Color Contrast Calculator

Check if your color combinations meet WCAG guidelines for accessibility.

Preset

Color Selection

Foreground (Text)

#000000

Background

#FFFFFF

Color Preview

Heading Text

This is how your text will look with these colors.

The quick brown fox jumps over the lazy dog.

Contrast Analysis

21.00:1

AAA Compliant

AA Largepasses
AA Normalpasses
AAA Largepasses
AAA Normalpasses

WCAG AA Guidelines:

Normal Text: Pass (4.5:1 required)
Large Text: Pass (3:1 required)

WCAG AAA Guidelines:

Normal Text: Pass (7:1 required)
Large Text: Pass (4.5:1 required)

How to Use Color Contrast Calculator

Check if your color combinations meet WCAG guidelines for accessibility and ensure readable designs.

How It Works

Select your foreground (text) color using the color picker or hex input
Choose your background color using the second color picker
View the real-time contrast ratio calculation
Check WCAG compliance levels (AA and AAA) for both normal and large text
See a live preview of how your text will look with the selected colors

WCAG Contrast Guidelines

AA Level (minimum): Requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text
AAA Level (enhanced): Requires a contrast ratio of at least 7:1 for normal text and 4.5:1 for large text
Large Text: Defined as text that is at least 18pt (24px) or 14pt (18.7px) and bold

Why Color Contrast Matters

Accessibility: Essential for users with low vision or color vision deficiencies
Readability: Improves text readability for all users in varying lighting conditions
Legal Compliance: Required for accessibility compliance in many jurisdictions
Professional Design: Creates a more polished and professional appearance
User Experience: Reduces eye strain and improves overall usability

AccessibilityDesignWCAG