<color> | CSS

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句法
插值
Accessibility considerations
范例
规范
浏览器兼容性
另请参阅
相关话题

<color> CSS data type represents a color in the sRGB color space . A <color> may also include an alpha-channel transparency value , indicating how the color should composite with its background.

A <color> can be defined in any of the following ways:

Using a keyword (such as blue or transparent )
使用 RGB cubic-coordinate system (via the #-hexadecimal or the rgb() and rgba() functional notations)
使用 HSL cylindrical-coordinate system (via the hsl() and hsla() functional notations)

注意： This article describes the <color> data type in detail. To learn more about using color in HTML, see Applying color to HTML elements using CSS .

句法

<color> data type is specified using one of the options listed below.

注意： Although <color> values are precisely defined, their actual appearance may vary (sometimes significantly) from device to device. This is because most devices are not calibrated, and some browsers do not support output devices' color profiles .

Color keywords

Color keywords are case-insensitive identifiers that represent a specific color, such as red , blue , black ，或 lightseagreen . Although the names more or less describes their respective colors, they are essentially artificial, without a strict rationale behind the names used.

There are a few caveats to consider when using color keywords:

HTML only recognizes the 16 basic color keywords found in CSS1, using a specific algorithm to convert unrecognized values (often to completely different colors). The other color keywords should only be used in CSS and SVG .
Unlike HTML, CSS will completely ignore unknown keywords.
The color keywords all represent plain, solid colors, without transparency.
Several keywords are aliases for each other:
- aqua / cyan
- fuchsia / magenta
- darkgray / darkgrey
- darkslategray / darkslategrey
- dimgray / dimgrey
- lightgray / lightgrey
- lightslategray / lightslategrey
- gray / grey
- slategray / slategrey
Though many keywords have been adapted from X11 , their RGB values may differ from the corresponding color on X11 systems since manufacturers sometimes tailor X11 colors to their specific hardware.

注意： The list of accepted keywords has undergone many changes during the evolution of CSS:

CSS Level 1 only included 16 basic colors, called the VGA colors as they were taken from the set of displayable colors on VGA graphics cards.
CSS Level 2 added the orange 关键词。
Although various colors not in the specification (mostly adapted from the X11 colors list) were supported by early browsers, it wasn't until SVG 1.0 and CSS Colors Level 3 that they were formally defined. They are called the extended color keywords ， X11 colors ，或 SVG colors .
CSS Colors Level 4 added the rebeccapurple keyword to honor web pioneer Eric Meyer .

