Contrast
Also written: contrast ratio
The difference in lightness between text and its background, measured as a ratio from 1:1 to 21:1. Normal text should reach at least 4.5:1 to be easy to read.
Also written: contrast ratio
The difference in lightness between text and its background, measured as a ratio from 1:1 to 21:1. Normal text should reach at least 4.5:1 to be easy to read.