Color Contrast Checker

Colour Contrast Checker & Ratio Calculator

Large Text WCAG AA
Normal Text WCAG AA
Large Text WCAG AAA
Normal Text WCAG AAA
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Foreground Color
Background Color

Color Contrast Accessibility Validator

Our page offers a handy tool for calculating the contrast ratio between text and background colors. It helps identify any potential color contrast issues on web pages or chosen color combinations, following the WCAG 2.1 Guidelines. Color contrast refers to how colors appear against each other on screens, specifically in terms of their relative luminosity perceived by the human eye. The color contrast checker tool adheres to the Web Content Accessibility Guidelines (WCAG), a set of recommendations aimed at improving web accessibility. These guidelines establish two levels of contrast ratio: AA (minimum contrast) and AAA (enhanced contrast). For the level AA, normal text should have a contrast ratio of at least 4.5:1, while large text (at least 18pt) or bold text should have a ratio of 3:1. For the level AAA, normal text requires a contrast ratio of at least 7:1, and large text or bold text should have a ratio of 4.5:1. Don't let color contrast issues go unnoticed. Use our tool to ensure your web content meets accessibility standards.

What is WCAG - The World Wide Web Consortium Web Accessibility Initiative?

The Web Content Accessibility Guidelines (WCAG) are developed by the World Wide Web Consortium Web Accessibility Initiative (W3C WAI) to establish a single shared standard for enhancing web content accessibility. These guidelines aim to make web content more accessible for individuals with various disabilities, including visual, auditory, physical, speech, cognitive, language, learning, and neurological impairments. By addressing a broad range of issues, these guidelines strive to increase accessibility and usability for people with disabilities, as well as older individuals experiencing changes in abilities due to aging. Furthermore, they seek to improve usability for all web users.

What does contrast ratio mean?

Contrast ratio refers to the disparity between the highest and lowest brightness levels of a computer display. This metric is crucial for assessing the readability of your content. A higher contrast ratio signifies superior readability, while lower numbers (and red indications on our tool) indicate subpar readability. Understanding this concept is pivotal for optimizing the visual impact of your content.

What is a good contrast ratio?

A good contrast ratio is crucial for optimal readability of your content. According to the World Wide Web consortium, a ratio above 4.5:1 is recommended, with the exception of larger text, which can be acceptable at 3:1 but should ideally be higher. Ensuring a sufficient contrast ratio is essential to enhance the overall user experience.

What are some simple rules for web color contrast?

For ensuring effective web color contrast, it is important to adhere to a few simple rules. Firstly, opt for brighter colors when displaying them over darker backgrounds, and vice versa. Secondly, it is advisable to avoid using color combinations like green and red, or blue and yellow, as they may result in poor contrast. By following these guidelines, you can enhance the visual appeal and readability of your web content.

Using a Color Contrast Checker: Why It's Essential

Color contrast issues are prevalent in web accessibility, yet they are remarkably straightforward to address. The U.S. Web Design System (USWDS) highlights that approximately 4.5% of the American population experiences some form of color insensitivity. This condition impairs their ability to discern or recognize color differences, posing challenges in reading text against backgrounds with insufficient contrast. Individuals with color insensitivity or low vision benefit significantly from a minimum luminance contrast ratio between text and its backdrop, enhancing readability. This not only aids those with limited color perception but also assists the small percentage of people who are completely colorblind.

Utilize the HEX Colors web color contrast checker for rapid evaluation of color pairings, ensuring that your brand's content and design elements are universally accessible. This tool is also invaluable for verifying color contrast compliance with various regulations, such as serving as an ADA (Americans with Disabilities Act) contrast checker.

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