Difference between revisions of "Contrast References"
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Contrast minimum; | Contrast minimum; | ||
| − | + | Understanding Web Content Accessibility Guidelines (WCAG) 2.1; | |
https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum.html; | https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum.html; | ||
Provide sufficient contrast between foreground and background; | Provide sufficient contrast between foreground and background; | ||
| − | 3WC | + | Tips for Getting Started - 3WC Web Accessibility Initiative; |
https://www.w3.org/WAI/tips/designing/#provide-sufficient-contrast-between-foreground-and-background; | https://www.w3.org/WAI/tips/designing/#provide-sufficient-contrast-between-foreground-and-background; | ||
| − | Contrast calculator | + | Contrast calculator: Calculating and testing easily accessible colour combinations; |
| − | Calculating and testing easily accessible colour combinations; | + | Leserlich - German Federation of the Blind and Partially Sighted; |
https://www.leserlich.info/werkzeuge/kontrastrechner/index-en.php; | https://www.leserlich.info/werkzeuge/kontrastrechner/index-en.php; | ||
Contrast Ratio; | Contrast Ratio; | ||
| Line 21: | Line 21: | ||
Checks and finds good contrast between two colors; | Checks and finds good contrast between two colors; | ||
https://contrast-finder.tanaguru.com/; | https://contrast-finder.tanaguru.com/; | ||
| − | No Coffee - Vision | + | No Coffee - Vision simulator for Firefox; |
| − | Simulates slight to extreme vision problems | + | Simulates slight to extreme vision problems; |
| − | https:// | + | https://addons.mozilla.org/en-US/firefox/addon/nocoffee/; |
Guide: Colours and contrast; | Guide: Colours and contrast; | ||
Accessibility Developer Guide; | Accessibility Developer Guide; | ||
https://www.accessibility-developer-guide.com/knowledge/colours-and-contrast/; | https://www.accessibility-developer-guide.com/knowledge/colours-and-contrast/; | ||
Article: Color and contrast accessibility; | Article: Color and contrast accessibility; | ||
| − | Dave Gash, Meggin Kearney, Rachel Andrew, Rob Dodson; | + | Dave Gash, Meggin Kearney, Rachel Andrew, Rob Dodson - Google Developers; |
https://web.dev/color-and-contrast-accessibility/; | https://web.dev/color-and-contrast-accessibility/; | ||
Color Contrast Accessibility Validator; | Color Contrast Accessibility Validator; | ||
| Line 34: | Line 34: | ||
https://color.a11y.com/?boia; | https://color.a11y.com/?boia; | ||
Colortester; | Colortester; | ||
| − | + | Assesses if a website meets the WCAG 2.0 color contrast success criteria; | |
https://alfasado.net/apps/colortester.html; | https://alfasado.net/apps/colortester.html; | ||
Contrast; | Contrast; | ||
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==General== | ==General== | ||
===Contrast minimum=== | ===Contrast minimum=== | ||
| − | + | Understanding Web Content Accessibility Guidelines (WCAG) 2.1 | |
https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum.html | https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum.html | ||
===Provide sufficient contrast between foreground and background=== | ===Provide sufficient contrast between foreground and background=== | ||
| − | 3WC | + | Tips for Getting Started - 3WC Web Accessibility Initiative |
https://www.w3.org/WAI/tips/designing/#provide-sufficient-contrast-between-foreground-and-background | https://www.w3.org/WAI/tips/designing/#provide-sufficient-contrast-between-foreground-and-background | ||
| − | ===Contrast calculator | + | ===Contrast calculator: Calculating and testing easily accessible colour combinations=== |
| − | Calculating and testing easily accessible colour combinations | + | Leserlich - German Federation of the Blind and Partially Sighted |
https://www.leserlich.info/werkzeuge/kontrastrechner/index-en.php | https://www.leserlich.info/werkzeuge/kontrastrechner/index-en.php | ||
| Line 92: | Line 92: | ||
https://contrast-finder.tanaguru.com/ | https://contrast-finder.tanaguru.com/ | ||
| − | ===No Coffee - Vision | + | ===No Coffee - Vision simulator for Firefox=== |
| − | Simulates slight to extreme vision problems | + | Simulates slight to extreme vision problems |
| − | https:// | + | https://addons.mozilla.org/en-US/firefox/addon/nocoffee/ |
| − | === | + | ===Colors and contrast=== |
Accessibility Developer Guide | Accessibility Developer Guide | ||
https://www.accessibility-developer-guide.com/knowledge/colours-and-contrast/ | https://www.accessibility-developer-guide.com/knowledge/colours-and-contrast/ | ||
| − | === | + | ===Color and contrast accessibility=== |
| − | Dave Gash, Meggin Kearney, Rachel Andrew, Rob Dodson | + | Dave Gash, Meggin Kearney, Rachel Andrew, Rob Dodson - Google Devolopers |
