The real cost of ignoring colour contrast

It comes up on almost every project, usually later than it should. Nobody bills you for neglecting colour contrast. The cost shows up somewhere else.

The measurable part of design is whether people can find what they came for and act on it without hesitating. Most teams find the first pass takes an afternoon and the maintenance takes minutes a month.

Where the cost lands

• Time spent on work that should not have been necessary
• Enquiries that quietly never arrive
• Body text needs a 4.5:1 contrast ratio against its background
• Rework, once the problem is finally visible

Light grey on white fails more often than designers expect. Small and consistent beats large and occasional here. It is worth deciding this deliberately rather than inheriting whatever the last person set up.

Making it stick

Contrast checkers take seconds and settle arguments. There is a version of this that is over-engineered, and it is worth avoiding. It is the sort of thing that looks like polish right up until it costs you an enquiry.

In practice

Design decisions are the ones clients feel most confident arguing about, which makes it worth separating taste from evidence early. Three things worth confirming about colour contrast before you move on:

• Someone can say what the current setup is without going to look
• Contrast checkers take seconds and settle arguments — and you know whether that is true here
• There is a way to tell whether the last change to this helped

None of this needs a rewrite. Most of it is a morning's work once someone decides to do it.