Drilldown: referencecollection

General (3)

0.000 (3) · 117.000 (1) · 306.000 (1) · 316.000 (1) · 333.000 (1) · 76.500 (1)

Understanding Web Content Accessibility Guidelines (WCAG) 2.1 (2)

Other values: ; 3WC - Cognitive Accessibility Roadmap and Gap Analysis A macOS app for quick access to WCAG color contrast ratios Accessibility Developer Guide Accessible Authentication Accessible color palettes based on WCAG Guidelines of text and background contrast ratios Article: Color and contrast accessibility Assesses if a website meets the WCAG 2.0 color contrast success criteria Checks and finds good contrast between two colors Color Contrast Accessibility Validator Color Safe Color Tool Colortester Colour contrast - why does it matter Contrast Contrast calculator: Calculating and testing easily accessible colour combinations Contrast minimum Contrast Ratio Contrast ratio calculator and checker Create, share, and apply color palettes and measure the accessibility level of any color combination Dave Gash, Meggin Kearney, Rachel Andrew, Rob Dodson - Google Developers Entering Data, Error Prevention and Recovery Error Identification Error Suggestion Free color contrast analysis tools for web pages or color-pairs GOV.UK - Accessibility in government Guide: Colours and contrast HTML Geolocation API http://colorsafe.co/ https://accessibility.blog.gov.uk/2016/06/17/colour-contrast-why-does-it-matter/ https://addons.mozilla.org/en-US/firefox/addon/nocoffee/ https://alfasado.net/apps/colortester.html https://color.a11y.com/?boia https://contrast-finder.tanaguru.com/ https://contrast-ratio.com https://material.io/resources/color/ https://usecontrast.com/ https://web.dev/color-and-contrast-accessibility/ https://www.accessibility-developer-guide.com/knowledge/colours-and-contrast/ https://www.breadcrumbdigital.com.au/multi-step-form-design-part-3-validation-error-messages-and-contextual-help/ https://www.leserlich.info/werkzeuge/kontrastrechner/index-en.php https://www.w3.org/TR/coga-gap-analysis/#table3 https://www.w3.org/WAI/tips/designing/#provide-sufficient-contrast-between-foreground-and-background https://www.w3.org/WAI/tips/writing/#provide-clear-instructions https://www.w3.org/WAI/WCAG21/Understanding/accessible-authentication https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum.html https://www.w3.org/WAI/WCAG21/Understanding/error-identification.html https://www.w3.org/WAI/WCAG21/Understanding/error-suggestion.html https://www.w3.org/WAI/WCAG21/Understanding/identify-input-purpose.html https://www.w3schools.com/html/html5_geolocation.asp https://www.w3schools.com/jsref/prop_nav_language.asp Identify Input Purpose Kristen Willis - Breadcrumb Digital Leserlich - German Federation of the Blind and Partially Sighted Multi-step form design: Validation, error messages and contextual help Navigator language Property No Coffee - Vision simulator for Firefox Provide Clear Instructions Provide sufficient contrast between foreground and background Simulates slight to extreme vision problems Tanaguru Contrast Finder Tips for Getting Started - 3WC - Web Accessibility Initiative Tips for Getting Started - 3WC Web Accessibility Initiative W3Schools - Get the language of the browser W3Schools - Locate a user's position

None (2) · Error Prevention (1)

0.000 · 16.000 · 328.000 · 2.000 · None · 54.000 · 75.000 · 306.000 · 314.238 · 318.000 · 320.000 · 322.000 · 324.000 · 336.000 · 53.000 · 7.000 · 304.000 · 356.000 · 42.000 · 6.000

Other values: ; 13.000 17.000 20.000 28.000 30.000 43.000 76.500 100.000 105.000 140.000 145.000 151.000 177.000 184.000 205.000 229.000 236.387 256.000 257.000 276.000 285.000 351.000

None (2) · Error Prevention (All) (1) · Error Prevention (Legal, Financial, Data) (1) · Help (1) · https://www.w3.org/WAI/WCAG21/Techniques/aria/ARIA2.html (1) · https://www.w3.org/WAI/WCAG21/Techniques/aria/ARIA21.html (1) · https://www.w3.org/WAI/WCAG21/Techniques/general/G83.html (1) · https://www.w3.org/WAI/WCAG21/Techniques/general/G98.html (1) · https://www.w3.org/WAI/WCAG21/Understanding/error-prevention-all.html (1) · https://www.w3.org/WAI/WCAG21/Understanding/error-prevention-legal-financial-data.html (1) · https://www.w3.org/WAI/WCAG21/Understanding/help.html (1) · https://www.w3.org/WAI/WCAG21/Understanding/labels-or-instructions (1) · https://www.w3.org/WAI/WCAG21/Understanding/pointer-cancellation.html (1) · Identifying a required field with the aria-required property (1) · Labels or Instructions (1) · Pointer Cancellation (1) · Providing text descriptions to identify required fields that were not completed (1) · Providing the ability for the user to review and correct answers before submitting (1) · Techniques for the Web Content Accessibility Guidelines (WCAG) 2.1 (1) · Understanding Web Content Accessibility Guidelines (WCAG) 2.1 (1) · Using Aria-Invalid to Indicate An Error Field (1)

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None (2) · Color_References (1)

Contrast (1) · Identification (1) · Input assistance (1)

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