About
This utility app calculates the contrast ratio between two colors in real-time. Adjust RGB components using sliders to meet accessibility standards.
What's New in ColorContrastChecker
1.2.1
October 27, 2026
アプリの掲載情報を更新しました。 アプリの機能に変更はありません。
Developer apps
FAQ
What is ColorContrastChecker used for?
ColorContrastChecker is used to calculate the contrast ratio between two colors in real-time. This helps ensure that your color choices meet accessibility standards like WCAG 2.0.
How does ColorContrastChecker calculate contrast ratios?
You can manipulate the RGB components of two colors using sliders. The app then calculates and displays the contrast ratio achieved by these color combinations instantly.
Is ColorContrastChecker free to use?
Yes, ColorContrastChecker is available for free. It does not have any in-app purchases or advertisements.
What devices does ColorContrastChecker support?
ColorContrastChecker is available for iPhone and iPod devices.
What is the age rating for ColorContrastChecker?
ColorContrastChecker has an age rating of 4+.
When was ColorContrastChecker last updated?
ColorContrastChecker was last updated on May 27, 2016, with version 1.1.
Does ColorContrastChecker have ads?
No, ColorContrastChecker does not contain advertisements.
What is the user feedback on ColorContrastChecker?
ColorContrastChecker has received 1 rating with an average of 1.0 stars.
