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If you are going to use color to convey information, always include a text alternative. Color alone is not enough to show off information. For example, if color blind users or people with low vision looking look at a chart may not be able to read the data or struggle to differentiate the data sections. They may also struggle to know which color belongs to which section.
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This pie chart for the “Most Popular Sports in the USA” only uses color to represent the data. A person who is color-blind may not be able to tell the difference between the colors. Therefore they cannot read the data. |
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