Wcag Color Contrast Aa. Enter a foreground and background color in rgb hexadecimal format e g fd3 or f7da39 or choose a color using the color picker. Enter colors for both text and background by either typing them in manually pasting them.
Wcag 2 0 requires that the foreground and background colors have a 4 5 1 contrast ratio at level aa and a 7 1 contrast ratio at level aaa you can use our contrast checker tool to determine what the ratio is between any foreground and background color. What wcag levels are there. A aa and aaa and each is progressively harder.
Heading or just larger text should have a ratio of at least 3 1.
Wcag 2 0 also requires at level a that color not be used as the sole method of conveying content or. Wcag 2 0 level aa requires a contrast ratio of at least 4 5 1 for normal text and 3 1 for large text. Related wcag success criteria 1 4 3 minimum contrast aa the color contrast between background and foreground content should be at a minimum level to ensure legibility. Wcag 2 0 requires that the foreground and background colors have a 4 5 1 contrast ratio at level aa and a 7 1 contrast ratio at level aaa you can use our contrast checker tool to determine what the ratio is between any foreground and background color.
