About Color Palette Generator – Harmony Schemes & Hex
A color palette generator turns a single base color into a set of colors that look good together. Instead of guessing hex codes, you pick one color you like and a harmony rule — complementary, analogous, triadic, tetradic, monochromatic, or a shade ramp — and get a ready-to-use scheme with copyable hex swatches.
This free color scheme generator is built for designers and developers building UI themes, brand palettes, and data visualizations. It uses classic color harmony math (rotating hue and varying lightness in HSL) so the results are predictable and balanced every time.
Everything runs entirely in your browser — your colors never leave your device, and the tool works fully offline.
Features
- Six harmony schemes: complementary, analogous, triadic, tetradic, monochromatic, and shades
- Native color picker plus hex text input for the base color
- Copyable hex code on every swatch, or copy the whole palette at once
- Deterministic, math-based harmonies — same input always gives the same palette
How to use
- Pick a base color with the swatch picker or type a hex value like #3366CC.
- Choose a harmony scheme from the dropdown.
- Review the generated swatches as they update live.
- Copy any single hex code, or use Copy all to grab the whole palette.
Frequently asked questions
What is a complementary color scheme?
A complementary scheme pairs a base color with the color directly opposite it on the color wheel — a 180° hue rotation. Complementary colors create strong, high-contrast combinations that make each color pop, which is why they work well for accents and calls to action.
What is the difference between analogous and triadic palettes?
Analogous palettes use colors next to each other on the wheel (small ±30° hue offsets), giving a calm, cohesive look. Triadic palettes use three colors evenly spaced 120° apart, giving a vibrant, balanced contrast. Analogous feels harmonious; triadic feels lively.
What is the difference between monochromatic and shades?
Both keep the same hue. Monochromatic varies lightness across a range to produce tints and shades of one color, while the shades scheme darkens the base color step by step toward black. Both are great for building UI scales and depth.
Does this color palette generator send my colors anywhere?
No. All the color math happens locally in your browser, so nothing is uploaded and the tool works offline.
Related tools
Everything runs locally in your browser — your input is never uploaded.