A11Y - Color Blindness Empathy Test is a Firefox extension designed to assist web developers in understanding color blindness effects. This tool aims to create more accessible web content by simulating how color-blind users perceive color and contrast. Its primary feature allows developers to test their websites against various types of color blindness, ensuring that designs are user-friendly for everyone.

The application operates on a subscription-based model, making it accessible for ongoing use. By integrating this tool into their workflow, developers can gain valuable insights into color choices and their impact on usability. Overall, A11Y serves as an essential resource for those committed to improving web accessibility through informed design choices.