--- title: ColorContrast.App: a new place for our color contrast... description: Polypane's color contrast checker has moved to a dedicated domain at ColorContrast.App. The tool has been updated with several new features: dark mode support... canonical: https://daily.dev/posts/colorcontrast-app-a-new-place-for-our-color-contrast-checker-sogymcy4l twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: ColorContrast.App: a new place for our color contrast checker | daily.dev og:description: Polypane's color contrast checker has moved to a dedicated domain at ColorContrast.App. The tool has been updated with several new features: dark mode support... og:url: https://daily.dev/posts/colorcontrast-app-a-new-place-for-our-color-contrast-checker-sogymcy4l og:image: https://api.daily.dev/og/posts/SoGyMcY4l.png og:image:alt: ColorContrast.App: a new place for our color contrast checker 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. # ColorContrast.App: a new place for our color contrast checker **[Polypane](https://daily.dev/sources/polypane)** · 3 min read · 0 upvotes · 0 comments ## Summary Polypane's color contrast checker has moved to a dedicated domain at ColorContrast.App. The tool has been updated with several new features: dark mode support that follows system preferences, APCA contrast algorithm support (graded at three levels: 45, 60, and 75 for different text sizes and weights), color blindness simulators for Protanopia, Deuteranopia, Tritanopia, and Achromatopsia, and live suggestion previews when hovering over recommended colors. The tool remains available on the original Polypane site as well. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#accessibility](https://daily.dev/tags/accessibility) [View this post on daily.dev](https://daily.dev/posts/colorcontrast-app-a-new-place-for-our-color-contrast-checker-sogymcy4l) ```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":"ColorContrast.App: a new place for our color contrast checker","url":"https://daily.dev/posts/colorcontrast-app-a-new-place-for-our-color-contrast-checker-sogymcy4l","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/colorcontrast-app-a-new-place-for-our-color-contrast-checker-sogymcy4l"},"datePublished":"2026-06-28T11:35:27.195Z","dateModified":"2026-06-28T11:35:54.392Z","description":"Polypane's color contrast checker has moved to a dedicated domain at ColorContrast.App. The tool has been updated with several new features: dark mode support...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/2ff613ee6ddca786d91d95c9da4b43dd?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/2ff613ee6ddca786d91d95c9da4b43dd?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Polypane","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Polypane","logo":"https://media.daily.dev/image/upload/s--KIZm_n0x--/f_auto,q_auto/v1782646521/logos/polypane?_a=BAMAMicg0","url":"https://daily.dev/sources/polypane"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/colorcontrast-app-a-new-place-for-our-color-contrast-checker-sogymcy4l","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"accessibility","timeRequired":"PT3M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Polypane","item":"https://daily.dev/sources/polypane"},{"@type":"ListItem","position":3,"name":"ColorContrast.App: a new place for our color contrast checker"}]} ```