The d3.cubehelix() function in D3.js is used to construct a new Cubehelix color and returns HSL properties of the specified color taken as the parameter of the function.
Syntax:
d3.cubehelix(color);
Parameters: This function accepts single parameter color which specifies the CSS color.
Return Value: This function returns HSL properties of the specified CSS color taken as the parameter of the function.
Below programs illustrate the d3.cubehelix() function in D3.js:
Example 1:
<!DOCTYPE html> <html>   <head>     <title>d3.cubehelix() function</title>   </head>   <body>     <script>                   // Calling the d3.cubehelix() function function         // with some parameters         var color1 = d3.cubehelix("red");         var color2 = d3.cubehelix("green");         var color3 = d3.cubehelix("blue");                 // Getting the HSL properties         console.log(color1);         console.log(color2);         console.log(color3);     </script> </body>   </html> |
Output:
{"h":351.8102617708421, "s":1.9488976453722686, "l":0.2999994453152424, "opacity":1}
{"h":109.95916521883123, "s":1.1193720244160954, "l":0.29615736727228126, "opacity":1}
{"h":236.94217167732103, "s":4.614386868039719, "l":0.10999954957200976, "opacity":1}
Example 2:
<!DOCTYPE html> <html>   <head>     <title>d3.cubehelix() function</title>   </head>   <body>     <script>                   // Calling the d3.cubehelix() function function         // without any parameters         var color = d3.cubehelix();                 // Getting the HSL values         console.log(color);     </script> </body>   </html> |
Output:
{"h":null, "s":null, "l":null, "opacity":1}
Reference: https://devdocs.io/d3~5/d3-color#cubehelix
