The standard we build to

This site targets the Web Content Accessibility Guidelines 2.1 at level AA. We state that as a target rather than a certification, because a claim of full conformance is only meaningful with an audit behind it and we would rather tell you what was measured.

What was measured

• Color contrast, against every surface. Text and link colors were computed against each background the design actually uses, not only against white. Body text runs at 12.8:1 on white and 11.8:1 on the gray surface. The link color measures 6.6:1 on white, 6.1:1 on the gray surface and 6.0:1 on the warm tint. On dark bands, text is white at 18.9:1 and links measure 8.1:1.
• The brand orange is restricted. It measures 3.3:1 on white, which fails AA for body text, so it is used only for large display type, rules and graphic fills — never for body copy or links. On the warm tint it measures 2.9:1 and is not used for text at all.
• Heading order. Pages are checked for skipped heading levels, which is a real failure for anyone navigating by headings.
• Alternative text. Every image carries a descriptor of what it actually depicts.
• Keyboard focus. Focus indicators are visible on links and on expandable sections.
• No text transformation. Words appear as they were written; the site does not use CSS to change their case, which can cause screen readers to misread abbreviations.

Known limitations

• Some evidence pages contain wide data tables. These scroll horizontally within their own container rather than forcing the page to scroll, but a very narrow screen is still a harder reading experience than a wide one.
• Citations open in a new tab, which is signposted in the link but is still a context change.
• This site has not had an independent third-party accessibility audit.