Guide
Accessible color contrast for Shopify themes
Color contrast is the difference in luminance between text and its background. When it is too low, text becomes hard or impossible to read for many shoppers — especially those with low vision.
WCAG 2.2 AA sets measurable thresholds, which makes contrast one of the more objective accessibility issues to test and fix.
The ratios to aim for
Normal-size body text should have a contrast ratio of at least 4.5:1 against its background. Large text — roughly 24px, or 19px bold — can meet a 3:1 ratio. Interface components and meaningful graphics also need at least 3:1.
Sale prices, muted captions, placeholder text, and overlaid text on imagery are the usual offenders on a storefront.
Why a widget cannot truly fix it
An overlay can recolor text at runtime, but that often fights the theme's own styles and can produce inconsistent or broken results across templates.
A durable fix adjusts the color values in the theme so the contrast holds everywhere the style is used.
How Remedify corrects contrast
Remedify measures contrast against WCAG 2.2 AA, then proposes a specific color adjustment as a diff you can review before it is written into the theme.
The change lives in your code and is recorded with a date, so the improvement is both durable and documented.