What is a hex color code?

A hex code is a six-digit hexadecimal number written with a leading hash, like #3A7BD5. The first two digits are the red channel, the next two green, and the last two blue, each ranging from 00 to FF (0 to 255).

How random are the colors?

Each color is a uniformly random integer from 0 to 16,777,215, the full 24-bit color space, formatted as six hex digits. Every one of the roughly 16.7 million possible colors is equally likely.

Why does the text on the swatch change color?

The tool computes the relative luminance of the generated color and uses dark text on light backgrounds and light text on dark backgrounds, so the hex label always stays readable.

Can I generate a specific kind of color?

This tool produces fully random colors across the whole spectrum. If you need control over hue, saturation, or lightness ranges, use the Random RGB Color Generator, which adds constraint sliders.

Is the clipboard copy private?

Yes. Everything runs locally in your browser, so the color and the copied value never leave your device.

Random Hex Color Generator

Sometimes you just need a color, fast — a placeholder, a fresh idea, or random test data. This generator produces a uniformly random hex code on every click and shows it full size so you can judge it immediately.

How it works

A hex color packs three 8-bit channels into one 24-bit value. The generator picks a single random integer in the range 0 to 16,777,215 and formats it as a six-digit hexadecimal string with a leading hash:

value = floor(random() * 16777216)
hex   = "#" + value.toString(16).padStart(6, "0")

Because the integer is uniform across the entire range, every possible color is equally likely. The tool then splits the hex back into red, green, and blue bytes to show the matching rgb() value.

Notes and tips

To keep the displayed code legible on any background, the tool measures the color’s relative luminance using the standard 0.2126R + 0.7152G + 0.0722B weighting (after linearizing each channel) and flips the label between black and white. Random colors are great for breaking creative blocks: generate a few, keep the ones that surprise you, and feed them into the Monochromatic Palette Generator to build a full scale around your favorite.