The d3.hsl() function in D3.js is used to construct a new HSL color and returns HSL properties of the specified color taken as the parameter of the function.
Syntax:
d3.hsl(h, s, l, opacity)
or
d3.hsl(color)
Parameters: This function accepts some parameters as mentioned above and described below:
- h: It is used to set the hue value.
- s: It is used to set the saturation value.
- l: It is used to set the lightness value.
- opacity: It is used to set the opacity/transparency.
- color: It is used to set the color name or hex code.
Return Value: This function returns HSL properties of the specified CSS color taken as the parameter of the function.
Below programs illustrate the d3.hsl() function in D3.js:
Example 1:
javascript
<!DOCTYPE html>
<html>
<head>
<title>
D3.js | d3.hsl() Function
</title>
<script src=
</script>
</head>
<body>
<script>
var color1 = d3.hsl("red");
var color2 = d3.hsl("green");
var color3 = d3.hsl("blue");
console.log(color1);
console.log(color2);
console.log(color3);
</script>
</body>
</html>
|
Output:
{"h":0, "s":1, "l":0.5, "opacity":1}
{"h":120, "s":1, "l":0.25098039215686274, "opacity":1}
{"h":240, "s":1, "l":0.5, "opacity":1}Example 2:
javascript
<!DOCTYPE html>
<html>
<head>
<title>
D3.js | d3.hsl() Function
</title>
<script src=
</script>
</head>
<body>
<script>
var color = d3.hsl();
console.log(color);
</script>
</body>
</html>
|
Output:
{"h":null, "s":null, "l":null, "opacity":1}Ref: https://devdocs.io/d3~5/d3-color#hsl