规范	Keyword	RGB hex value
CSS Level 1	`black`	`#000000`
	`silver`	`#c0c0c0`
	`gray`	`#808080`
	`white`	`#ffffff`
	`maroon`	`#800000`
	`red`	`#ff0000`
	`purple`	`#800080`
	`fuchsia`	`#ff00ff`
	`green`	`#008000`
	`lime`	`#00ff00`
	`olive`	`#808000`
	`yellow`	`#ffff00`
	`navy`	`#000080`
	`blue`	`#0000ff`
	`teal`	`#008080`
	`aqua`	`#00ffff`
CSS Level 2 (Revision 1)	`orange`	`#ffa500`
CSS Color Module Level 3	`aliceblue`	`#f0f8ff`
	`antiquewhite`	`#faebd7`
	`aquamarine`	`#7fffd4`
	`azure`	`#f0ffff`
	`beige`	`#f5f5dc`
	`bisque`	`#ffe4c4`
	`blanchedalmond`	`#ffebcd`
	`blueviolet`	`#8a2be2`
	`brown`	`#a52a2a`
	`burlywood`	`#deb887`
	`cadetblue`	`#5f9ea0`
	`chartreuse`	`#7fff00`
	`chocolate`	`#d2691e`
	`coral`	`#ff7f50`
	`cornflowerblue`	`#6495ed`
	`cornsilk`	`#fff8dc`
	`crimson`	`#dc143c`
	`cyan` (synonym of `aqua` )	`#00ffff`
	`darkblue`	`#00008b`
	`darkcyan`	`#008b8b`
	`darkgoldenrod`	`#b8860b`
	`darkgray`	`#a9a9a9`
	`darkgreen`	`#006400`
	`darkgrey`	`#a9a9a9`
	`darkkhaki`	`#bdb76b`
	`darkmagenta`	`#8b008b`
	`darkolivegreen`	`#556b2f`
	`darkorange`	`#ff8c00`
	`darkorchid`	`#9932cc`
	`darkred`	`#8b0000`
	`darksalmon`	`#e9967a`
	`darkseagreen`	`#8fbc8f`
	`darkslateblue`	`#483d8b`
	`darkslategray`	`#2f4f4f`
	`darkslategrey`	`#2f4f4f`
	`darkturquoise`	`#00ced1`
	`darkviolet`	`#9400d3`
	`deeppink`	`#ff1493`
	`deepskyblue`	`#00bfff`
	`dimgray`	`#696969`
	`dimgrey`	`#696969`
	`dodgerblue`	`#1e90ff`
	`firebrick`	`#b22222`
	`floralwhite`	`#fffaf0`
	`forestgreen`	`#228b22`
	`gainsboro`	`#dcdcdc`
	`ghostwhite`	`#f8f8ff`
	`gold`	`#ffd700`
	`goldenrod`	`#daa520`
	`greenyellow`	`#adff2f`
	`grey`	`#808080`
	`honeydew`	`#f0fff0`
	`hotpink`	`#ff69b4`
	`indianred`	`#cd5c5c`
	`indigo`	`#4b0082`
	`ivory`	`#fffff0`
	`khaki`	`#f0e68c`
	`lavender`	`#e6e6fa`
	`lavenderblush`	`#fff0f5`
	`lawngreen`	`#7cfc00`
	`lemonchiffon`	`#fffacd`
	`lightblue`	`#add8e6`
	`lightcoral`	`#f08080`
	`lightcyan`	`#e0ffff`
`lightgoldenrodyellow`	`#fafad2`
`lightgray`	`#d3d3d3`
`lightgreen`	`#90ee90`
`lightgrey`	`#d3d3d3`
`lightpink`	`#ffb6c1`
`lightsalmon`	`#ffa07a`
`lightseagreen`	`#20b2aa`
`lightskyblue`	`#87cefa`
`lightslategray`	`#778899`
`lightslategrey`	`#778899`
`lightsteelblue`	`#b0c4de`
`lightyellow`	`#ffffe0`
`limegreen`	`#32cd32`
`linen`	`#faf0e6`
`magenta` (synonym of `fuchsia` )	`#ff00ff`
`mediumaquamarine`	`#66cdaa`
`mediumblue`	`#0000cd`
`mediumorchid`	`#ba55d3`
`mediumpurple`	`#9370db`
`mediumseagreen`	`#3cb371`
`mediumslateblue`	`#7b68ee`
`mediumspringgreen`	`#00fa9a`
`mediumturquoise`	`#48d1cc`
`mediumvioletred`	`#c71585`
`midnightblue`	`#191970`
`mintcream`	`#f5fffa`
`mistyrose`	`#ffe4e1`
`moccasin`	`#ffe4b5`
`navajowhite`	`#ffdead`
`oldlace`	`#fdf5e6`
`olivedrab`	`#6b8e23`
`orangered`	`#ff4500`
`orchid`	`#da70d6`
`palegoldenrod`	`#eee8aa`
`palegreen`	`#98fb98`
`paleturquoise`	`#afeeee`
`palevioletred`	`#db7093`
`papayawhip`	`#ffefd5`
`peachpuff`	`#ffdab9`
`peru`	`#cd853f`
`pink`	`#ffc0cb`
`plum`	`#dda0dd`
`powderblue`	`#b0e0e6`
`rosybrown`	`#bc8f8f`
`royalblue`	`#4169e1`
`saddlebrown`	`#8b4513`
`salmon`	`#fa8072`
`sandybrown`	`#f4a460`
`seagreen`	`#2e8b57`
`seashell`	`#fff5ee`
`sienna`	`#a0522d`
`skyblue`	`#87ceeb`
`slateblue`	`#6a5acd`
`slategray`	`#708090`
`slategrey`	`#708090`
`snow`	`#fffafa`
`springgreen`	`#00ff7f`
`steelblue`	`#4682b4`
`tan`	`#d2b48c`
`thistle`	`#d8bfd8`
`tomato`	`#ff6347`
`turquoise`	`#40e0d0`
`violet`	`#ee82ee`
`wheat`	`#f5deb3`
`whitesmoke`	`#f5f5f5`
`yellowgreen`	`#9acd32`
CSS Color Module Level 4	`rebeccapurple`	`#663399`

`transparent` keyword

transparent keyword represents a fully transparent color. This makes the background behind the colored item completely visible. Technically, transparent is a shortcut for rgba(0,0,0,0) .

