accent-color

The accent-color CSS property sets the accent color for user-interface controls generated by some elements.

Browsers that support accent-color currently apply it to the following HTML elements:

• <input type="checkbox">
• <input type="radio">
• <input type="range">
• <progress>

auto

Represents a UA-chosen color, which should match the accent color of the platform, if any.

<color>

Specifies the color to be used as the accent color.

auto | <color>
where 
<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hwb()> | <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>? )
<hwb()> = hwb( [<hue> | none] [<percentage> | none] [<percentage> | none] [ / [<alpha-value> | none] ]? )
where 
<alpha-value> = <number> | <percentage>
<hue> = <number> | <angle>

HTML

<input type="checkbox" checked />
<input type="checkbox" class="custom" checked />

CSS

input {
  accent-color: auto;
  display: block;
  width: 30px;
  height: 30px;
}

input.custom {
  accent-color: rebeccapurple;
}

Result

• The <input> element
• Applying color to HTML elements using CSS
• The <color> data type
• Other color-related properties: color, background-color, border-color, outline-color, text-decoration-color, text-emphasis-color, text-shadow, caret-color, and column-rule-color