Color Palette Generator — Harmonies from One Color

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One seed color → four ready-made palettes: complementary, analogous, triadic and monochrome.

Base color

Or HEX

How to use this tool

1. Pick or type your base color — usually your brand's main color.
2. Four palettes appear: complementary, analogous, triadic and monochrome.
3. Click any swatch to copy its HEX code — mix palettes freely; they all share your base's DNA.

Example

Seed #1d7d78 (island teal): complementary brings a soft coral (hue 357°) — teal-and-coral is exactly the atoll's own pairing, generated by the wheel, not by accident.

The formula

complementary = hue + 180° · analogous = ±30° · triadic = ±120° · monochrome = same hue, stepped lightness

What the result means

These four harmonies are the classical geometry of the color wheel: opposites for energy, neighbours for calm, triangles for playful balance, and a single hue stepped through lightness for elegance. When a palette feels 'off', it is usually fighting the geometry.

Frequently asked questions

Which harmony should I choose?

Monochrome for professional and minimal work; analogous for calm, natural schemes; complementary when something must pop (a button on a brand background); triadic for playful, balanced brands.

Can I combine palettes?

Yes — a common recipe: analogous background tones + one complementary accent. The 60-30-10 rule (dominant, secondary, accent) fits any of these sets.

Why does the tool change lightness in some swatches?

Extreme lightness values (near 0 or 100) hide the hue entirely; the generator nudges toward readable mid-tones so every swatch stays usable.

Are the HEX codes copied anywhere?

No — generation and copying happen in your browser.

More tools from Palette Atoll

Color PickerHEX, RGB & HSL togetherGradient GeneratorCSS gradients liveContrast CheckerReadable color pairsHEX ↔ RGB ConverterConvert any color code

Explore the island world

• Palette Atoll — the island where this tool lives.
• The Main Island — drive the boat, explore the whole world.
• The 90s Kids Island — where most of us started.

Privacy & data: this tool runs entirely in your browser — nothing you type is uploaded, saved or sent anywhere. · Disclaimer: color values are computed with standard formulas; final appearance always depends on the display and medium. · Privacy Policy · Disclaimer