--- title: Color contrast checker that makes suggestions for better... description: A new online color contrast checker tool was built with three core goals: speed, correctness, and actionability. Unlike existing tools, it updates on the fly... canonical: https://daily.dev/posts/color-contrast-checker-that-makes-suggestions-for-better-colors-ohdg4xlje twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Color contrast checker that makes suggestions for better colors | daily.dev og:description: A new online color contrast checker tool was built with three core goals: speed, correctness, and actionability. Unlike existing tools, it updates on the fly... og:url: https://daily.dev/posts/color-contrast-checker-that-makes-suggestions-for-better-colors-ohdg4xlje og:image: https://api.daily.dev/og/posts/oHDG4xlje.png og:image:alt: Color contrast checker that makes suggestions for better colors og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Color contrast checker that makes suggestions for better colors **[Polypane](https://daily.dev/sources/polypane)** · 2 min read · 0 upvotes · 0 comments ## Summary A new online color contrast checker tool was built with three core goals: speed, correctness, and actionability. Unlike existing tools, it updates on the fly as you type or use the color picker, correctly handles alpha transparency by mixing foreground and background colors before calculating contrast, and suggests the closest accessible color by luminance. It supports both WCAG AA and AAA levels and saves color choices in the URL for easy sharing. The same feature is also being added to the Polypane browser dev tool. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Automated Accessible Text with contrast-color\(\)](https://daily.dev/posts/automated-accessible-text-with-contrast-color--h4umpqxow) · Una Kravets · 1 upvotes · 0 comments --- Tags: [#accessibility](https://daily.dev/tags/accessibility), [#css](https://daily.dev/tags/css), [#polypane](https://daily.dev/tags/polypane) [View this post on daily.dev](https://daily.dev/posts/color-contrast-checker-that-makes-suggestions-for-better-colors-ohdg4xlje) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Color contrast checker that makes suggestions for better colors","url":"https://daily.dev/posts/color-contrast-checker-that-makes-suggestions-for-better-colors-ohdg4xlje","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/color-contrast-checker-that-makes-suggestions-for-better-colors-ohdg4xlje"},"datePublished":"2026-06-28T11:35:30.338Z","dateModified":"2026-07-02T02:12:47.479Z","description":"A new online color contrast checker tool was built with three core goals: speed, correctness, and actionability. 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