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Euclidean distance isn't the most appropriate to find nearest color

Per Cem Kalyoncu's comment on StackOverflow, the Euclidean distance over RGB is nice but for the human eye, lightness is perceived at a logarithmic scale.

Run the following in RunKit:

const findColor = require("find-color");

var googleColors = [
  '#4885ed', // blue
  '#f4c20d', // yellow
  '#3cba54', // green
  '#db3236'  // red
];

function findNearest(color) {
  var nearest = findColor.fromHex(googleColors).find(color);
  return (nearest >= 0 ? '#' + nearest.toString(16).toUpperCase() : false)
}

var toFind = '#99CC00';
console.log("googleColors:", googleColors);
console.log("color to match:",toFind,"google color matched:");
findNearest(toFind);

You will see that trying to find the nearest match to a light green color results in returning the Google yellow instead of its green.

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