# p5.js | hex() function

The hex() function in p5.js is used to convert a number into its hexadecimal notation.

Syntax:

`hex(Number)`

Parameters: This function accepts a parameter Number which are to be converted into its hexadecimal form. This parameter might also be an array of numbers.

Return Value: It returns the converted hexadecimal representation.

Below program illustrates the hex() function in p5.js.
Example-1:

 `function` `setup() { ` ` `  `    ``// Creating Canvas size ` `    ``createCanvas(600, 200); ` `} ` ` `  `function` `draw() { ` ` `  `    ``// Set the background color  ` `    ``background(220); ` ` `  `    ``// Initializing some numbers ` `    ``let Number1 = 20; ` `    ``let Number2 = 255; ` `    ``let Number3 = 0; ` `    ``let Number4 = 25; ` `    ``let Number5 = 70; ` ` `  `    ``// Calling to hex() function. ` `    ``let A = hex(Number1); ` `    ``let B = hex(Number2); ` `    ``let C = hex(Number3); ` `    ``let D = hex(Number4); ` `    ``let E = hex(Number5); ` ` `  `    ``// Set the size of text  ` `    ``textSize(16); ` ` `  `    ``// Set the text color  ` `    ``fill(color(``'red'``)); ` ` `  `    ``// Getting hexadecimal notation ` `    ``text(``"Hexadecimal representation of 20 is: "` `+ A, 50, 30); ` `    ``text(``"Hexadecimal representation of 255 is: "` `+ B, 50, 60); ` `    ``text(``"Hexadecimal representation of 0 is: "` `+ C, 50, 90); ` `    ``text(``"Hexadecimal representation of 25 is: "` `+ D, 50, 110); ` `    ``text(``"Hexadecimal representation of 70 is: "` `+ E, 50, 140); ` `} `

Output: Example-2:

 `function` `setup() { ` ` `  `    ``// Creating Canvas size ` `    ``createCanvas(650, 100); ` `} ` ` `  `function` `draw() { ` ` `  `    ``// Set the background color  ` `    ``background(220); ` ` `  `    ``// Initializing some numbers ` `    ``let Number1 = [20, 255, 30]; ` `    ``let Number2 = [255, 7, 9]; ` ` `  `    ``// Calling to hex() function. ` `    ``let A = hex(Number1); ` `    ``let B = hex(Number2); ` ` `  `    ``// Set the size of text  ` `    ``textSize(16); ` ` `  `    ``// Set the text color  ` `    ``fill(color(``'red'``)); ` ` `  `    ``// Getting hexadecimal notation ` `    ``text(``"Hexadecimal representation of [20, 255, 30] is: "` `     ``+ A, 50, 30); ` `    ``text(``"Hexadecimal representation of [255, 7, 9] is: "`  `     ``+ B, 50, 60); ` `} `

Output: Reference: https://p5js.org/reference/#/p5/hex

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