wcag

Difference is what makes anything perceivable, and it is measurable for text against its background.

UI foundation · Visual design

Around one in twelve men has a colour vision deficiency, so colour has to be reinforced by something else.

UI foundation · Color

The space between lines, which governs whether a paragraph is readable and is a WCAG requirement.

UI foundation · Typography

What the standard is, which version applies, and how the levels translate into design decisions.

Accessibility · Standards

Colour may reinforce meaning but must never be the only thing carrying it.

Accessibility · Perceivable

Interactive targets need to be large enough and spaced enough to hit reliably.

Accessibility · Operable

Content must work at 400 percent zoom without horizontal scrolling, which is the same as working at 320 pixels wide.

Accessibility · Perceivable

Text must scale to 200 percent without breaking, which means never sizing type in absolute units.

Accessibility · Perceivable

Users must be able to increase spacing without content being clipped or lost.

Accessibility · Perceivable

Errors must be identified in text, described specifically, and accompanied by a suggested fix where one is known.

Accessibility · Understandable

Every input needs a persistent label, and format requirements must be stated before the user types.

Accessibility · Understandable

Content that appears on hover or focus must be dismissible, hoverable and persistent.

Accessibility · Perceivable

Single-character shortcuts must be switchable off, remappable, or active only on focus.

Accessibility · Operable

A structured assessment against WCAG, combining automated tooling with the manual testing that finds most real problems.

Workflow · Practice

Using a model alongside automated tooling, which extends coverage a little and does not approach a real audit.

AI workflow · Evaluation

A practical WCAG 2.2 AA review pass, ordered so the checks that find the most problems come first.

Checklist · Accessibility