work.
Ok, so you may like the idea of checking the color-blind-friendliness of your graphs, but will you actually complete an extra step and upload your graphics?
I guess that depends on how big of an audience you want.