Category:Userboxes with insufficient color contrast

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This category contains userboxes that use a low-contrast color scheme. These userboxes may be difficult for color blind individuals to read, and are inaccessible as a result. To determine if the contrast between the colors on a userbox is sufficient, this online tool can calculate whether or not the colors used fit the standards set by the World Wide Web Consortium (W3C). A color difference of greater than 500 (as displayed in the third column) indicates that the colors are high-contrast, and can be used.