Color Contrast Checker

Check whether your text and background colors meet WCAG accessibility guidelines. Improve readability for websites, apps, and digital designs.

Text Color (HEX)

Background Color (HEX)

Sample Heading Text

This is an example of normal paragraph text. Bold text preview

Contrast Ratio

--:1

Enter two colors to check their contrast ratio.

Normal Text – WCAG AA --

Large Text – WCAG AA --

Normal Text – WCAG AAA --

Large Text – WCAG AAA --

WCAG thresholds: AA normal 4.5:1, AA large 3:1, AAA normal 7:1, AAA large 4.5:1. Large text means at least 18pt regular or 14pt bold.

Suggested Accessible Text Colors

These suggestions use your selected background color.

About Color Contrast Checker

Color Contrast Checker is an interactive color utility designed to Check accessibility contrast. Essential for web designers, frontend developers, and digital artists looking for accessible palettes and clean CSS code.

⚡ Key Features

Accurate mathematical conversion between HEX, RGB, HSL, and CMYK
WCAG 2.1 accessibility contrast compliance ratio scoring
Interactive color wheel and harmonious palette generation
One-click copy for ready-to-paste CSS styles and hex codes

📖 How to Use

Pick a color from the visual picker or enter your custom HEX code.
Explore calculated harmonies, shades, contrast scores, or CSS snippets.
Click any color block or copy button to grab the code.

How to Use Color Contrast Checker: Complete Guide & Walkthrough

Color Contrast Checker is an interactive browser utility engineered for precision, speed, and privacy. Here is everything you need to know to get maximum results.

Color Contrast Checker provides designers, front-end engineers, and visual artists with accurate, instant color space translations and palette creation. Convert effortlessly between HEX, RGB, HSL, and modern CSS color formats to ensure cohesive aesthetics across every digital touchpoint.

Mathematical color transformations are calculated with floating-point precision directly in your browser. From computing WCAG accessibility contrast ratios to generating smooth chromatic tints and shades, our tool computes values instantly with zero latency.

Establishing an accessible, cohesive color system is essential for user-friendly web experiences. Validate color harmony, check contrast compliance against dark and light themes, and copy CSS-ready values directly into your stylesheets or design systems.

Step-by-Step Guide: How to Use Color Contrast Checker

1

Provide Your Input or Files Upload your source document, drag and drop files into the workspace, or paste your input content directly into the tool field above.
2

Customize Settings & Run Configure any relevant output format options, sliders, or conversion preferences, then click the primary action button to process instantly.
3

Preview, Copy, or Download Review your converted result on the live canvas or preview panel. Click Download or Copy to Clipboard to save your output locally with zero delays.

Pro Tips for Getting the Best Results:

WCAG Accessibility: Aim for a minimum contrast ratio of 4.5:1 for body copy and 3:1 for large UI components to meet WCAG AA standards.
HSL for Consistency: When building tint and shade scales, adjusting lightness (L) in HSL often produces more natural variations than raw RGB manipulation.
Color Harmony: Pair dominant brand tones with complementary or triadic accents to guide user attention to key calls-to-action.

Color Contrast Checker