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Contrast Checker

WCAG color contrast checker for calculate the text contrast ratio.

Foreground Color

Please enter a valid hex triplet, or use the color picker.

Background Color

Please enter a valid hex triplet, or use the color picker.

Contrast Ratio 21:1

Normal Text



Example normal text - 16px

Large Text



Example large text 18pt/24px

Graphical Objects and User Interface Components

WCAG AA:  Pass


Color Contrast Checker

is an essential tool for web designers, developers, and anyone involved in digital content creation. This helps ensure that the color combinations used on a website or digital interface meet accessibility standards and provide optimal readability for all users, including those with visual impairments.
Color contrast refers to the difference in brightness and hue between text or foreground elements and their background. Insufficient color contrast can make it difficult for people with low vision or color blindness to perceive and read content effectively. Using the Color Contrast Checker, you can evaluate the contrast ratio between two colors and determine if it meets accessibility requirements.
The color contrast checker usually works by entering color values for text or a foreground and background element. It then calculates the contrast ratio based on generally accepted accessibility standards such as the Web Content Accessibility Guidelines (WCAG). The result is a clear indication of whether the color combination meets the minimum contrast requirements or needs to be adjusted.
One of the key benefits of using the Color Contrast Checker is to ensure inclusiveness and accessibility in web design. Accessible design is not only a legal and ethical obligation, but also an improved user experience for a wider audience. By providing enough color contrast, you make your content more readable and usable for everyone, regardless of their visual abilities.
Another benefit of the Color Contrast Checker is its efficiency and accuracy. Manual color contrast estimation can be tricky and error prone, especially when dealing with multiple color combinations or complex designs. The Verifier automates the process and provides accurate contrast ratio measurements to help you make quick, informed color decisions.
In addition, the Color Contrast Checker often provides guidance and recommendations for improving contrast if it falls below recommended levels. It may suggest alternative color combinations or adjustments to improve readability and meet accessibility standards. This guide allows designers to create visually appealing and accessible websites or interfaces.
When choosing a color contrast checker, consider factors such as accuracy, ease of use, and additional features. Look for a validator that meets established accessibility standards and provides accurate contrast ratio calculations. A user-friendly interface with clear instructions and intuitive color selection tools will simplify the process and make it accessible to designers of any skill level.
In conclusion, the Color Contrast Checker is a valuable tool for accessibility and readability in web design. By evaluating and adjusting color combinations to accessibility standards, you can create inclusive and usable digital experiences. Including a robust and user-friendly color contrast checker in your design workflow demonstrates a commitment to accessibility and enhances the overall usability of your website or digital interface. Take advantage of the Color Contrast Checker and improve your design process today.
  • Calculate contrast ratio for normal text size.
  • Calculate contrast ratio for large text size.
  • Calculate contrast ratio for User Interface Components.
  • Select color from color picker
  • Set up color Lightness

How to use Contrast Checker

  • Choose Background Color
  • Choose Foreground Color
  • Adjust Lightness if needs
  • Check audit for normal and large text


How does contrast checker work?

You need to evaluate the color of the text and background. According to the WCAG 2.1 guidelines, these are: Large text - Text with a minimum size of 18px requires a contrast ratio of 3:1; Small text - Text with a size of less than 18px requires a contrast ratio of 4.5:1.

Why should my website have sufficient color contrast?

Text on a background with a low contrast ratio is often difficult to read. This does not only negatively impact those with visual impairments, it actually inconveniences all users. One example is reading text on a cell phone outside on a sunny day.

What does website accessibility mean?

An accessible website is a website designed so that people with visual or hearing impairments can use it without restrictions. For example, this ensures that all site elements have sufficient color contrast, i.e. the text color is quite different from the background color.

Do images and videos have to comply with WCAG color contrast requirements?

Certain graphics and interface components require a contrast ratio of at least 3:1. However, this doesn’t include logos, decorative images, or general media files.

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