Compatibility note: To prevent unexpected behavior, such as in a <gradient> , the current CSS spec states that transparent should be calculated in the alpha-premultiplied color space . However, be aware that older browsers may treat it as black with an alpha value of 0 .

Historical note: transparent wasn't a true color in CSS Level 2 (Revision 1). It was a special keyword that could be used instead of a regular <color> value on two CSS properties: background and border . It was essentially added to allow developers to override an inherited solid color. With the advent of alpha channels in CSS Colors Level 3, transparent was redefined as a true color. It can now be used wherever a <color> value can be used.

`currentcolor` keyword

currentcolor keyword represents the value of an element's color property. This lets you use the color value on properties that do not receive it by default.

若 currentcolor is used as the value of the color property, it instead takes its value from the inherited value of the color 特性。

currentcolor example

HTML

<div style="color:blue; border: 1px dashed currentcolor;">
  The color of this text is blue.
  <div style="background:currentcolor; height:9px;"></div>
  This block is surrounded by a blue border.
</div>

结果

RGB colors

The RGB color model defines a given color according to its red, green, and blue components. An optional alpha component represents the color's transparency.

句法

RGB colors can be expressed through both hexadecimal (prefixed with # ) and functional ( rgb() , rgba() ) notations.

注意： As of CSS Colors Level 4, rgba() is an alias for rgb() . In browsers that implement the Level 4 standard, they accept the same parameters and behave the same way.

Hexadecimal notation: #RRGGBB[AA]: R (red), G (green), B (blue), and A (alpha) are hexadecimal characters (0–9, A–F). A is optional. For example, #ff0000 相当于 #ff0000ff .
Hexadecimal notation: #RGB[A]: R (red), G (green), B (blue), and A (alpha) are hexadecimal characters (0–9, A–F). A is optional. The three-digit notation ( #RGB ) is a shorter version of the six-digit form ( #RRGGBB ). For example, #f09 is the same color as #ff0099 . Likewise, the four-digit RGB notation ( #RGBA ) is a shorter version of the eight-digit form ( #RRGGBBAA ). For example, #0f38 is the same color as #00ff3388 .
Functional notation: rgb[a](R, G, B[, A]): R (red), G (green), and B (blue) can be either <number> s or <percentage> s, where the number 255 corresponds to 100% . A (alpha) can be a <number> between 0 and 1 ，或 <percentage> , where the number 1 corresponds to 100% (full opacity).
Functional notation: rgb[a](R G B[ / A])

HSL colors

The HSL color model defines a given color according to its hue, saturation, and lightness components. An optional alpha component represents the color's transparency.

Many designers find HSL more intuitive than RGB, since it allows hue, saturation, and lightness to each be adjusted independently. HSL can also make it easier to create a set of matching colors (such as when you want multiple shades of a single hue).

句法

HSL colors are expressed through the functional hsl() and hsla() notations.

注意 : As of CSS Colors Level 4, hsla() is an alias for hsl() . In browsers that implement the Level 4 standard, they accept the same parameters and behave the same way.

Functional notation: hsl[a](H, S, L[, A]): H (hue) 是 <angle> of the color circle given in deg s, rad s, grad s, or turn s in CSS Color Module Level 4 . When written as a unitless <number> , it is interpreted as degrees, as specified in CSS Color Module Level 3 . By definition, red=0deg=360deg, with the other colors spread around the circle, so green=120deg, blue=240deg, etc. As an <angle> , it implicitly wraps around such that -120deg=240deg, 480deg=120deg, -1turn=1turn, etc.; S (saturation) and L (lightness) are percentages. 100% saturation is completely saturated, while 0% is completely unsaturated (gray). 100% lightness is white, 0% lightness is black, and 50% lightness is “normal.”; A (alpha) can be a <number> between 0 and 1 ，或 <percentage> , where the number 1 corresponds to 100% (full opacity).
Functional notation: hsl[a](H S L[ / A])

System Colors

在 forced colors mode (detectable with the forced-colors media query), most colors are restricted into a user- and browser-defined palette. These system colors are exposed by the following keywords, which can be used to ensure that the rest of the page integrates well with the restricted palette. These values may also be used in other contexts, but are not widely supported by browsers.

