A text color does not have enough contrast with the background image or color

How to Fix the Problem

The minimum contrast ratio between the text color and its background color should be above 4.5:1. Use any color contrast tool for adjusting the colors, until their contrast ratio is compliant.

The Algorithm, in Simple Terms

Engine scans for text and compares the foreground and background color for a contrast ratio of at least 4.5:1

Why Is it Important?

The content using the minimum contrast ratio can be read by people with moderately low vision or people who do not see the full range of colors.