text-decoration-color - CSS: Cascading Style Sheets 编辑

The text-decoration-color CSS property sets the color of decorations added to text by text-decoration-line.

The color applies to decorations, such as underlines, overlines, strikethroughs, and wavy lines like those used to mark misspellings, in the scope of the property's value.

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.

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.

CSS does not provide a direct mechanism for specifying a unique color for each line type. This effect can nevertheless be achieved by nesting elements, applying a different line type to each element (with the text-decoration-line property), and specifying the line color (with text-decoration-color) on a per-element basis.

Syntax

/* <color> values */
text-decoration-color: currentcolor;
text-decoration-color: red;
text-decoration-color: #00ff00;
text-decoration-color: rgba(255, 128, 128, 0.5);
text-decoration-color: transparent;

/* Global values */
text-decoration-color: inherit;
text-decoration-color: initial;
text-decoration-color: unset;

Values

<color>

The color of the line decoration.

Accessibility concerns

It is important to ensure that the contrast ratio between the color of the text, the background the text is placed over, and the text decoration line 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.

Color alone should not be used to convey meaning. For example, change of text and text-decoration-color alone is not enough to indicate a link has focus.

• WebAIM: Color Contrast Checker
• MDN Understanding WCAG, Guideline 1.4 explanations
• Understanding Success Criterion 1.4.3 | W3C Understanding WCAG 2.0

Formal definition

Initial value	currentcolor
Applies to	all elements. It also applies to ::first-letter and ::first-line.
Inherited	no
Computed value	computed color
Animation type	a color

Formal syntax

<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>

Examples

Basic example

<p>This paragraph has <s>some erroneous text</s>
    inside it that I want to call attention to.</p>

p {
  text-decoration-line: underline;
  text-decoration-color: cyan;
}

s {
  text-decoration-line: line-through;
  text-decoration-color: red;
  text-decoration-style: wavy;
}

Specifications

Specification	Status	Comment
CSS Text Decoration Module Level 3 The definition of 'text-decoration-color' in that specification.	Candidate Recommendation	Initial definition. The text-decoration property is now a shorthand to define multiple related properties.

Browser compatibility

BCD tables only load in the browser

See also

• When setting multiple line-decoration properties at once, it may be more convenient to use the text-decoration shorthand property instead.
• The <color> data type
• Other color-related properties: background-color, border-color, outline-color, text-decoration-color, text-emphasis-color, text-shadow, caret-color, and column-rule-color
• Applying color to HTML elements using CSS