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Colour Contrast The old Accessibility Evaluation and Repair Tools (AERT) suggested algorithm for determining colour contrast now directs here. The AERT algorithm was never a recommendation, and WCAG 2.0's luminosity contrast algorithm is recommended instead. Success Criterion 1.4.3 of WCAG 2.0 requires the visual presentation of text and images of text has a contrast ratio of at least 4.5:1, except for the following: Large Text: Large-scale text and images of large-scale text have a contrast ratio of at least 3:1; Incidental: Text or images of text that are part of an inactive user interface component, that are pure decoration, that are not visible to anyone, or that are part of a picture that contains significant other visual content, have no contrast requirement. Analyse Luminosity Contrast Ratio Related:  Accessibilité

Wave Color Contrast Checker You are here: Home > Resources > Color Contrast Checker <p><strong>This tool requires Javascript.</strong></p> Normal Text WCAG AA: Pass WCAG AAA: Pass The five boxing wizards jump quickly. Large Text Explanation Enter a foreground and background color in RGB hexadecimal format (e.g., #FD3 or #F7DA39) or choose a color using the color picker. WCAG 2.0 level AA requires a contrast ratio of 4.5:1 for normal text and 3:1 for large text. RGBA Calculator CSS List Style Wizard CSS List Style Wizard Welcome to the CSS List Style Wizard! Use this wizard to experiment with list styles and generate sample CSS style source code. This wizard uses dynamic HTML to change the style of the table in-situ, without loading another page. List Style Notes You can use any list style property for either ordered or unordered lists. Use cascading to apply style properties to sub-levels of the list. For information on dynamically setting styles with Javascript and how the HTML toggle buttons work, please see HTML and CSS Table Border Style Wizard. CSS Image Bullets As you may notice in the wizard, when using images as the bullet, the bullet does not line up to the text in an attractive way. As a work-around, you can properly align bullet images via the background image CSS property. You can see the style sheet and example below. More CSS Wizards Recommended Books Dynamic HTML: The Definitive Reference (2nd Edition)

HTML Color Code Combination Chooser Buy this domain The domain may be for sale by its owner! Related Searches This webpage was generated by the domain owner using Sedo Domain Parking. Ocawa validateur Contrast Analyser & Accessibility About the Colour Contrast Analyser This native application (available for both Windows and Mac) allows you to evaluate the color visibility and contrast of foreground/background color combinations. It provides an initial pass/fail assessment against WCAG 2.0 color contrast success criteria. In addition, the Colour Contrast Analyser provides functionality to simulate certain visual conditions such as dichromatic color blindness (protanopia, deuteranopia, tritanopia) and cataracts. Note: the image simulation features are currently not available in the Mac version. Details The Color Contrast Analyser was developed to facilitate the assessment of color combinations against WCAG 2.0: The Colour Contrast Analyser uses the following formula to determine contrast: where R, G and B are defined as: and RsRGB, GsRGB, and BsRGB are defined as: RsRGB = R8bit/255GsRGB = G8bit/255BsRGB = B8bit/255 Versions Windows Mac Acknowledgements Terms of use The Colour Contrast Analyser is freeware.

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The Mystery Of CSS Sprites: Techniques, Tools And Tutorials Advertisement CSS Sprites are not new. In fact, they are a rather well-established technique and have managed to become common practice in Web development. What Are CSS Sprites? The term “sprite” (similar to “spirit,” “goblin,” or “elf”) has its origins in computer graphics, in which it described a graphic object blended with a 2-D or 3-D scene through graphics hardware. Sprites were displayed over a static or dynamic background image, and the positioning of the sprite was controlled simply by the hardware controllers. The Pokemon Sprite Sheet, consisting of over 1000 graphic objects. Time passed, and at the beginning of the 2000s, when progressive Web designers started to seek alternatives to JavaScript-based rollover menus (with onMouseOver and onMouseOut effects), sprites saw a renaissance in Web development. In 2004, Dave Shea suggested a simple CSS-based approach to CSS sprites based on the practice established by those legendary video games. Where Are CSS Sprites Used?

NewsWare Apps | Spectra | Spectra Spectra merges the news spectrum and the color spectrum into an expansive news viewing experience. With comprehensive live news coverage, striking design, complete customization, dynamic browsing, human body interaction and many other unique features, Spectra brings A Fuller Spectrum of News to life in our most immersive extension yet. Select topics fromthe news channel palette. Use your webcamfor human interaction. Apps & Games Podcasts Podcast Gallery Dispatch Feeds RSS Channel Directory Radder Latest headlines Tenn. plane crash devastates Kansas ranching family The hero pilot of the light plane that crashed in Nashville, Tenn., was a prominent Kansas rancher on his way to the nation's largest cattle industry trade show, authorities said Tuesday. 4 killed in Tenn. crash; pilot avoided building Olympic construction leaves Sochi residents in the cold 2013 a record year for exonerations of prisoners Avalanche-choked road into Alaska town to reopen Multimedia Nightly News Video Topics Autos

W3C comprendre WCAG 2.0 Résumé Ce document, « Comprendre les WCAG 2.0 » est un guide essentiel à la compréhension et l'utilisation de la version 2.0 des Règles pour l'accessibilité des contenus Web (WCAG) (en anglais) [WCAG20] et fait partie d'un ensemble de documents les accompagnant. Notez que le contenu de ce document est de nature informative (il fournit des orientations) et non de nature normative (il n'établit pas d'exigences de conformité aux WCAG 2.0). Consulter la Présentation des Règles pour l'accessibilité des contenus Web (WCAG) (en anglais) pour une introduction aux WCAG, aux documents techniques d'accompagnement et au matériel éducatif. Les WCAG 2.0 établissent un ensemble de critères de succès visant à définir la conformité aux règles des WCAG 2.0. Ce document présente des techniques précises pour satisfaire à chaque critère de succès.

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