Web AIM Contrast
Check color contrast ratios for WCAG accessibility.
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What is Web AIM Contrast?
WebAIM Contrast is an open-source tool designed to evaluate the contrast ratio between foreground and background colors on websites. This tool helps developers and designers ensure their content meets Web Content Accessibility Guidelines (WCAG) standards for text and graphical elements. The primary purpose of WebAIM Contrast is to identify color contrast issues that can affect readability for users with visual impairments. It is used by web developers, designers, and accessibility professionals who need to comply with accessibility standards. The tool solves the problem of ensuring that text and UI components are sufficiently distinguishable from their backgrounds, which is critical for web accessibility. By providing contrast ratios and compliance levels, it helps users make informed decisions about color choices. The tool is particularly useful for those who need to meet specific WCAG guidelines, such as AA or AAA compliance levels. It also supports various color formats, including RGB hexadecimal and color pickers, making it versatile for different use cases. The tool is part of the broader WebAIM suite, which focuses on web accessibility. WebAIM Contrast is a specific tool within this ecosystem that addresses color contrast, a critical aspect of accessibility. It is used in conjunction with other WebAIM tools like WAVE, which provides a more comprehensive evaluation of web accessibility. The tool is essential for ensuring that websites are accessible to all users, including those with disabilities. By providing detailed contrast ratios and compliance information, it helps users create more inclusive web content. The tool's open-source nature allows for customization and integration into other workflows, making it a valuable resource for developers and designers who prioritize accessibility in their projects.
How it works
WebAIM Contrast provides contrast ratios but does not account for other aspects of accessibility, such as text size or font weight. It is important to consider these factors in addition to color contrast when ensuring overall accessibility. The tool may not be suitable for evaluating complex UI components that require more detailed analysis. The tool's reliance on user input means that incorrect color values can lead to inaccurate results. Users should verify the accuracy of the colors they input to ensure reliable contrast ratio calculations. Additionally, the tool does not provide recommendations for alternative color combinations, so users may need to experiment with different options to find compliant solutions.
How to use it
- 1Use the WebAIM Contrast tool to complete your task.
- 2Use the WebAIM Contrast tool to complete your task.
- 3Use the WebAIM Contrast tool to complete your task.
- 4Use the WebAIM Contrast tool to complete your task.
What it can do
- contrast checker
Use cases
Assumptions and limitations
Assumptions
- source: https://webaim.org/resources/contrastchecker/
- license: Open source
- privacy: Opens an external demo
Limitations
- External demo — opens a third-party website that you do not control.
- License status not stated — verify usage terms before commercial use.
- Relies on an external source (webaim.org); availability depends on that service.
- Focused on the calculators category: Check color contrast ratios for WCAG accessibility..
Understanding the result
Check color contrast ratios for WCAG accessibility.
Tool details
- Clearly flagged when a network request is needed.
- No account, no sign-up, and no tracking of your content.
- Powered by (MIT).
- Built with
- (https://webaim.org/resources/contrastchecker/)
- License
- MIT
- Runs locally
- No — requires a network request
- Verification
- Not yet verified
- Input
- Query
- Output
- Text
Built with https://webaim.org/resources/contrastchecker/. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.
- Built with
- License
- MIT
Open-source project
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References
- / — GitHub Repository
Upstream project · GitHub