generate random color
rgb : red, green, blue
[ Math.random | Math.floor ]

Generate random color

Write a function that returns a random rgb color.

rgb red, green, blue

rgb() is a color model that represents colors as mixtures of three underlying components (or channels) of red, green, and blue.

An rgb color value is specified with the functional notation rgb()

rgb(red, green, blue)

Each parameter (red, green, and blue) defines the primary colors' different intensities with a value between 0-255

rgb(0, 0, 0) → black

rgb(255, 0, 0) → red

rgb(0, 255, 0) → green

rgb(0, 0, 255) → blue

rgb(255, 255, 255) → white

Example ...

Generate random color ...

rgb(171, 67, 81) → random color ....

rgb(180, 138, 46) → random color ....

rgb(118, 158, 150) → random color ....

Numbers are used to represent both integer and floating-point values.

Numbers are most commonly expressed in literal forms like 255 or 3.14159 ↴

let num1 = 5; → number

let num2 = 2.5; → number

let num3 = num1 + num2;

console.log(num3); returns ↴

7.5 → number

Generate random colors using ↴

Math.random() static method → returns a floating-point, pseudo-random number that's greater than or equal to 0 and less than 1.

Math.floor() static method → always rounds down and returns the largest integer less than or equal to a given number.

Random number generation process of generating a number that is not predictable.

Math.random() static method returns a floating-point, pseudo-random number between 0 (inclusive) and 1 (exclusive), with approximately uniform distribution over that range, which can be scaled to a desired range.

Math.random() always returns a number lower than 1

Math.random(); → 0.7409774889800926

Math.random(); → 0.5533596609238658

Math.random(); → 0.26768267226253617

Returns random numbers between 0 (inclusive) and 1 (exclusive)

Math.floor() static method always rounds down and returns the largest integer less than or equal to a given number.

Math.floor(5.25); → 5

Math.floor(2.99); → 2

Math.floor(6.55); → 6

Rounds down and returns the largest integer less than or equal to a given number.

Define a function randomColor to generate a random color in rgb color code.

function randomColor() {}

The function returns a random rgb color string.

Each color component (red, green, blue) is generated using Math.random()

multiplied by 256 to cover the full range of RGB values,

and then rounded down to the nearest whole number using Math.floor()

Generate a random integer between 0-255 for the red component.

const r = Math.floor(Math.random() * 256) r

Generate a random integer between 0-255 for the green component.

const g = Math.floor(Math.random() * 256) g

Generate a random integer between 0-255 for the blue component.

const b = Math.floor(Math.random() * 256) b

Return the RGB color string.

return `rgb(${r}, ${g}, ${b})`

Generate random color.

function randomColor() {

const r = Math.floor(Math.random() * 256);

const g = Math.floor(Math.random() * 256);

const b = Math.floor(Math.random() * 256);

return `rgb(${r}, ${g}, ${b})`;

}

call function

randomColor(); → rgb(171, 67, 81)

randomColor(); → rgb(180, 138, 46)

randomColor(); → rgb(118, 158, 150)

Function returns a random color after each call.

rgba → rgb with optional alpha value

rgba color values are an extension of rgb color values with an alpha channel - which specifies the opacity for a color.

rgba(red, green, blue, alpha)

alpha represents the alpha channel value of the output color.

0 corresponds to 0% fully transparent

1 corresponds to 100% fully opaque

rgb values are each resolved to a number between 0-255 inclusive.

alpha channel value is resolved to a number between 0-1 inclusive.

Generate random color

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