The keywords in the following list are defined by the CSS Color Module Level 4 specification.

Note that these keywords are case insensitive , but are listed here with mixed case for readability.

ActiveText
ButtonFace
ButtonText
Canvas
CanvasText
Field
FieldText
GrayText
Highlight
HighlightText
LinkText
VisitedText

Deprecated system color keywords

The following keywords were defined in earlier versions of the CSS Color Module. They are now deprecated. for use on public web pages.

ActiveBorder
ActiveCaption
AppWorkspace
Background
ButtonHighlight
ButtonShadow
CaptionText
InactiveBorder
InactiveCaption
InactiveCaptionText
InfoBackground
InfoText
Menu
MenuText
Scrollbar
ThreeDDarkShadow
ThreeDFace
ThreeDHighlight
ThreeDLightShadow
ThreeDShadow
Window
WindowFrame
WindowText

Mozilla System Color Extensions

-moz-ButtonDefault
-moz-ButtonHoverFace
-moz-ButtonHoverText
-moz-CellHighlight
-moz-CellHighlightText
-moz-Combobox
-moz-ComboboxText
-moz-Dialog
-moz-DialogText
-moz-dragtargetzone: -moz-EvenTreeRow
Background color for even-numbered rows in a tree. Should be used with the -moz-FieldText foreground color. In Gecko versions prior to 1.9, use -moz-Field 。另请参阅 -moz-OddTreeRow .
-moz-html-CellHighlight
-moz-html-CellHighlightText
-moz-mac-accentdarkestshadow: -moz-mac-accentdarkshadow; -moz-mac-accentface; -moz-mac-accentlightesthighlight; -moz-mac-accentlightshadow; -moz-mac-accentregularhighlight; -moz-mac-accentregularshadow; -moz-mac-chrome-active
-moz-mac-chrome-inactive
-moz-mac-focusring: -moz-mac-menuselect; -moz-mac-menushadow; -moz-mac-menutextselect; -moz-MenuHover
Background color for hovered menu items. Often similar to Highlight . Should be used with the -moz-MenuHoverText or -moz-MenuBarHoverText foreground color.
-moz-MenuHoverText
-moz-MenuBarText
-moz-MenuBarHoverText
-moz-nativehyperlinktext
-moz-OddTreeRow
-moz-win-communicationstext
-moz-win-mediatext
-moz-win-accentcolor
-moz-win-accentcolortext

Mozilla Color Preference Extensions

-moz-activehyperlinktext
-moz-default-background-color
-moz-default-color
-moz-hyperlinktext
-moz-visitedhyperlinktext

插值

In animations and gradients , <color> values are interpolated on each of their red, green, and blue components. Each component is interpolated as a real, floating-point number. Note that interpolation of colors happens in the alpha-premultiplied sRGBA color space to prevent unexpected gray colors from appearing. In animations, the interpolation's speed is determined by the timing function .

Accessibility considerations

Some people have difficulty distinguishing colors. The WCAG 2.0 recommendation strongly advises against using color as the only means of conveying a specific message, action, or result. See Color and color contrast 了解更多信息。

范例

Color value tester

In this example we provide a <div> and a text input. Entering a valid color into the input causes the <div> to adopt that color, allowing you to test our color values.

HTML

<div></div>
<hr>
<label for="color">Enter a valid color value:</label>
<input type="text" id="color">

CSS

div {
  width: 100%;
  height: 200px;
}

JavaScript

const inputElem = document.querySelector('input');
const divElem = document.querySelector('div');
function validTextColor(stringToTest) {
  if (stringToTest === "") { return false; }
  if (stringToTest === "inherit") { return false; }
  if (stringToTest === "transparent") { return false; }
  const image = document.createElement("img");
  image.style.color = "rgb(0, 0, 0)";
  image.style.color = stringToTest;
  if (image.style.color !== "rgb(0, 0, 0)") { return true; }
  image.style.color = "rgb(255, 255, 255)";
  image.style.color = stringToTest;
  return image.style.color !== "rgb(255, 255, 255)";
}
inputElem.addEventListener('change', () => {
  if(validTextColor(inputElem.value)) {
    divElem.style.backgroundColor = inputElem.value;
    divElem.textContent = '';
  } else {
    divElem.style.backgroundColor = 'white';
    divElem.textContent = 'Invalid color value';
  }
});

结果

RGB syntax variations

This example shows the many ways in which a single color can be created with the various RGB color syntaxes.

