There are a number of sites and applications with colorblindness simulators that allow you to see what your visual looks like through colorblind eyes. For example, Vischeck (vischeck.com) allows you to upload images or download the tool to use on your own computer. Color Oracle (colororacle.org) offers a free download for Windows, Linux, or Mac that applies a full-screen color filter independent of the software in use. CheckMyColours (checkmycolours.com) is a tool for checking foreground and background colors and determining if they provide sufficient contrast when viewed by someone having
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