512

WCAG Contrast Checker

Live99ersstudio7 apps · 105 installsToolsFree · contains adsIn-app purchases: $2.89 per itemcom.ninetyniners.contrast_checker

Check WCAG 2.1 AA/AAA color contrast. Free, offline, no account needed.

Alert me★ WatchOpen in Play ↗
Total installs
16
exact · Play shows 10+
Installs / day
+2
7-day avg · last day +2
Rating
—★
— ratings · — reviews
Released
4 Sept 2026
1mo ago
Last update
14 Oct 2026
v1.1.1 · 5h ago
Countries
—
not checked yet

Installs per day

gain of the exact counter
01234512 Oct13 Oct14 Oct

Daily tracking since 11 Oct 2026 · history grows every day

Install history

exact counter from Google Play
101214161811 Oct13 Oct14 Oct
051015204 Sept11 Oct14 Oct

Dashed: estimate from the release date (no daily data before 11 Oct 2026) · time axis compressed before that day

Daily tracking since 11 Oct 2026 · history grows every day

Change timeline

4 changesFull history
  1. before
    Update date
    11 Oct 202614 Oct 2026
  2. before
    Version
    1.0.3 → 1.1.1
  3. before
    What's new
    The "Remove Ads" button now shows its price right away. Plus small fixes and improvements.New: a color picker. Mix a color with hue, saturation and lightness sliders, copy it as HEX, RGB or HSL, save up to 20 colors, and use any color as foreground or background in one tap. Also: your colors now stay when you…
  4. before
    Description
    WCAG Contrast Checker is the fast, pocket-sized tool for designers, developers, and accessibility auditors who need to verify color contrast against WCAG 2.1 AA and AAA standards — right on their phone. Pick any two col…WCAG Contrast Checker is the fast, pocket-sized tool for designers, developers, and accessibility auditors who need to verify color contrast against WCAG 2.1 AA and AAA standards — right on their phone. Pick any two col…

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Manifest analysis reads only the required APK ranges. Base APK downloads may need separate device splits to install.

Data safety

declared by the developer on Google Play
  • Shares data with third parties Location, App activity and 2 others
  • Collects data Location, App activity and 2 others
  • Data is encrypted in transit
  • No way to ask for data deletion

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

5 in 1 group
0 Sensitive1 Notable4 Routine
OtherNotable5

Access to miscellaneous device features that don't fit other categories

  • Keep your phone's processor or screen from going to sleep, which can use more batteryprevent device from sleeping · WAKE_LOCK
  • Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
  • Connect to the internet to load content and send datafull network access · INTERNET
  • Make your phone vibratecontrol vibration · VIBRATE
  • Check with Google Play that you got this app legitimatelyGoogle Play license check · com.android.vending.CHECK_LICENSE

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Screenshot 1 Download
Screenshot 2 Download
Full description
WCAG Contrast Checker is the fast, pocket-sized tool for designers, developers, and accessibility auditors who need to verify color contrast against WCAG 2.1 AA and AAA standards — right on their phone. Pick any two colors, see the contrast ratio instantly, and know whether your palette passes or fails for normal text, large text, and every WCAG level — all offline. FEATURES • Live contrast ratio display (e.g. 4.50:1) updated in real time • WCAG 2.1 pass/fail badges: AA normal, AA large, AAA normal, AAA large • Foreground and background color pickers with HSV color wheel • Swap foreground and background colors in one tap • Live sample panel — preview your actual text colors as you pick • Color-blind simulation: Protanopia, Deuteranopia, Tritanopia • Palette tab: paste up to 6 hex codes, generate a pairwise contrast matrix • Color picker tab: mix any color with hue, saturation and lightness sliders, or type its hex code • Copy a color as HEX, RGB or HSL in one tap • Save up to 20 colors and use any of them as foreground or background in one tap • Light, dark, and system theme • Works fully offline — no account, no internet HONEST SCOPE This app checks contrast ratios and simulates color-blindness for up to 6 colors at a time. It does not offer a camera eye-dropper, CSV/JSON export, or full-site accessibility auditing. It covers WCAG 2.1 contrast criteria — not every accessibility requirement. Free with ads. One-time purchase removes all ads forever. Download and ship accessible colors with confidence.

What's new

New: a color picker. Mix a color with hue, saturation and lightness sliders, copy it as HEX, RGB or HSL, save up to 20 colors, and use any color as foreground or background in one tap. Also: your colors now stay when you switch tabs, a typed hex code counts right away, and the pass/fail badges are easier to read. New languages: Nederlands, Polski, Українська, ไทย, 繁體中文.

Similar apps

closest title first, then most installs per day
More similar apps (opens in a new tab)