Overview
Choosing colours one by one is how palettes go wrong: each pick is fine alone, and together they argue. Colour harmony rules fix this by deriving companions from relationships on the colour wheel rather than from taste. Pick a base you love, choose a rule, and get five colours that were designed — mathematically — to coexist.
This generator implements the classic harmonies: analogous neighbours for calm schemes, complementary opposites for energy, triadic trios for vibrancy, and more. Click any swatch to copy its HEX, nudge the base to explore, and let the wheel do the arguing for you.
What are colour harmony rules?
The colour wheel organises hues by their relationships: neighbours blend, opposites contrast, trios vibrate. Harmony rules are simply named slices of this geometry. Analogous takes colours beside your base — safe, serene, found all over nature. Complementary takes the colour directly opposite — maximum tension, which is why it shouts. Triadic takes three evenly spaced hues — balanced yet lively.
These are not laws of beauty but starting positions with centuries of evidence. Painters, printers and interface designers all converged on the same wheel because human vision responds to these relationships predictably. The generator does the geometry; your eye does the judging.
Features
- Harmony rules — analogous, complementary, triadic and more, computed from colour-wheel math.
- Base colour control — pick visually or type a HEX code; everything rebuilds instantly.
- Five-colour palettes — the working standard for real interfaces.
- Click-to-copy HEX — tap any swatch and the code is on your clipboard.
- Live regeneration — nudge the base and watch the family follow.
- Colour-wheel honest — relationships, not random pretty colours.
- Fully local — every calculation happens on your device.
Benefits
- Skip the blank canvas. One colour you like becomes five that work.
- Learn the rules by seeing them. Each harmony is a mini-lesson in colour theory.
- Copy in one click. HEX codes go straight to your stylesheet.
- Private exploration. Client directions stay on your device.
Who can use it
Web and UI designers building schemes, developers who need “ a palette that does not clash” without a design degree, brand builders exploring directions, slide-makers and bloggers dressing up content, and students learning colour theory by doing. Anyone staring at a blank stylesheet wondering which colours go together should start here.
How to use
- Pick a base colour you like with the picker, or type its HEX code.
- Choose a harmony rule — start with analogous for safety, complementary for energy.
- Review the five-colour palette it builds.
- Click any swatch to copy its HEX code.
- Nudge the base colour and watch the whole family update live.
Frequently asked questions
Which harmony rule should I pick?
Analogous (neighbours on the wheel) is the safest: harmonious, calm, hard to get wrong. Complementary (opposites) brings energy and contrast — great for accents, risky for large areas. Triadic (three evenly spaced) is vibrant but demanding; use one as dominant and the others sparingly. When in doubt, analogous with one complementary accent is the designer's default.
Can I trust the harmony rules blindly?
Rules propose; eyes dispose. Harmony math guarantees relationships, not taste — a technically complementary pair can still clash in context, at the wrong lightness, or next to your content. Generate, then judge in situ: squint at it, check it against real text, and trust the wince.
How do I build a palette around my brand colour?
Lock your brand colour as the base and generate around it — analogous variations give you a family that always matches. For a full palette, generate a complementary or triadic set, then mute the companions (lower saturation) so the brand colour stays dominant.
Why five colours?
Five is the working standard: a dominant, a secondary, an accent, and two neutrals (or light/dark variants). Fewer feels thin across a real interface; more becomes unmanageable. The generator's five-hit structure mirrors how design systems actually get built.
My palette looks good here but bad on my site — why?
Context changes everything: surrounding colours, lighting in photos, and the proportions you use all shift perception. A palette is a starting kit, not a finished design. Apply it at real sizes, check text contrast with the checker on this site, and be ready to mute or deepen individual colours once they meet your actual content.
Should I use the same palette for print and web?
Not blindly. Screens emit light (RGB) while print reflects it (CMYK), and the translation shifts vivid colours noticeably. Use the HEX values here for digital work; for print, convert through your design tool's CMYK preview and proof on paper before committing to a large run.
Conclusion
Good palettes are relationships, not collections. Start from a colour you trust, let the harmony rules propose its companions, and copy the HEX codes that survive your eye test — five colours, zero guesswork.