/* These syntax variations all specify the same color: a fully opaque hot pink. */
/* Hexadecimal syntax */
#f09
#F09
#ff0099
#FF0099
/* Functional syntax */
rgb(255,0,153)
rgb(255, 0, 153)
rgb(255, 0, 153.0)
rgb(100%,0%,60%)
rgb(100%, 0%, 60%)
rgb(100%, 0, 60%) /* ERROR! Don't mix numbers and percentages. */
rgb(255 0 153)
/* Hexadecimal syntax with alpha value */
#f09f
#F09F
#ff0099ff
#FF0099FF
/* Functional syntax with alpha value */
rgb(255, 0, 153, 1)
rgb(255, 0, 153, 100%)
/* Whitespace syntax */
rgb(255 0 153 / 1)
rgb(255 0 153 / 100%)
/* Functional syntax with floats value */
rgb(255, 0, 153.6, 1)
rgb(1e2, .5e1, .5e0, +.25e2%)

RGB transparency variations

/* Hexadecimal syntax */
#3a30                    /*   0% opaque green */ 
#3A3F                    /* full opaque green */ 
#33aa3300                /*   0% opaque green */ 
#33AA3380                /*  50% opaque green */ 
/* Functional syntax */
rgba(51, 170, 51, .1)    /*  10% opaque green */ 
rgba(51, 170, 51, .4)    /*  40% opaque green */ 
rgba(51, 170, 51, .7)    /*  70% opaque green */ 
rgba(51, 170, 51,  1)    /* full opaque green */ 
/* Whitespace syntax */
rgba(51 170 51 / 0.4)    /*  40% opaque green */ 
rgba(51 170 51 / 40%)    /*  40% opaque green */ 
/* Functional syntax with floats value */
rgba(255, 0, 153.6, 1)
rgba(1e2, .5e1, .5e0, +.25e2%)

HSL syntax variations

/* These examples all specify the same color: a lavender. */
hsl(270,60%,70%)
hsl(270, 60%, 70%)
hsl(270 60% 70%)
hsl(270deg, 60%, 70%)
hsl(4.71239rad, 60%, 70%)
hsl(.75turn, 60%, 70%)
/* These examples all specify the same color: a lavender that is 15% opaque. */
hsl(270, 60%, 50%, .15)
hsl(270, 60%, 50%, 15%)
hsl(270 60% 50% / .15)
hsl(270 60% 50% / 15%)

Fully saturated colors

Notation	描述	Live
`hsl(0, 100%, 50%)`	red
`hsl(30, 100%, 50%)`	orange
`hsl(60, 100%, 50%)`	yellow
`hsl(90, 100%, 50%)`	lime green
`hsl(120, 100%, 50%)`	green
`hsl(150, 100%, 50%)`	blue-green
`hsl(180, 100%, 50%)`	cyan
`hsl(210, 100%, 50%)`	sky blue
`hsl(240, 100%, 50%)`	blue
`hsl(270, 100%, 50%)`	purple
`hsl(300, 100%, 50%)`	magenta
`hsl(330, 100%, 50%)`	pink
`hsl(360, 100%, 50%)`	red

Lighter and darker greens

Notation	描述	Live
`hsl(120, 100%, 0%)`	black
`hsl(120, 100%, 20%)`
`hsl(120, 100%, 40%)`
`hsl(120, 100%, 60%)`
`hsl(120, 100%, 80%)`
`hsl(120, 100%, 100%)`	white

Saturated and desaturated greens

Notation	描述	Live
`hsl(120, 100%, 50%)`	green
`hsl(120, 80%, 50%)`
`hsl(120, 60%, 50%)`
`hsl(120, 40%, 50%)`
`hsl(120, 20%, 50%)`
`hsl(120, 0%, 50%)`	gray

HSL transparency variations

hsla(240, 100%, 50%, .05)     /*   5% opaque blue */ 
hsla(240, 100%, 50%, .4)      /*  40% opaque blue */ 
hsla(240, 100%, 50%, .7)      /*  70% opaque blue */ 
hsla(240, 100%, 50%, 1)       /* full opaque blue */ 
/* Whitespace syntax */
hsla(240 100% 50% / .05)      /*   5% opaque blue */ 
/* Percentage value for alpha */
hsla(240 100% 50% / 5%)       /*   5% opaque blue */

