This tool provides a custom control for theme developers to integrate real-time color contrast checking into their site's appearance settings. It is designed for developers building themes who need to ensure text and background color combinations meet accessibility guidelines directly within the customization interface.

Real-time contrast checking: The control calculates and displays the contrast ratio between two selected colors as they are adjusted, providing immediate feedback. Developer integration: It is implemented as a standard customizer control class, meant to be included directly within a theme's codebase, not as a standalone plugin. Accessibility compliance: It helps developers meet WCAG (Web Content Accessibility Guidelines) standards for text readability by flagging insufficient contrast. Pairs with color controls: The tool is intended to be used alongside two standard color picker controls, monitoring the relationship between a background and a text color setting. Theme review ready: The code is structured to be compliant with the official theme submission guidelines for public theme repositories.