How to convert rgb color to hex in JavaScript

In this Article we will go through how to convert rgb color to hex only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const rgbToHex = (red, green, blue) => `#${((1 << 24) + (red << 16) + (green << 8) + blue).toString(16).slice(1)}`;

const rgbToHex = (red, green, blue) => `#${[red, green, blue].map(v => v.toString(16).padStart(2, '0')).join('')}`;

rgbToHex(0, 255, 255);      // '#00ffff'