规范

规范	状态	注释
CSS Color Module Level 4	工作草案	添加 `rebeccapurple` , four- ( `#RGBA` ) and eight-digit ( `#RRGGBBAA` ) hexadecimal notations, `rgba()` and `hsla()` as aliases of `rgb()` and `hsl()` (both with identical parameter syntax), space-separated function parameters as an alternative to commas, percentages for alpha values, and angles for the hue component in `hsl()` colors.
CSS Color Module Level 3 The definition of '<color>' in that specification.	推荐	Deprecates system colors. Adds SVG colors and `rgba()` , `hsl()` ，和 `hsla()` functional notations.
CSS Level 2 (Revision 1) The definition of '<color>' in that specification.	推荐	添加 `orange` keyword and system colors.
CSS Level 1 The definition of '<color>' in that specification.	推荐	Initial definition. Includes 16 basic color keywords.

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
<color>	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 3	Opera 完整支持 3.5	Safari 完整支持 1	WebView Android 完整支持 1	Chrome Android 完整支持 18	Firefox Android 完整支持 4	Opera Android 完整支持 10.1	Safari iOS 完整支持 1	Samsung Internet Android 完整支持 1.0
Alpha color values ( `rgba()` , `hsla()` )	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 3	IE 完整支持 9	Opera 完整支持 10	Safari 完整支持 3.1	WebView Android 完整支持 ≤37	Chrome Android 完整支持 18	Firefox Android 完整支持 4	Opera Android 完整支持 10.1	Safari iOS 完整支持 2	Samsung Internet Android 完整支持 1.0
RGBA hexadecimal notation ( `#RRGGBBAA` , `#RGBA` )	Chrome 完整支持 62 完整支持 62 完整支持 52 Disabled Disabled From version 52: this feature is behind the `Enable experimental Web Platform features` preference. To change preferences in Chrome, visit chrome://flags.	Edge 完整支持 79	Firefox 完整支持 49	IE 不支持 No	Opera 完整支持 49 完整支持 49 完整支持 39 Disabled Disabled From version 39: this feature is behind the `Enable experimental Web Platform features` preference.	Safari 完整支持 9.1	WebView Android 完整支持 62	Chrome Android 完整支持 62 完整支持 62 完整支持 52 Disabled Disabled From version 52: this feature is behind the `Enable experimental Web Platform features` preference. To change preferences in Chrome, visit chrome://flags.	Firefox Android 完整支持 49	Opera Android 完整支持 47 完整支持 47 完整支持 41 Disabled Disabled From version 41: this feature is behind the `Enable experimental Web Platform features` preference.	Safari iOS 完整支持 9.3	Samsung Internet Android 完整支持 8.0
`currentcolor`	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1.5	IE 完整支持 9	Opera 完整支持 9.5	Safari 完整支持 4	WebView Android 完整支持 37	Chrome Android 完整支持 18	Firefox Android 完整支持 4	Opera Android 完整支持 14	Safari iOS 完整支持 3.2	Samsung Internet Android 完整支持 1.0
Allow floats in `rgb()` and `rgba()`	Chrome 完整支持 66	Edge 完整支持 79	Firefox 完整支持 52	IE 不支持 No	Opera 完整支持 53	Safari 完整支持 12.1	WebView Android 完整支持 66	Chrome Android 完整支持 66	Firefox Android 完整支持 52	Opera Android 完整支持 47	Safari iOS 完整支持 12.2	Samsung Internet Android 完整支持 9.0
HSL color values ( `hsl()` )	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 9	Opera 完整支持 9.5	Safari 完整支持 3.1	WebView Android 完整支持 ≤37	Chrome Android 完整支持 18	Firefox Android 完整支持 4	Opera Android 完整支持 10.1	Safari iOS 完整支持 2	Samsung Internet Android 完整支持 1.0
`hsl()` can accept alpha values	Chrome 完整支持 65	Edge 完整支持 79	Firefox 完整支持 52	IE 不支持 No	Opera 完整支持 52	Safari 完整支持 12.1	WebView Android 完整支持 65	Chrome Android 完整支持 65	Firefox Android 完整支持 52	Opera Android 完整支持 47	Safari iOS 完整支持 12.2	Samsung Internet Android 完整支持 9.0
