D3.js | d3.lab() Function
Last Updated :
14 Aug, 2020
The d3.lab() function in D3.js is used to construct a new Lab color and returns ‘l’, ‘a’ and ‘b’ properties of the specified color taken as the parameter of the function.
Syntax:
d3.lab(color);
Parameters: This function accepts single parameter color which is specified CSS color.
Return Value: This function returns ‘l’, ‘a’ and ‘b’ properties of the specified CSS color taken as the parameter of the function.
Below programs illustrate the d3.lab() function in D3.js:
Example 1:
<!DOCTYPE html>
<html>
<head>
<title>d3.lab() function </title>
</head>
<body>
<script>
var color1 = d3.lab( "red" );
var color2 = d3.lab( "green" );
var color3 = d3.lab( "blue" );
console.log(color1);
console.log(color2);
console.log(color3);
</script>
</body>
</html>
|
Output:
{"l":53.24079414130722, "a":80.09245959641109, "b":67.20319651585301, "opacity":1}
{"l":46.22743146876261, "a":-51.69849552989111, "b":49.8968460010561, "opacity":1}
{"l":32.297010932850725, "a":79.18751984512224, "b":-107.8601617541481, "opacity":1}
Example 2:
<!DOCTYPE html>
<html>
<head>
<title>d3.lab() function </title>
</head>
<body>
<script>
var color = d3.lab();
console.log(color);
</script>
</body>
</html>
|
Output:
{"l":null, "a":null, "b":null, "opacity":1}
Reference: https://devdocs.io/d3~5/d3-color#lab
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