What is WCAG?

WCAG is the reference standard for digital accessibility. It is organised as success criteria at three levels: A, AA and AAA. Level AA is what most procurement processes and most regulation point at.

In practice at an event

For an event app the criteria that matter most in practice are colour contrast, text that resizes and reflows without loss, focus that is visible when navigating by keyboard, target sizes large enough to hit, labels that a screen reader can announce, and not conveying information by colour alone.

Contrast gets disproportionate attention because it is the one criterion that automates cleanly. It is one criterion among many, and a product that passes a contrast check may still be unusable with a screen reader.

What to look for

Ask which version and which level a vendor tests against. “Accessible” with neither is not a claim you can verify or compare.

Ask what was tested — the attendee app on both platforms, the web version, the organizer console — because coverage varies and consoles are frequently untested.

Some of this is yours rather than the vendor’s. If a product lets you choose your own brand colours, you can choose colours that fail, and checking that is your job.

How event67 handles it

The theme editor checks every colour pair an organizer chooses against WCAG AA and surfaces the measured result. That check warns and confirms; it never blocks a save — the organizer owns the decision.

We do not publish an accessibility conformance report and we will not describe the contrast advisory as if it were one. A contrast check is a single automated criterion and says nothing about focus order, screen reader labelling, target size or reflow.