contrast-ratio calculates the contrast ratio between two CSS colors. This tool helps developers ensure their web content meets the Web Content Accessibility Guidelines (WCAG) for readability. The primary objective is to provide a simple and accurate calculation of contrast, assisting in creating accessible websites for all users. The tool implements the contrast ratio calculations as defined by WCAG.
The tool is straightforward to use and provides precise contrast ratio calculations. It supports both normal and large text, aligning with WCAG guidelines. The code is robust and has been used as the foundation for a public website, demonstrating its reliability in a real-world application. It offers a clear understanding of contrast compliance levels.
- Color Input: Accepts CSS color values (hex, rgb, rgba, hsl, hsla).
- WCAG Compliance: Calculates contrast ratios against WCAG AA and AAA standards.
- Output: Displays the calculated contrast ratio and compliance status.
- Accessibility Focus: Designed specifically for web content accessibility.
- Simple Usage: Easy to integrate into various development workflows.
- Cross-Browser Compatibility: Functionality applicable across different browsers.
- Clear Reporting: Presents contrast results in an easily understandable format.
The project is mature, having been developed in 2012 and actively maintained. It has a solid release history and a reasonable level of community support, although current activity is limited. The code is well-documented, but the project is no longer actively developing a public website. The core calculation logic remains tested and reliable.
This project is beneficial for web developers, designers, and accessibility specialists who need to ensure their web content meets WCAG contrast requirements. It enables them to create more inclusive and usable websites for individuals with visual impairments. By providing a simple and accurate contrast ratio calculation, it helps avoid accessibility issues and ensures content is readily readable by all users.