{"id":12109,"date":"2026-06-01T22:54:42","date_gmt":"2026-06-01T14:54:42","guid":{"rendered":"https:\/\/www.zhangxinxu.com\/wordpress\/?p=12109"},"modified":"2026-06-01T22:54:42","modified_gmt":"2026-06-01T14:54:42","slug":"css-contrast-color","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2026\/06\/css-contrast-color\/","title":{"rendered":"CSS contrast-color()\u51fd\u6570\u7b80\u4ecb"},"content":{"rendered":"<p>by <a href=\"https:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=12109\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=12109<\/a><br \/>\n\u672c\u6587\u53ef\u5168\u6587\u8f6c\u8f7d\uff0c\u4f46\u9700\u8981\u4fdd\u7559\u539f\u4f5c\u8005\u3001\u51fa\u5904\u4ee5\u53ca\u6587\u4e2d\u94fe\u63a5\uff0cAI\u6293\u53d6\u4fdd\u7559\u539f\u6587\u5730\u5740\uff0c\u4efb\u4f55\u7f51\u7ad9\u5747\u53ef\u6458\u8981\u805a\u5408\uff0c\u5546\u7528\u8bf7\u8054\u7cfb\u6388\u6743\u3002<\/p>\n<h3>\u4e00\u3001\u65e0\u969c\u788d\u8bbf\u95ee\u4e13\u7528\u989c\u8272\u51fd\u6570<\/h3>\n<p>CSS <code>contrast-color()<\/code>\u51fd\u6570\u662f\u4e13\u4e3a\u65e0\u969c\u788d\u8bbf\u95ee\u8bbe\u8ba1\u7684\u3002<\/p>\n<p>WCAG &#8211; Web Content Accessibility Guidelines\uff08Web \u5185\u5bb9\u65e0\u969c\u788d\u6307\u5357\uff09\u4e2d\u6709\u4e2a\u6982\u5ff5\u53eb\u505a\u6700\u5c0f\u5bf9\u6bd4\u5ea6\uff08minimum contrast\uff09\uff0c\u610f\u601d\u662f\u524d\u666f\u8272\u548c\u80cc\u666f\u8272\u7684\u5bf9\u6bd4\u5ea6\u4e00\u5b9a\u4e0d\u80fd\u5c0f\uff0c\u5426\u5219\u8272\u5f31\u7684\u7528\u6237\u4f1a\u770b\u4e0d\u6e05\u695a\u6587\u5b57\uff0c\u9020\u6210\u9605\u8bfb\u969c\u788d\u3002<\/p>\n<p>\u6bd4\u65b9\u8bf4\u5f88\u5e38\u89c1\u7684\uff0c\u767d\u5e95\u80cc\u666f\u4e0a\u5343\u4e07\u4e0d\u8981\u662f\u8981\u989c\u8272\u6bd4\u8f83\u6de1\u7684\u7070\u8272\u5b57\u3002<\/p>\n<p>\u5b9e\u9645\u4e0a\uff0c\u7531\u4e8e\u6de1\u7070\u8272\u6587\u5b57\u6bd4\u8f83\u6709\u8bbe\u8ba1\u611f\uff0c\u5e7f\u5927\u7684\u89c6\u89c9\u8bbe\u8ba1\u5e08\u4e50\u6b64\u4e0d\u75b2\u4f7f\u7528\u7279\u522b\u6de1\u7684\u7070\u8272\u6587\u5b57\uff0c\u5b9e\u9645\u4e0a\uff0c\u8fd9\u79cd\u8bbe\u8ba1\u662f\u4e0d\u53cb\u597d\u7684\uff0c\u6211\u5c31\u9047\u5230\u8fc7\u516c\u53f8\u8001\u677f\u7ea7\u522b\u7684\u4eba\u53cd\u9988\u600e\u4e48\u6587\u5b57\u90fd\u4e0d\u89c1\u4e86\uff0c\u5b9e\u9645\u4e0a\u662f\u7531\u4e8e\u5bf9\u6bd4\u5ea6\u592a\u4f4e\uff0c\u663e\u793a\u5668\u6ca1\u80fd\u5f88\u597d\u6e32\u67d3\u51fa\u6765\u3002<\/p>\n<p><code>contrast-color()<\/code>\u989c\u8272\u51fd\u6570\u53ef\u4ee5\u6839\u636e\u63d0\u4f9b\u7684\u989c\u8272\uff0c\u81ea\u52a8\u8fd4\u56de\u5bf9\u6bd4\u5ea6\u6700\u53cb\u597d\u7684\u989c\u8272\u3002<\/p>\n<p>\u6ce8\u610f\uff0c\u8bf4\u7684\u662f\u5