Tagged “contrast”

There are many colour contrast checking tools but I like this one from Erik Kennedy (of Learn UI Design) a lot. It features an intuitive UI using simple, human language that mirrors the task I’m there to achieve, and it’s great that if your target colour doesn’t have sufficient contrast to meet accessibility guidelines it will intelligently suggest alternatives that do.

I’m sure everyone has their favourite tools; I just find this one really quick to use!

Colour contrast and the use of colour is extremely important for certain groups of people with varying levels of visional impairment. Building upon the excellent Colorable, I wanted more context around the result. When you share the outcome with your colleagues, all the results, rules and what you’re aiming for, is easily understandable for when you have those awkward conversations with designers and marketers. Accessibility doesn’t have to be ugly.

An excellent, easy to use tool for checking text-against-background contrast for accessibility and sharing your results with others.

(via @paddyduke)

Removing underlines from links in HTML text presents an accessibility challenge. In order for a design to be considered accessible, there is now a three-sided design contraint - or what I call "The Contrast Triangle". Your text, links and background colors must now all have sufficient contrast from each other. Links must have a contrast ratio of 3:1 from their surrounding text. By not using underlines, a design has to rely on contrast alone to achieve this.

It’s interesting that Chip says that this level of contrast is needed “when we don’t use underlines on links”.

By not using underlines, a design has to rely on contrast alone to achieve this.

So this seems to be yet another good reason to include underlines in links, i.e. if you underline your links then you don’t need to worry quite as much about a third level of contrast.

Indeed, when you toggle on the “Show underlines” option on this tool, it then removes the requirement to ensure additional contrast between hyperlinks and standard body text.

However, even if your links in flowing prose are underlined, there’s always likely to be places (Navigation, Footer, CTAs etc) where you’ve probably disabled underlines on links for design effect, so I reckon this is useful for most websites.

(via https://twitter.com/jamesmockett)

It's a tool that brings attention and understanding to how color contrast can affect different people with visual impairments.

What’s interesting about this resource is that sheds light on the many different types of visual impairment, from Protanomaly (trouble distinguishing reds) to Achromatopsia (complete colour blindness; only being able to see shades) and how your website’s colour scheme fares for each. (via paddyduke.com)