Question

How to Convert RGB to HEX in JavaScript

Show the 2 errors

function ColorToHex(color) {

  var hexadecimal = color.toString(16);

  return hexadecimal.length == 1 ? "0" + hexadecimal : hexadecimal;
}


function ConvertRGBtoHex(red, green, blue) {

  return "#" + ColorToHex(red) + ColorToHex(green) + ColorToHex(blue);

}
console.log(ConvertRGBtoHex(255, 100, 200));
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Bobby Iliev
Site Moderator
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• July 11, 2022

Hi there,

The one that you’ve shared looks good! Here is another alternative:

const rgbToHex = (r, g, b) => '#' + [r, g, b].map(x => {
  const hex = x.toString(16)
  return hex.length === 1 ? '0' + hex : hex
}).join('')

console.log(rgbToHex(0, 105, 255)); // '#0069ff'

Best,

Bobby