Keyword color values	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 3 注意事项完整支持 3 注意事项注意事项 Internet Explorer 8 and later support gray color keywords spelled with an e ( `grey` , `darkgrey` , `darkslategrey` , `dimgrey` , `lightgrey` ，和 `lightslategrey` ). Internet Explorer 3 to Internet Explorer 7 only support the keywords spelled with a ( `gray` , `darkgray` , `darkslategray` , `dimgray` , `lightgray` ，和 `lightslategray` ).	Opera 完整支持 3.5	Safari 完整支持 1	WebView Android 完整支持 ≤37	Chrome Android 完整支持 18	Firefox Android 完整支持 4	Opera Android 完整支持 10.1	Safari iOS 完整支持 1	Samsung Internet Android 完整支持 1.0
`rebeccapurple`	Chrome 完整支持 38	Edge 完整支持 12	Firefox 完整支持 33	IE 完整支持 11	Opera 完整支持 25	Safari 完整支持 9	WebView Android 完整支持 38	Chrome Android 完整支持 38	Firefox Android 完整支持 33	Opera Android 完整支持 25	Safari iOS 完整支持 8	Samsung Internet Android 完整支持 3.0
`rgb()` can accept alpha values	Chrome 完整支持 65	Edge 完整支持 79	Firefox 完整支持 52	IE 不支持 No	Opera 完整支持 52	Safari 完整支持 12.1	WebView Android 完整支持 65	Chrome Android 完整支持 65	Firefox Android 完整支持 52	Opera Android 完整支持 47	Safari iOS 完整支持 12.2	Samsung Internet Android 完整支持 9.0
RGB functional notation ( `rgb()` )	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 4	Opera 完整支持 3.5	Safari 完整支持 1	WebView Android 完整支持 ≤37	Chrome Android 完整支持 18	Firefox Android 完整支持 4	Opera Android 完整支持 10.1	Safari iOS 完整支持 1	Samsung Internet Android 完整支持 1.0
RGB hexadecimal notation ( `#RRGGBB` , `#RGB` )	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 1	IE 完整支持 3	Opera 完整支持 3.5	Safari 完整支持 1	WebView Android 完整支持 ≤37	Chrome Android 完整支持 18	Firefox Android 完整支持 4	Opera Android 完整支持 10.1	Safari iOS 完整支持 1	Samsung Internet Android 完整支持 1.0
Space-separated functional color notations	Chrome 完整支持 65	Edge 完整支持 79	Firefox 完整支持 52	IE 不支持 No	Opera 完整支持 52	Safari 完整支持 12.1	WebView Android 完整支持 65	Chrome Android 完整支持 65	Firefox Android 完整支持 52	Opera Android 完整支持 47	Safari iOS 完整支持 12.2	Samsung Internet Android 完整支持 9.0
`transparent`	Chrome 完整支持 1	Edge 完整支持 12	Firefox 完整支持 3	IE 完整支持 9	Opera 完整支持 10	Safari 完整支持 3.1	WebView Android 完整支持 37	Chrome Android 完整支持 18	Firefox Android 完整支持 4	Opera Android 完整支持 10.1	Safari iOS 完整支持 2	Samsung Internet Android 完整支持 1.0

图例

完整支持
不支持
见实现注意事项。
用户必须明确启用此特征。

另请参阅

opacity property lets you define transparency at the element level.
Some common properties that use this data type: color , background-color , border-color , box-shadow , outline-color , text-shadow
Applying color to HTML elements using CSS

元数据

最后修改： 2020 年 7 月 29 日

在此页

句法

Color keywords

transparent keyword

currentcolor keyword

currentcolor example

HTML

结果

RGB colors

句法

HSL colors

句法

System Colors

Deprecated system color keywords

Mozilla System Color Extensions

Mozilla Color Preference Extensions

插值

Accessibility considerations

范例

Color value tester

HTML

CSS

JavaScript

结果

RGB syntax variations

RGB transparency variations

HSL syntax variations

Fully saturated colors

Lighter and darker greens

Saturated and desaturated greens

HSL transparency variations

规范

浏览器兼容性

图例

另请参阅

相关话题

`transparent` keyword

`currentcolor` keyword