Color Contrast
$10.00
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Color Contrast
$10.00
Calculate the WCAG 2.1 contrast ratio between two colors and return pass/fail results for AA and AAA compliance at normal and large text sizes. Use ?fg=<foreground color, required>&bg=<background color, optional>. No external API key is required.
Endpoint: GET /color/contrast?fg=<required>&bg=<optional>
Color Contrast（颜色对比度检测） 计算两个颜色之间的WCAG 2.1对比度，返回AA/AAA标准在正常/大号文字下的通过结果。适合AI代理进行网页无障碍（a11y）检测。
无需任何外部API key。
端点：GET /color/contrast?fg=<前景色，必填>&bg=<背景色，可选>