Color Palette Contrast Ratio Calculator
Color Palette Contrast Ratio Calculator: Accessibility in Web Design
Ensure your web design meets accessibility standards with this Contrast Ratio Calculator. Enter foreground and background colors (hex format), then click Calculate to determine the contrast ratio and WCAG compliance. Ideal for designers and developers!
How It Works
Enter two colors in hex format (e.g., #000000 for black, #FFFFFF for white), then click “Calculate” to compute the contrast ratio. The calculator displays the ratio, WCAG compliance for normal and large text, and step-by-step calculations, scrolls to the result, and offers options to copy or share your results.
Color Palette Contrast Ratio Calculator
Result
Steps
About Color Palette Contrast Ratio Calculator
The Color Palette Contrast Ratio Calculator computes the contrast ratio between two colors to ensure accessibility compliance in web design, following WCAG standards. It’s a valuable tool for designers and developers.
How to Use
- Enter the foreground color in hex format (e.g., #000000 for black).
- Enter the background color in hex format (e.g., #FFFFFF for white).
- Click the “Calculate” button to compute the contrast ratio. The page will scroll to the result.
- The contrast ratio and WCAG compliance (Level AA/AAA for normal/large text) will be displayed in a table, with detailed steps below.
- Use the “Copy Result” button to copy the ratio, compliance, and steps.
- Share your result on Twitter, WhatsApp, or Facebook, or copy an embed code to include the calculator or result on your website using the share buttons.
Formulas
Relative Luminance (L):
Contrast Ratio:
Where L1 is the lighter luminance, and L2 is the darker luminance.
Important Notes
- Colors must be in valid hex format (3 or 6 digits, e.g., #FFF or #FFFFFF). Invalid inputs will trigger an error.
- WCAG Level AA requires a contrast ratio of 4.5:1 for normal text and 3:1 for large text.
- WCAG Level AAA requires a contrast ratio of 7:1 for normal text and 4.5:1 for large text.
- Clipboard access requires a secure context (HTTPS). If copying fails, try accessing the calculator over HTTPS or copy manually.