How to Use This Advanced Checker
We've integrated a professional color picker that supports multiple formats. Click the colored square to open the palette.
- HEX: Standard web colors (e.g., #FF0000)
- RGB: Red Green Blue values (e.g., rgb(255, 0, 0))
- HSL: Hue Saturation Lightness (e.g., hsl(0, 100%, 50%))
Click the "Save" button inside the picker to store colors for your current session.
Why Use a Contrast Checker for Accessibility?
Web accessibility isn't just a nice-to-have; it's a legal requirement in many countries. Using a contrast checker ensures that users with visual impairments (such as color blindness or low vision) can read your content without straining their eyes.
The Web Content Accessibility Guidelines (WCAG 2.1) set specific mathematical formulas for legibility. Our tool automates this math for you.
Understanding the Scores
- AA Level: The industry standard. Requires a ratio of at least 4.5:1 for normal text and 3.0:1 for large text (18pt+ or 14pt bold).
- AAA Level: The gold standard. Requires a ratio of 7.0:1 for normal text and 4.5:1 for large text.
How to Improve Color Contrast
If your color contrast checker result shows a "FAIL," try darkening the text color or lightening the background color. Even a slight adjustment can bump your ratio from a failing 4.4 to a passing 4.5.