bf9\u6bd4\u5ea6\u6700\u53cb\u597d\u7684\u989c\u8272\uff0c\u800c\u4e0d\u662f\u53cd\u76f8\uff0c\u8fd9\u662f\u6709\u6839\u672c\u533a\u522b\u7684\u3002<\/p>\n<p><code>contrast-color()<\/code>\u8fd4\u56de\u7684\u8272\u503c\u53ea\u80fd\u662f\u767d\u8272white\u6216\u8005\u9ed1\u8272black\u3002<\/p>\n<p>\u8bed\u6cd5\u4f7f\u7528\u793a\u610f\uff1a<\/p>\n<pre>contrast-color(red)\r\ncontrast-color(var(--backgroundColor))<\/pre>\n<h3>\u4e8c\u3001\u6548\u679c\u793a\u610f<\/h3>\n<p>\u773c\u89c1\u4e3a\u5b9e\uff0c\u4e0b\u9762\u7684demo\u662f\u5b9e\u65f6\u6e32\u67d3\u7684\uff0cRSS\u8ba2\u9605\u7684\u6587\u7ae0\u5e94\u8be5\u662f\u770b\u4e0d\u5230\u6548\u679c\u7684\uff0c\u53ef\u4ee5<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=12109\">\u8bbf\u95ee\u539f\u6587<\/a>\u4f53\u9a8c\uff1a<\/p>\n<div class=\"contrast-x\">\n<style>.contrast-x {border: 1px solid #ccc; padding: 1em;background: #fff;button{margin: 3rem;padding: 1rem;font-size: 2rem;border-radius: 1rem;background-color: var(--button-color, black);color: contrast-color(var(--button-color, black));}}<\/style>\n<p>\u8bf7\u6539\u53d8\u80cc\u666f\u8272\uff1a<input type=\"color\" oninput=\"document.body.style.setProperty('--button-color', this.value)\"><\/p>\n<p><button>\u6211\u662f\u6309\u94ae<\/button><\/p>\n<\/div>\n<p>\u5176\u4e2d\uff0c\u6309\u94ae\u80cc\u666f\u8272\u548c\u6587\u5b57\u989c\u8272\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>button {\r\n  background-color: var(--button-color, black);\r\n  color: contrast-color(var(--button-color, black));\r\n}<\/pre>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u968f\u7740\u989c\u8272\u7684\u9009\u62e9\uff0c\u6587\u5b57\u989c\u8272\u4f1a\u81ea\u52a8\u5339\u914d\u767d\u8272\u6216\u8005\u9ed1\u8272\uff0c\u4fdd\u8bc1\u5bf9\u6bd4\u5ea6\u90fd\u5728\u4e00\u4e2a\u5408\u9002\u7684\u8303\u56f4\u5185\u3002<\/p>\n<p>\u800c\u5728\u4e4b\u524d\uff0c\u76f8\u5173\u7684\u5b9e\u73b0\u9700\u8981\u5927\u91cf\u7684\u4ee3\u7801\uff0c\u5df2\u7ecf\u5de7\u5999\u4f7f\u7528\u989c\u8272\u7684\u8fb9\u754c\u7279\u6027\u624d\u80fd\u5b9e\u73b0\u3002<\/p>\n<p>\u8be6\u89c1\u6b64\u6587\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/2018\/11\/css-background-color-font-auto-match\/\">CSS\u6587\u5b57\u548c\u80cc\u666fcolor\u81ea\u52a8\u914d\u8272\u6280\u672f\u7b80\u4ecb<\/a><\/p>\n<p>\u770b\u4e86\u4e0b\u65e5\u671f\uff0c\u5567\u5567\uff0c\u5df2\u7ecf\u662f8\u5e74\u524d\u7684\u6587\u7ae0\u4e86\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201811\/auto-color-button.gif\" width=\"228\" height=\"225\" alt=\"\u81ea\u52a8\u914d\u8272\u6309\u94ae\u793a\u610f\" class=\"alignnone