Question

Why does accessibility matter in marketing?

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Answer

Because a substantial proportion of your audience cannot use inaccessible content, the legal position is stricter than most marketers realise, and — practically — accessible content performs better for everyone.

The scale. Around one in five people has a disability of some kind, which is a larger addressable group than most segments marketers target deliberately. It includes permanent, temporary and situational limitations: a broken arm, bright sunlight on a phone screen, holding a baby, or a noisy train where video without captions is unusable.

The legal position. Equality and accessibility legislation in many jurisdictions applies to services and to information, including websites and digital content, and enforcement has increased. Public sector bodies face explicit requirements in several countries, and litigation against private organisations is common in some markets.

What actually matters, in rough order of impact:

Colour contrast, which is the most common failure by a wide margin and affects everyone in poor lighting.

Alternative text on meaningful images, and — importantly — not on decorative ones, which should be marked as such so screen readers skip them.

Captions on video, which are used overwhelmingly by people without hearing loss, since most social video is watched without sound. This is the clearest case where accessibility and performance align.

Readable structure — real headings in order, not text made large and bold, which is what allows screen reader users to navigate.

Descriptive link text, since "click here" repeated twenty times is useless out of context.

Keyboard operability, meaning everything usable without a mouse.

Not relying on colour alone to convey meaning.

Text in images, which cannot be resized, read aloud, translated or searched — a recurring problem in email marketing.

Email specifically: many messages are image-only, which fails when images are blocked, defeats screen readers and harms deliverability.

The commercial argument, plainly: captions increase watch time, clear structure improves search performance, good contrast improves conversion, and plain language improves comprehension for everyone.

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