Some tools, like Colorblind Vision, help businesses and marketers see what their materials look like to colorblind people by simulating various color-vision deficiencies.

WSJ: New Outlook for Colorblindness

After speaking with many traders with color-vision deficiencies, designers of DJ FX Trader, a foreign exchange tool offered by Dow Jones, the publisher of The Wall Street Journal, say they made a point of using icons to supplement color.

WSJ: New Outlook for Colorblindness