The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.
语法
/* 关键词 */
color: currentcolor;
/* <named-color>值 */
color: red;
color: orange;
color: tan;
color: rebeccapurple;
/* <hex-color>值 */
color: #090;
color: #009900;
color: #090a;
color: #009900aa;
/* <rgb()>值 */
color: rgb(34, 12, 64, 0.6);
color: rgba(34, 12, 64, 0.6);
color: rgb(34 12 64 / 0.6);
color: rgba(34 12 64 / 0.3);
color: rgb(34.0 12 64 / 60%);
color: rgba(34.6 12 64 / 30%);
/* <hsl()>值 */
color: hsl(30, 100%, 50%, 0.6);
color: hsla(30, 100%, 50%, 0.6);
color: hsl(30 100% 50% / 0.6);
color: hsla(30 100% 50% / 0.6);
color: hsl(30.0 100% 50% / 60%);
color: hsla(30.2 100% 50% / 60%);
/* 全局值 */
color: inherit;
color: initial;
color: unset;
color
属性被指定为一个单个的 <color>
值。
注意值必须是规则的 color
。它不可以是<gradient>
(实际上为<image>
的一部分)。
值
<color>
- 设置元素的文本或装饰的颜色。
Accessibility concerns
It is important to ensure that the contrast ratio between the color of the text and the background the text is placed over is high enough that people experiencing low vision conditions will be able to read the content of the page.
Color contrast ratio is determined by comparing the luminosity of the text and background color values. In order to meet current Web Content Accessibility Guidelines (WCAG), a ratio of 4.5:1 is required for text content and 3:1 for larger text such as headings. Large text is defined as 18.66px and bold or larger, or 24px or larger.
正规定义
初始值 | Varies from one browser to another |
---|---|
适用元素 | all elements. It also applies to ::first-letter and ::first-line . |
是否是继承属性 | yes |
计算值 | If the value is translucent, the computed value will be the rgba() corresponding one. If it isn't, it will be the rgb() corresponding one. The transparent keyword maps to rgba(0,0,0,0) . |
Animation type | a color |
正规语法
<color>where
<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>
where
<rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]? ) | rgb( <number>{3} [ / <alpha-value> ]? ) | rgb( <percentage>#{3} , <alpha-value>? ) | rgb( <number>#{3} , <alpha-value>? )
<rgba()> = rgba( <percentage>{3} [ / <alpha-value> ]? ) | rgba( <number>{3} [ / <alpha-value> ]? ) | rgba( <percentage>#{3} , <alpha-value>? ) | rgba( <number>#{3} , <alpha-value>? )
<hsl()> = hsl( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsl( <hue>, <percentage>, <percentage>, <alpha-value>? )
<hsla()> = hsla( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsla( <hue>, <percentage>, <percentage>, <alpha-value>? )where
<alpha-value> = <number> | <percentage>
<hue> = <number> | <angle>
示例
使文本为红色
以下方式可以使得文本显示为红色:
p { color: red; }
p { color: #f00; }
p { color: #ff0000; }
p { color: rgb(255,0,0); }
p { color: rgb(100%, 0%, 0%); }
p { color: hsl(0, 100%, 50%); }
/* 50%透明 */
p { color: #ff000080; }
p { color: rgba(255, 0, 0, 0.5); }
p { color: hsla(0, 100%, 50%, 0.5); }
指定
Specification | Status | Comment |
---|---|---|
CSS Color Module Level 4 color |
Working Draft | Adds commaless syntaxes for the rgb() , rgba() , hsl() , and hsla() functions. Allows alpha values in rgb() and hsl() , turning rgba() and hsla() into (deprecated) aliases for them.Adds color keyword rebeccapurple .Adds 4- and 8-digit hex color values, where the last digit(s) represents the alpha value. Adds hwb() , device-cmyk() , and color() functions. |
CSS Color Module Level 3 color |
Recommendation | Deprecates system-colors. Adds SVG colors. Adds the rgba() , hsl() , and hsla() functions. |
CSS Level 2 (Revision 1) color |
Recommendation | Adds the orange color and the system colors. |
CSS Level 1 color |
Recommendation | Initial definition. |
浏览器兼容性
BCD tables only load in the browser