CSS Débutant : cours et tutoriels sur les feuilles de style CSS 1,2 et 3. CSS Tutorial. Premiers pas en Javascript. AccessiWeb - Accueil. Temesis : qualité, conformité et accessibilité web. Color wheel | Color schemes - Adobe Kuler. Rgaa.net - Ressources sur le Référentiel général d’accessibilité pour les administrations. Ergonomie web et logiciel, architecture de l'information, utilisabilité sites Internet – Ergolab. Colour Contrast Check - snook. Date created: January 11, 2005 Date last modified: March 30, 2009 The Colour Contrast Check Tool allows to specify a foreground and a background colour and determine if they provide enough of a contrast "when viewed by someone having color deficits or when viewed on a black and white screen"[W3C].
The tool will indicate that the colours pass the test if both the colour difference and the brightness difference exceed their threshold. It will indicate that it sort of passes if only one of the two values exceed their threshold. And finally, it'll fail to pass if neither value exceeds its threshold. The tool will also indicate if the colours pass the newer WCAG 2.0 contrast ratio formula. You can enter a three character value (eg: 036) and it'll automatically convert it to it's six character version.