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color-contrast()
color-contrast()
Before color-contrast(), stylesheet authors needed to know accessible colors ahead of time. Often a palette would show black or white text on a color swatch, to indicate to a user of the color system which text color would be needed to properly contrast with that swatch.
·web.dev·
color-contrast()
Dan Hollick 🇿🇦 on Twitter
Dan Hollick 🇿🇦 on Twitter
WCAG 3 will use a new color contrast method called APCA (Advanced Perceptual Contrast Algorithm).It's a big improvement over the current system but there are a lot of changes to get your head around.🧵 pic.twitter.com/yLbujn3hG4— Dan Hollick 🇿🇦 (@DanHollick) December 9, 2021
·twitter.com·
Dan Hollick 🇿🇦 on Twitter
W3C Accessibility Guidelines (WCAG) 3.0
W3C Accessibility Guidelines (WCAG) 3.0
The W3C Accessibility Guidelines (WCAG) 3.0 provide a wide range of recommendations for making web content more accessible to users with disabilities. Following these guidelines will address many of the needs of users with blindness, low vision and other vision impairments; deafness and hearing loss; limited movement and dexterity; speech disabilities; sensory disorders; cognitive and learning disabilities; and combinations of these. These guidelines address accessibility of web content on desktops, laptops, tablets, mobile devices, wearable devices, and other web of things devices. They address various types of web content including static content, interactive content, visual and auditory media, and virtual and augmented reality. The guidelines also address related web tools such as user agents (browsers and assistive technologies), content management systems, authoring tools, and testing tools.
·w3.org·
W3C Accessibility Guidelines (WCAG) 3.0
Paul Tol's Notes
Paul Tol's Notes
This site shows such schemes, developed with the help of mathematical descriptions of colour differences and the two main types of colour-blind vision. A colour scheme should reflect the type of data shown.
·personal.sron.nl·
Paul Tol's Notes
Colour Contrast Check
Colour Contrast Check
For people with impaired vision, we are required to ensure that there is a minimum amount of contrast between our foreground and background colors. formulas for determining optimum color contrast. W3C's specification on color contrast... hp color palette. style sheet text colors. style sheet text colors.
·snook.ca·
Colour Contrast Check