# Contrast Aa — WCAG Color Accessibility Tool

> WCAG Color Accessibility Tool (iPhone/iPad app by MIZOU, CO., LTD..)

- Source: https://appshunter.io/ios/app/contrast-aa/id6761348234 (this page in markdown: same URL + `.md`)
- Developer: [MIZOU, CO., LTD.](https://appshunter.io/developer/1542553141)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 18.0 · 4 MB
- Languages: American English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, Canadian French, German (Germany) and 23 more
- Released: 2026-03-31
- Data updated: 2026-09-03
- User reviews in markdown: https://appshunter.io/ios/app/contrast-aa/id6761348234/reviews.md

## What is Contrast Aa?

Check color contrast ratios instantly. Validate your designs against WCAG 2.0 accessibility standards with real-time preview across AA and AAA levels.

Contrast Checker is the essential tool for designers and developers who care about accessibility. Whether you're building a brand new interface or auditing an existing design, this app helps you ensure every color combination meets the highest accessibility standards.

KEY FEATURES

- Real-Time Contrast Ratio Calculation
Enter any two colors and instantly see the contrast ratio. Results update in real time as you adjust your palette.

- WCAG AA & AAA Validation
Check your color pairs against both AA and AAA compliance levels for normal text, large text, and UI components.

- Smart Color Suggestions
When a color combination falls short, get intelligent suggestions for accessible alternatives that stay close to your original palette.

- Hex, RGB & HSL Support
Work with colors in whatever format suits your workflow. Switch seamlessly between Hex, RGB, and HSL inputs.

- Visual Preview
See how your text and background combinations actually look with a live preview, so you can make informed design decisions at a glance.

- Share & Export Results
Easily share contrast check results with your team or export them for documentation purposes.

BUILT FOR DESIGNERS

Contrast Checker was created with design professionals in mind. The clean, focused interface lets you work quickly without distractions. Whether you're a UI designer, front-end developer, or accessibility consultant, this tool fits naturally into your workflow.

WCAG 2.0 STANDARDS

The Web Content Accessibility Guidelines (WCAG) define minimum contrast ratios to ensure content is readable for people with visual impairments. Contrast Checker makes it effortless to verify compliance, helping you build inclusive digital experiences.


## Version history (last 5 releases)

### 1.0.4 — 2026-08-27

Fixed several bugs found while testing this release.
Permission prompts now explain themselves in your language.

### 1.0.3 — 2026-07-22

軽微な改善とバグ修正を行いました。

### 1.0.2 — 2026-07-06

This update adds support for many more languages, plus minor improvements.

### 1.0.1 — 2026-06-08

Welcome to Contrast Checker! This initial release includes:

- Real-time contrast ratio calculation
- WCAG AA and AAA compliance checking
- Smart accessible color suggestions
- Hex, RGB, and HSL color input support
- Live visual preview of color combinations
- Share and export functionality

### 1.0.0 — 2026-03-31

No release notes.

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All apps by MIZOU, CO., LTD.: https://appshunter.io/developer/1542553141

## Related topics

[lrv contrast calculator](https://appshunter.io/ios/topics/lrv-contrast-calculator)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*