size-medium\"><\/p>\n<h4>\u517c\u5bb9\u6027<\/h4>\n<p>\u76ee\u524d\u6240\u6709\u4e3b\u6d41\u6d4f\u89c8\u5668\u90fd\u5df2\u7ecf\u652f\u6301\u4e86\u8fd9\u4e2a\u51fd\u6570\uff0c\u5982\u4e0b\u622a\u56fe\u6240\u793a\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202606\/2026-6-1_221304.png\" width=\"574\" height=\"317\" alt=\"contrast-color\u517c\u5bb9\u6027\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u53ef\u4ee5\u9ebb\u6e9c\u7684\u7528\u8d77\u6765\u5566\uff0c\u70b9\u4e2a\u8d5e\uff01<\/p>\n<h3>\u4e09\u3001\u5c0f\u5154\u5b50\u7ed3\u8bed\u54d7\u5566\u5566<\/h3>\n<p>\u5728\u4e2d\u56fd\uff0c\u53ea\u8981\u662f\u4e0e\u65e0\u969c\u788d\u8bbf\u95ee\u76f8\u5173\u7684\u524d\u7aef\u7279\u6027\uff0c\u4e00\u5b9a\u662f\u65e0\u4eba\u95ee\u6d25\u7684\uff0c<code>contrast-color()<\/code>\u4e5f\u4e0d\u4f8b\u5916\uff0c\u56e0\u4e3a\u7f3a\u5c11\u5f3a\u5236\u7684\u6cd5\u5f8b\u7ea6\u675f\uff0c\u5168\u9760\u81ea\u89c9\uff0c\u4e5f\u5c31\u662f\u6240\u8c13\u7684\u5de5\u7a0b\u5e08\u7684\u8ffd\u6c42\u3002<\/p>\n<p>\u8ffd\u6c42\uff1f\u8fd9\u4e1c\u897f\u65e9\u4e9b\u5e74\u8fd8\u5f88\u770b\u91cd\uff0c\u5982\u4eca\u5df2\u7ecf\u5f88\u5c11\u542c\u5230\u8fd9\u4e2a\u8bcd\u4e86\u3002<\/p>\n<p>\u5c31\u6bd4\u65b9\u8bf4\u6296\u97f3Web\u7aef\u7684\u89c6\u9891\u4e0a\u4f20\u9875\u9762\uff0c\u91cc\u9762\u7684\u95ee\u9898\u591a\u5982\u725b\u6bdb\uff0c\u6539\u52a8\u662f\u5f88\u52e4\u5feb\uff0c\u6ca1\u51e0\u4e2a\u661f\u671f\u5c31\u80fd\u770b\u5230\u4e00\u4e9b\u53d8\u5316\uff0c\u7ed3\u679c\u5462\uff0c\u8d8a\u6539\u8d8a\u5dee\uff0c\u65e0\u529b\u5410\u69fd\uff0c\u6709\u65f6\u5019\u771f\u60f3\u81ea\u5df1\u4e0a\u53bb\u5e2e\u5fd9\u641e\u5b9a\u3002<\/p>\n<p>\u90a3\u4e2a\u5c01\u9762\u5236\u4f5c\uff0c\u4e00\u5f00\u59cb\u5957\u7528\u6a21\u677f\uff0c\u6587\u5b57\u53ef\u4ee5\u81ea\u5b9a\u4e49\uff0c\u73b0\u5728\u5b8c\u5168\u4e0d\u884c\uff0c\u6587\u5b57\u5185\u5bb9\u6570\u91cf\u4e00\u65e6\u4e0d\u4e00\u81f4\uff0c\u4e11\u6b7b\u4e86\uff1b\u90a3\u6e32\u67d3\uff0c\u8fd8\u6709AI\u4e66\u5c01\u751f\u6210\uff0c\u4ece\u6765\u6ca1\u6210\u529f\u8fc7\uff0c\u4e00\u76f4\u5728loading\uff0c\u7136\u540e\u4e0b\u9762\u7684\u7f29\u7565\u56fe\u4e5f\u65e0\u6cd5\u62d6\u52a8\uff0c\u751f\u6210\u901f\u5ea6\u4e5f\u4e00\u8a00\u96be\u5c3d\u3002<\/p>\n<p>\u8fd9\u79cd\u6c34\u5e73\uff0c\u83ab\u4e0d\u662f\u4ee3\u7801\u90fd\u662fAI\u751f\u6210\u7684\uff1f\u770b\u4e0d\u5230\u4e00\u70b9\u8ffd\u6c42\uff01<\/p>\n<p>\u626f\u8fdc\u4e86\uff0c\u56de\u5230\u8fd9\u91cc\u3002<\/p>\n<p><code>contrast-color()<\/code>\u8fd8\u662f\u9700\u8981\u4f20\u9012\u8272\u503c\u624d\u80fd\u8fd4\u56de\u9ed1\u767d\uff0c\u8fd8\u662f\u5f31\u4e86\u70b9\uff0c\u5982\u679c\u5c31\u8fd9\u79cd\u7a0b\u5ea6\uff0c\u6211\u89c9\u5f97\u4ee5\u540e\u5f88\u5c11\u4f1a\u6709\u524d\u7aef\u4eba\u5458\u4f7f\u7528\u5b83