https://web.dev/color-and-contrast-accessibility/ | https://web.dev/color-and-contrast-accessibility/ | ||
| Line 113: | Line 113: | ||
===Colortester=== | ===Colortester=== | ||
| − | + | Assesses if a website meets the WCAG 2.0 color contrast success criteria | |
https://alfasado.net/apps/colortester.html | https://alfasado.net/apps/colortester.html | ||
Latest revision as of 13:55, 7 June 2021
| headline 1 | General |
|---|---|
| headline 1 coordinates | 333.000, 0.000, 0.000 |
| references 1 | Contrast minimum;
Understanding Web Content Accessibility Guidelines (WCAG) 2.1; https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum.html; Provide sufficient contrast between foreground and background; Tips for Getting Started - 3WC Web Accessibility Initiative; https://www.w3.org/WAI/tips/designing/#provide-sufficient-contrast-between-foreground-and-background; Contrast calculator: Calculating and testing easily accessible colour combinations; Leserlich - German Federation of the Blind and Partially Sighted; https://www.leserlich.info/werkzeuge/kontrastrechner/index-en.php; Contrast Ratio; Contrast ratio calculator and checker; https://contrast-ratio.com; Color Tool; Create, share, and apply color palettes and measure the accessibility level of any color combination; https://material.io/resources/color/; Tanaguru Contrast Finder; Checks and finds good contrast between two colors; https://contrast-finder.tanaguru.com/; No Coffee - Vision simulator for Firefox; Simulates slight to extreme vision problems; https://addons.mozilla.org/en-US/firefox/addon/nocoffee/; Guide: Colours and contrast; Accessibility Developer Guide; https://www.accessibility-developer-guide.com/knowledge/colours-and-contrast/; Article: Color and contrast accessibility; Dave Gash, Meggin Kearney, Rachel Andrew, Rob Dodson - Google Developers; https://web.dev/color-and-contrast-accessibility/; Color Contrast Accessibility Validator; Free color contrast analysis tools for web pages or color-pairs; https://color.a11y.com/?boia; Colortester; Assesses if a website meets the WCAG 2.0 color contrast success criteria; https://alfasado.net/apps/colortester.html; Contrast; A macOS app for quick access to WCAG color contrast ratios; https://usecontrast.com/; Color Safe; Accessible color palettes based on WCAG Guidelines of text and background contrast ratios; http://colorsafe.co/; Colour contrast - why does it matter; GOV.UK - Accessibility in government; https://accessibility.blog.gov.uk/2016/06/17/colour-contrast-why-does-it-matter/ |
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| links to | Color_References |
| belongs to | Contrast |
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General[edit]
Contrast minimum[edit]
Understanding Web Content Accessibility Guidelines (WCAG) 2.1
https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum.html
Provide sufficient contrast between foreground and background[edit]
Tips for Getting Started - 3WC Web Accessibility Initiative
https://www.w3.org/WAI/tips/designing/#provide-sufficient-contrast-between-foreground-and-background
Contrast calculator: Calculating and testing easily accessible colour combinations[edit]
Leserlich - German Federation of the Blind and Partially Sighted
https://www.leserlich.info/werkzeuge/kontrastrechner/index-en.php
Contrast Ratio[edit]
Contrast ratio calculator and checker
Color Tool[edit]
Create, share, and apply color palettes and measure the accessibility level of any color combination
https://material.io/resources/color/
Tanaguru Contrast Finder[edit]
Checks and finds good contrast between two colors
https://contrast-finder.tanaguru.com/
No Coffee - Vision simulator for Firefox[edit]
Simulates slight to extreme vision problems
https://addons.mozilla.org/en-US/firefox/addon/nocoffee/
Colors and contrast[edit]
Accessibility Developer Guide
https://www.accessibility-developer-guide.com/knowledge/colours-and-contrast/
Color and contrast accessibility[edit]
Dave Gash, Meggin Kearney, Rachel Andrew, Rob Dodson - Google Devolopers
https://web.dev/color-and-contrast-accessibility/
Color Contrast Accessibility Validator[edit]
Free color contrast analysis tools for web pages or color-pairs
Colortester[edit]
Assesses if a website meets the WCAG 2.0 color contrast success criteria
https://alfasado.net/apps/colortester.html
Contrast[edit]
A macOS app for quick access to WCAG color contrast ratios
Color Safe[edit]
Accessible color palettes based on WCAG Guidelines of text and background contrast ratios
Colour contrast - why does it matter?[edit]
GOV.UK - Accessibility in government
https://accessibility.blog.gov.uk/2016/06/17/colour-contrast-why-does-it-matter/