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1. Sim daltonism. update#
2. Sim daltonism. software#
3. Sim daltonism. code#
4. Sim daltonism. series#
5. Sim daltonism. simulator#

We now check whether the user has specified a preference for higher contrast and, if so, default to this theme. While the Default theme will be the theme that shows up for most visitors the first time they arrive at the site, for a few it will be this theme. We hope this theme makes using diffify a nice experience for those with impaired contrast sensitivity. This includes changing the font and background colours of the buttons and entries in the various sections and also the color of tab links and the body text itself. Boosted contrastĪs the name suggests, the Boosted contrast theme increases the contrast between the text and the background that it sits on (when compared to the Default theme) to meet the WCAG 2.1 Level AA standard.

While this theme should work for most users, a few of the text elements have lower contrast than required to meet the WCAG AA standard (see below) and as we showed in Part 1, some people with colour vision deficiencies might struggle to discern the different types of entries by colour alone. DefaultĪs the name suggests, this is the theme you will probably see when you first come to the site in a particular browser. Whatever your problem, Jumping Rivers can help.Īt the time of writing we have three themes for the user to choose from. It can often be difficult to know where to start. There is no real requirement on a maintainer to be a JavaScript expert.ĭata comes in all shapes and sizes. Through this approach, maintaining a theme means updating CSS rules, while adding a theme means adding CSS rules and an extra option in the dropdown menu.

Sim daltonism. code#

(We actually use Sass, that helps keep the code DRY, but the resulting output is still CSS.)

Sim daltonism. update#

dark mode, perhaps?).įor a site of the modest size of diffify this meant the addition of a dropdown menu from which the user can select a theme (see below), a few lines of JavaScript to update the theme when the user changes their selection from the menu and some CSS rules for each theme. Theming also makes things extensible - we can add more themes with time (e.g. We felt this offered a best-of-both-worlds approach - the site can remain aesthetically pleasing for our regular users (we hope) while offering a more accessible experience to those with visual impairments.

Sim daltonism. software#

Themes are used to customize the look and feel of a piece of computer software or of an operating system. A theme usually comprises a set of shapes and colors for the graphical control elements, the window decoration and the window. In computing, a theme is a preset package containing graphical appearance and functionality details. We also care about aesthetics.īecause of this conflict and more besides, we decided the best approach to making the site more accessible was through “theming”. Moreover, these colours also have common cultural semantics (though these do, of course, vary by culture). For instance, while reds and greens can be difficult to discern for some dichromats and anomalous trichromats, most trichromats have no such problem (peak daylight sensitivity lies in the yellow part of the spectrum, between red and green). It’s difficult to design a website that is “just right” for everyone. Here, in Part 2, I’ll cover the changes we made to and take a quick look at some tools we used to help us.

Sim daltonism. series#

In Part 1 of this two-post blog series I covered contrast sensitivity and colour vision deficiencies and related terminology.

Sim daltonism. simulator#

Sim Daltonism – Color-blindness and Color-Deficiency Simulator.Contrast Mac App – For determining Color Contrast Ratios.Mac Voiceover / JAWS – Screen Reader Software.Powermapper – An Online Accessibility Scanner.The Accessibility tools used to test and ensure the Accessibility include, but are not limited to: The specific Compliance Levels and Guidelines considered include: Periodically, Haynie CPA’s revisits issues of accessibility in an effort to continually refine and deepen the inclusive nature of their site. Various tools and accessibility measurements exist to gauge a website’s level of compliance, each reporting different accessibility issues and compliance requirements. The site was made with consideration of WCAG 2.1 A, AA, AAA guidelines and Section 508 Amendment to the Rehabilitation Act of 1973. Best efforts have been made to make accessible and inclusive to as many populations as possible.