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To avoid creating inconveniences and even dangers for the more than 200 million people worldwide with color vision deficiency, care must be taken when choosing color schemes for everyday items such as maps, road signs, web sites, and power indicator lights. A new user-oriented design system called “Color Universal Design” (CUD) has been developed for this purpose. In CUD, color schemes are based on what can easily be identified by people with all types of color vision rather than what is aesthetically pleasing.
 The growing importance of CUD has given rise to the need for tools that can simulate how color is perceived by different people. The FlexScan SX2761W, SX2461W, L797-U, ColorEdge CG241W, and CG222W let designers check in real time how their color schemes appear to those with color vision deficiency.
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