This template is within the scope of WikiProject Accessibility, a group of editors promoting better access for disabled or otherwise disadvantaged users. For more information, such as what you can do to help, see the main project page.AccessibilityWikipedia:WikiProject AccessibilityTemplate:WikiProject AccessibilityAccessibility articles
This template is supported by WikiProject Color, a project that provides a central approach to color-related subjects on Wikipedia. Help us improve articles to good and 1.0 standards; visit the wikiproject page for more details.ColorWikipedia:WikiProject ColorTemplate:WikiProject Colorcolor articles
Note the values provided are the reciprocal of those given by the other tool. That's because the other tool reverses the order of the parameters if the foreground color is lighter than the background color, while this template was designed (and is documented) to provide the correct ratio (less than 1). This is to provide more flexibility for the user, who may want to filter dark-on-light contrasts differently than light-on-dark for hardware or environmental differences. In practice, it just means that you have to check that the value is inside a range instead of being less than a specific value (e.g. 0.25<=x<=4.0 instead of x<=4.0). —[AlanM1(talk)]— 17:59, 14 March 2013 (UTC)[reply]