1 min.
Analyze your color contrasts
1L’art de la gestion de projet2Un projet à succès commence par une bonne gouvernance3Cascade, agilité, demandes de changement?

Analyze your color contrasts

Client experience & UX

What could be more frustrating than a design discussion going around in circles? How to make an evaluation of a new design more unbiased so as to avoid “I like this, but not that”? The contrast ratio is a criterion that is often overlooked when evaluating a design. And it also allows you to close a debate with a less subjective argument.

The contrast ratio is also an element that influences the ease of navigation of your site (does the fashion for gray text on websites ring a bell?). We sometimes forget the number of people who have at least one vision problem. Can you guess the percentage? 10%, 15%, 20%, 30%….or more?

51% of the Canadian population (12 years and over) have a vision deficiency (2003 CCHS). WOW!

It is possible to easily calculate the contrast ratios for your site. But unfortunately few site managers bother to do so. I suggest you use the ‘colour contrast analyzer’ tool to automatically calculate color contrasts. It offers a very user-friendly color selection tool right on the screen, no need to guess the code of the colors you want to analyze.

The software allows you to:

  • Calculation of color contrast
  • Calculation of color brightness ratio
  • Simulate the effect of certain vision disorders



(Example of simulation on the site cyberpresse.ca)


(here is an example of how gray text on a white background does not meet accessibility standards)