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G18: Ensuring that a contrast ratio of at least 4.5:1 exists between text (and images of text) and background behind the text Index of Color Contrast Samples The above documentation is transcluded from Template:Color contrast ratio/doc .
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For accessibility, WCAG 2.0 AA guidelines require a contrast ratio of 3 or larger for large text, and 4.5 or larger for normal sized text. In the default mode, color2 and color3 are white and black, and the selected color pair will always have a contrast ratio greater than 4.58.
If you are colour-blind yourself, check your revised image with a colour-sighted person to confirm the meaning is intact. The following utilities may be of use in determining whether a revised image is distinguishable to colour-blind users. Typically they take a web page or image file as an input, and render a colour-blind simulated image as ...
For example, should be using a background of F6D4E6 (the color of the body in File:Pink Panther.png) rather than E466A9 (the color of the background in that image). A representative color useful in a navbox is often already present in an article's infobox (if included), and these are sometimes specified programmatically.
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Draw: add shapes or text to an image. Decorate: add a border or frame to an image. Special effects: blur, sharpen, threshold, or tint an image. Animation: assemble a GIF animation file from a sequence of images. Text and comments: insert descriptive or artistic text in an image. Image identification: describe the format and attributes of an image.
Every image should have a brief description text. This enables blind Wikipedians using a screen reader to know what the image is about. "Star" is the descriptive word in this case. [[:File:Cscr-featured.svg]] Add a colon before Image to create a link to an image. File:Cscr-featured.svg