D3.js | d3.lab() Function

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:

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:

Output:

{"l":null, "a":null, "b":null, "opacity":1}

Reference: https://devdocs.io/d3~5/d3-color#lab