For large text, a 3:1 contrast ratio is required. Large text is defined as unbolded text that is 18 point (24 px) or larger or bolded text that is 14 point (18.5 px) or larger. Any meaningful graphic ...

Contrast ratio is an important criterion in screen quality. The ratio is derived by the brightest luminance divided by the darkest luminance in candelas per square meter (cd/m 2). For example ...

If your content contains any meaningful graphic elements like a warning icon or a checkmark, they also need to meet that 3:1 contrast ratio so they are perceivable by most readers. Download a color ...