2026-07-18

How Can I Check Whether Two Colors Have Enough Contrast?.

Use contrast as a practical readability check, especially for text, buttons and small interface details.

Two colors may look attractive together and still be hard to read. Contrast is the difference in perceived brightness between a foreground color — usually text or an icon — and its background.

Low contrast is most problematic with small text, thin fonts and bright screens outdoors. It can also make buttons and form controls difficult to recognize, even when the colors fit the brand perfectly.

Check the pair, not the palette alone

A palette can contain excellent individual colors but fail when particular pairs are used together. Always test the actual combination: dark text on a light card, white text on a coloured button, or an icon against its background.

The Palette Extractor can pull colors from an image and identify a contrast pair. This gives a practical starting point when a photo, logo or brand image is setting the visual direction.

Make small changes first

If a pair feels weak, try one of these small adjustments before abandoning the color entirely:

Don’t rely on color alone to communicate a status such as error, success or selected state. Adding labels, icons and clear wording makes the interface much easier to understand for everyone.

<div class=“author-bio”> <strong>About the author:</strong> Richard Shaw, 30+ yrs software eng. 20 yrs automotive software, globally used retention solutions. Prolific SaaS dev, runs Rezero Software with his family. Contact: rich@rezero.net | rezero.net | @RichShawX </div>