The WCAG contrast requirements are flawed. Here's what a new approach could mean for data visualizations.

Create new colors based on another color's channels and values.

A tool that brings attention and understanding to how color contrast can affect people with different visual impairments.

I have looked at the documentation and I have tried to change the color of a mat-icon like so: <mat-icon class="white" color="primary" svgIcon="back"></mat-icon><span class="backTex...

Color & Contrast is an interactive guide to color for designers.

Actionable tips on how to nail WCAG 2.1 color compliance.

Get random, accessible color combinations

For users with color vision deficiencies, certain color combinations can have detrimental effects on their use of the Bloomberg Terminal.

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.

Full list of the official named colors from the CSS specification.

Reasonable Colors is an open-source color system that makes it easy to build accessible, nice-looking color palettes.

How can we make sure to design with accessible colors?

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

The APCA Advanced Perceptual Contrast Algorithim SIMPLE VERSION.

Look at the image above. Don’t you feel some colors are brighter than others? For example, between the yellow and blue: which is brighter?

Accessible Palette is an app for building color systems with consistent lightness and predictable contrast ratios across color levels.

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.

There are a lot of different ways to use SVG. Depending on which way, the tactic for recoloring that SVG in different states or conditions — :hover,

Complete guide to build scalable, harmonious color system

… an easy to use, open-source, native colour picker for macOS. Pika makes it simple to quickly find colours onscreen, in the format you need, so you can get on with being a speedy, successful designer.

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.

Open source browser tools for everyday use - Triangle generator - Color shades generator - Curved page dividers - SVG compressor - SVG → JSX - Base64 encoding - Fake data generator - Symbols collection - Lorem ipsum

Generate your own Material Design Color Palette with full control over the colors! Export to AngularJS, Materialize, CSS, Polymer, and more!