How does a random color generator work?
Most random color generators pick a random value from 0 to 255 for each of red, green and blue, or one random number from 0 to 16,777,215 written as six hex digits. The result is then displayed in formats such as HEX, RGB and HSL. Because there are so many possibilities, you will rarely see the same color twice.
How many HEX colors are there?
There are 16,777,216 six-digit HEX colors, because each of the three channels has 256 possible values and 256 × 256 × 256 = 16,777,216. They run from #000000 (black) to #FFFFFF (white). The two extra alpha digits of an 8-digit code multiply that by another 256 levels of transparency.
How do I generate a random HEX color in JavaScript?
A common one-liner is '#' + Math.floor(Math.random() * 16777216).toString(16).padStart(6, '0'). Math.random() returns a number below 1, multiplying by 16,777,216 covers every possible color, and padStart keeps leading zeros so the code always has six digits.
What is the difference between a random color and a random palette?
A random color generator gives you independent colors with no relationship between them, which is ideal for surprise and variety. A random palette generator builds a set of colors from a harmony rule so they work together. Use this tool for single picks and the Random Color Palette Generator when you need a matching group.