HueVaultKit

Pick a colour. Get a palette that actually works.

HueVaultKit turns any seed tone into a balanced set of colours using eight classic harmony rules, then keeps every set you like in a searchable vault on your device. No account, no sign-up, no internet connection required — ever.

THE STUDIO
Drag the painted colour wheel to choose a seed tone, or hit Surprise me for a fresh one. Pick a harmony rule and the palette rebuilds instantly:

• Analogous — neighbouring hues, calm and cohesive
• Complementary — opposite hues, maximum contrast
• Split — softer opposition, still punchy
• Triadic — three evenly spaced hues
• Tetradic — two complementary pairs
• Monochrome — one hue, many lightness steps
• Shades — a deep-to-light ramp of a single tone
• Vivid — a golden-angle walk, surprising but ordered

Lock the tones you want to keep and re-roll the rest until the set sings. Choose anywhere from three to eight tones. Tap a tone to copy it; press and hold to open the tuner and adjust hue, saturation and lightness by hand — or paste a hex value straight in.

THE VAULT
Save a palette with a name and your own tags, then find it again by name, tag, harmony rule or even a hex value. Star the ones you keep coming back to, sort by newest, oldest, name or starred, and swipe to delete. Eighteen curated starter palettes are included, so the vault is useful from the very first launch.

CONTRAST THAT PASSES REVIEW
Every palette shows the WCAG contrast of each tone against white and black. The built-in contrast checker takes any two colours — typed in, tuned by hand, or pulled straight from a saved palette — and tells you exactly which text sizes pass: body AA, body AAA, large text, and UI components. Preview real sample text on the real background before you commit.

EXPORT ANYWHERE
Copy any tone as HEX, RGB or HSL. Copy a whole palette as a hex list, CSS custom properties, JSON, or a readable summary — then paste it into your design file, stylesheet or ticket.

INSIGHTS
See what your archive is actually made of: the hue mix across every tone you have stored, palettes saved over the last week, your most-used harmony rule, and your daily streak. Ten merits track real milestones — first save, ten saved, every harmony rule used, ten contrast checks, a week-long streak.

COMPLETELY OFFLINE
No accounts. No analytics. No ads. No tracking. No servers. Your palettes are stored in a local database on your device and are never uploaded anywhere. Uninstalling removes them completely.

Built for designers, developers, illustrators and anyone who has ever stared at a hex code wondering what goes next to it.