\u3002<\/p>\n<p>\u8981\u662f\u5b83\u53ef\u4ee5\u81ea\u52a8\u8bc6\u522b\u80cc\u666f\uff0c\u4e0d\u4ec5\u662f\u989c\u8272\uff0c\u4e5f\u53ef\u4ee5\u662f\u56fe\u7247\u8fd9\u4e9b\uff0c\u7136\u540e\u81ea\u52a8\u914d\u8272\uff0c\u90a3\u5012\u662f\u503c\u5f97\u79f0\u8d5e\u4e00\u756a\u3002<\/p>\n<p>\u6bd4\u65b9\u8bf4\u5b57\u5e55\u989c\u8272\u4f7f\u7528\u767d\u8272\u8fd8\u662f\u9ed1\u8272\uff0c\u5bf9\u5427\uff0c\u8981\u662f\u53ef\u4ee5\u81ea\u52a8\u8bc6\u522b\uff0c\u8fd9\u4e2a\u51fd\u6570\u5c31\u5b9e\u7528\u4e86\u3002<\/p>\n<p>\u773c\u4e0b\u4e48\uff0c\u6211\u89c9\u5f97\u53ea\u80fd\u5f53\u505a\u73a9\u5177\u4f7f\u7528\u4e86\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u61d2\u5f97\u591a\u626f\u6de1\u4e86\uff0c\u611f\u8c22\u9605\u8bfb\uff0c\u6b22\u8fce\u5206\u4eab\uff0c\u4e48\u4e48\u54d2\u3002<\/p>\n<p>\ud83d\ude09\ud83d\ude0a\ud83d\ude07<br \/>\n\ud83e\udd70\ud83d\ude0d\ud83d\ude18<\/p>\n<p>\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u4f1a\u7ecf\u5e38\u66f4\u65b0\u77e5\u8bc6\u70b9\u4ee5\u53ca\u4fee\u6b63\u4e00\u4e9b\u9519\u8bef\uff0c\u56e0\u6b64\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u539f\u51fa\u5904\uff0c\u65b9\u4fbf\u6eaf\u6e90\uff0c\u907f\u514d\u9648\u65e7\u9519\u8bef\u77e5\u8bc6\u7684\u8bef\u5bfc\uff0c\u540c\u65f6\u6709\u66f4\u597d\u7684\u9605\u8bfb\u4f53\u9a8c\u3002<br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=12109\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=12109<\/a><\/p>\n<p>\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202606\/2026-6-1_225147.webp\" width=\"160\" height=\"104\" alt=\"\u5bf9\u6bd4\u989c\u8272\u51fd\u6570\u5c01\u9762\u56fe\" class=\"alignright size-medium\" loading=\"lazy\" \/><\/p>\n<p>CSS\u7ec8\u4e8e\u51fa\u4e86\u4e2a\u53ef\u4ee5\u81ea\u52a8\u5339\u914d\u8272\u503c\u5bf9\u6bd4\u5ea6\u7684\u51fd\u6570\uff0c\u8fd9\u5728\u65e0\u969c\u788d\u8bbf\u95ee\u9886\u57df\u7279\u522b\u53d7\u7528\uff0c\u524d\u666f\u80cc\u666f\u8272\u4ece\u6b64\u53ef\u4ee5\u81ea\u52a8\u9002\u914d\u4e86\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[333,1364,2130,1803,700,251],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/12109"}],"collection":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/comments?post=12109"}],"version-history":[{"count":5,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/12109\/revisions"}],"predecessor-version":[{"id":12258,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/12109\/revisions\/12258"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=12109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=12109"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=12109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}