You can use Name that Color.

Example:

let result = ntc.name('#6195ed');



let rgb_value = result[0];      // #6495ed         : RGB value of closest match

let specific_name = result[1];  // Cornflower Blue : Color name of closest match

let is_exact_match = result[2]; // false           : True if exact color match

There is also a variation of Name that Color that includes additional parameters:

http://www.color-blindness.com/color-name-hue-tool/js/ntc.js

Example:

let result = ntc.name('#6195ed');



let rgb_value = result[0];      // #6495ed         : RGB value of closest match

let specific_name = result[1];  // Cornflower Blue : Color name of closest match

let shade_value = result[2];    // #0000ff         : RGB value of shade of closest match

let shade_name = result[3];     // Blue            : Color name of shade of closest match

let is_exact_match = result[4]; // false           : True if exact color match