Color Contrast

Color contrast is the difference in brightness between the colors used for foreground and background content. Its applications scope is very wide and includes web pages, desktop and mobile applications, and even texts printed on paper!

With regards to accessibility, ensuring an adequate color contrast is critical, as it makes the content much more readable; this helps people with visual impairments, as well as people with cognitive disabilities. Therefore, depending on the usage scenario, different guidelines to establish which color contrast are available; in this section you can find references to them, as well as pointer to useful tools in order to verify the color contrast in your products.

Resources

Showing results 49 to 60, out of 60.

Vue Axe Next

Vincenzo Rubano
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Kind of a successor to vue-axe, vue-axe-next is an open source library that facilitates automated accessibility testing of web applications developed by leveraging the Vue.JS framework.

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Vue Axe

Vincenzo Rubano
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Vue-axe is an open source library that facilitates automated accessibility testing of web applications developed by leveraging the Vue.JS framework. The library allows to effortlessly integrate axe-core in your vue project.

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React Axe

Vincenzo Rubano
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Primarily developed by Deque-Labs, react-axe is an open source library that facilitates automated accessibility testing of react-based web applications. The library allows to effortlessly integrate axe-core in your react project.

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WAVE - Web Accessibility Evaluation Tool

Vincenzo Rubano
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WAVE is a Web Accessibility evaluation tool developed by webAIM that allows you to evaluate the accessibility of a web page within your browser. It injects icons and visual indicators that provide feedback about the accessibility of your web content, and facilitates human evaluation and pointing to useful resources that can help you understand and fix the identified issues.

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Achecker Web Accessibility Checker

Vincenzo Rubano
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Being one of the “oldest kids in town”, Achecker Web Accessibility Checker is a web service that allows you to test the accessibility of your web pages and applications, as well as performing markup and CSS validation.

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Axe CLI

Vincenzo Rubano
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Primarily developed by Deque Labs, axe-cli is a command line tool that (quoting the official documentation) “quickly runs accessibility tests on a web page”. As its name implies, automated accessibility testing is performed by leveraging the axe-core framework.

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Axe Dev Tools

Vincenzo Rubano
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Axe Dev Tools is a free browser extension provided by Deque Systems, INC. that allows to perform automated accessibility testing of web pages and applications. This extension performs automated tests, identifying issues and providing remediation guidance to help you fix them whenever possible.

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Axe Core

Vincenzo Rubano
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Axe-Core is an automated accessibility testing engine implemented as a framework that allows you to “evaluate” the accessibility of web pages or web application screens. This allows it to run automated accessibility tests in various contexts, including a browser, command-line tools, and continuous-integration testing environments.

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Accessibility Conformance Testing (ACT) rules

Vincenzo Rubano
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Also known as “WCAG 2 test rules”, Accessibility Conformance Testing (ACT) rules describe how to test conformance to Web Content Accessibility Guidelines (WCAG) success criteria. They are primarily intended for usage by developers of evaluation tools and test methodologies.

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Authoring Tools Accessibility Guidelines (ATAG) 2.0

Vincenzo Rubano
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Authoring Tool Accessibility Guidelines (ATAG) 2.0 is a W3C recommendation that provides guidelines for designing web content authoring tools that are both more accessible to people with disabilities and designed to enable, support, and promote the production of more accessible web content by all authors.

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Web Content Accessibility Guidelines (WCAG) 2.1

Vincenzo Rubano
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Web Content Accessibility Guidelines (WCAG) 2.1 lie the foundation to evaluate the accessibility of web content in a “technology-agnostic” way: this means that they are abstract enough so as to be applied no matter what technologies and tools are used to produce web content, yet be “practically enough” to be tested to check for content conformance.

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