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4. [a11y Discussions](https://www.g2.com/products/a11y/discuss)

[
 ![a11y](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_506eacb52bd253d4beead3799536f8ba/a11y.jpg "a11y")
](/products/a11y/reviews)

# a11y Discussions

This website provides free color contrast analysis tools that will display the color contrast issues of a web page or chosen color-pair; per WCAG 2.1 Guidelines. Color Contrast refers to how bright or dark colors appear against each other on screens; particularly with regard to the relative, gray-scale luminosity as perceived by the human eye. When it comes to website accessibility, the contrast between the text and the text background is a concern for colorblind and other visually impaired users.

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