What do the pastel, vivid and muted presets change?

They restrict the saturation and lightness ranges that colors are sampled from. Hue stays unrestricted, which is why a preset set feels coherent even though the hues are unrelated.

Will regenerating give me a color I already locked?

No. Locked colors are held aside and excluded from new draws, so regeneration produces distinct values.

Are random colors a good basis for a brand palette?

They are a good way to find a starting color. Once one appeals to you, a harmony generator or shade scale will build a structured set around it.

Random Color Generator

Number of colors

Color character

5 colors

Color 1

#167d8d

Color 2

#ee8756

Color 3

#d8df81

Color 4

#4b526b

Color 5

#d68eb4

Export palette

Palette output

:root {
    --color-1: #167d8d;
    --color-2: #ee8756;
    --color-3: #d8df81;
    --color-4: #4b526b;
    --color-5: #d68eb4;
}

Lock what works, reroll the rest

Randomness is useful for breaking out of habitual color choices, but a fully random set is rarely usable as-is. Locking keeps the swatches you like in place while everything else regenerates, so you can converge on a palette across several passes instead of hoping one roll produces all of it.

Locked colors are also excluded from being generated again, so a regeneration will not hand you a near-duplicate of a swatch you already kept.

What the presets constrain

The default preset samples the full sRGB cube, which produces the widest variety and the most unusable colors. The three constrained presets sample bounded ranges of saturation and lightness instead: pastel stays light and gently saturated, vivid stays bright and strongly saturated, and muted keeps saturation low across a mid-tone range.

A constrained preset makes a set that hangs together more readily, because the generated colors already share a lightness and saturation character even though their hues are unrelated.

Where the randomness comes from

Colors are drawn from the browser's cryptographic random source rather than a seeded generator, so results are not reproducible and the same settings will not return the same palette twice. Share links carry the specific colors on screen, not a seed.

Random hues carry no relationship to one another. If you need a structured set, start from one color you like and use a harmony generator or a shade scale instead.

Frequently asked questions

Only through its share link, which stores the actual colors. Generation uses a cryptographic random source rather than a seed, so the same settings will not reproduce a previous set.