🌓 颜色对比度检测Color Contrast Checker (WCAG)
检测文字颜色与背景色的对比度，判断是否符合 WCAG AA/AAA 无障碍标准。Check text/background color contrast against WCAG AA and AAA accessibility standards.
使用说明与常见问题How-to & FAQ
「颜色对比度检测」是什么？What is the Color Contrast Checker (WCAG) tool?
检测文字颜色与背景色的对比度，判断是否符合 WCAG AA/AAA 无障碍标准。Check text/background color contrast against WCAG AA and AAA accessibility standards.
如何使用「颜色对比度检测」？How do I use the Color Contrast Checker (WCAG) tool?
在「颜色对比度检测」中，填写「文字颜色」、「背景颜色」等参数，结果会随输入实时计算并显示在下方。In the Color Contrast Checker (WCAG): Fill in "Text color", "Background"; results are recalculated instantly as you type.
结果可以直接用在 CSS 里吗？Can I paste the results into CSS?
可以。「颜色对比度检测」输出的是标准 CSS 颜色写法，可直接复制使用；可接受的输入格式以输入框旁的说明为准。Yes. The Color Contrast Checker (WCAG) outputs standard CSS color notation you can copy straight into a stylesheet; accepted input formats are listed next to the input.
「颜色对比度检测」免费吗？需要注册吗？Is the Color Contrast Checker (WCAG) free? Do I need an account?
「颜色对比度检测」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Color Contrast Checker (WCAG) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.