Preview real text on any background color. WCAG score, automatic text color suggestion, simulation of different typographic styles.
WCAG defines minimum contrast ratios to ensure text readability. Level AA requires 4.5:1 for normal text and 3:1 for large text. The stricter AAA level requires 7:1 and 4.5:1. These standards help millions of people with visual impairments.
On a dark background, prefer white or a very light tone. On a light background, black or a very dark tone. Avoid middle grey — it's rarely accessible. Complementary high-contrast colors work well visually but can tire during extended reading.