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Free · No Signup100% Browser-basedUnlimited

Color Palette Generator

Generate harmonious color palettes online — Random, Monochromatic, Complementary, Analogous, and Triadic. Hex, RGB, and HSL values for each swatch. Lock colors, copy as CSS variables, download PNG. 100% browser-based, free, no signup.

Instant
100% Private
No Limit
Any Device
Click a swatch to copy · Lock to keep
:root {

}

5 Harmony Modes

Random, Monochromatic, Complementary, Analogous, and Triadic. Each is computed from a base hue drawn from the Web Crypto API CSPRNG — high-quality, unpredictable palettes every click.

100% Browser-Based

All color math runs in your browser. No upload, no signup, no server call. Your palettes and your clipboard never leave your device.

Lock Colors

Coolors-style lock: pin a swatch and the rest of the palette regenerates around it. Great for refining a palette while keeping the colors you already love.

Hex · RGB · HSL · PNG

Every swatch shows hex, RGB, and HSL. One click copies a single hex; one click copies the whole palette as CSS variables; one click downloads a PNG strip.

Is this color palette generator free to use?

Yes — 100% free with no signup, no daily limit, and no watermark. Generate as many palettes as you like, on any device. All processing happens in your browser.

What harmony modes are available?

Five: Random (5 fully random colors), Monochromatic (5 shades/tints of one base hue), Complementary (base hue + its opposite), Analogous (3 hues 30° apart + variants), and Triadic (3 hues 120° apart + tints of the base).

How does the lock feature work?

Click the lock icon on any swatch to pin it. When you regenerate (or switch modes), locked colors stay exactly where they are, and the others regenerate around them. Click again to unlock.

How do I export the palette?

Two ways: (1) "Copy All CSS" copies a `:root { --color-1: ...; --color-2: ...; }` block ready to paste into your stylesheet; (2) "Download PNG" exports a 1500×300 image strip of the 5 colors side by side.

Are the colors truly random?

Yes. The base hue and saturation seed come from `crypto.getRandomValues`, the same cryptographic RNG browsers use for TLS. This gives genuinely unpredictable, high-quality palettes — not the streaky output of `Math.random()`.

Ready to use the Color Palette Generator?

Free, no signup, no watermark. 100% browser-based. Your data never leaves your device.

Open the tool