Color temperature

color.js

import colr from 'colr';

let colorTemperature = function(t)
{
  // Map the temperature to a 0-1 range
  var a = (t + 30)/60;
  a = (a < 0) ? 0 : ((a > 1) ? 1 : a);

  // Scrunch the green/cyan range in the middle
  var sign = (a < .5) ? -1 : 1;
  a = sign * Math.pow(2 * Math.abs(a - .5), .35)/2 + .5;

  // Linear interpolation between the cold and hot
  var h0 = 259;
  var h1 = 12;
  var h = (h0) * (1 - a) + (h1) * (a);

  return colr.fromHsv(h, 75, 90).toHex();
};