ColorBox

A web tool for building accessible color scales from adjustable hue, saturation and brightness curves.

FreeProprietaryWeb

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About ColorBox

ColorBox generates color scales for design systems by letting you set start and end values and easing curves for hue, saturation and brightness, with HSV and OKLCH modes. Each step shows its contrast ratio against white and black, so you can see where text becomes legible.

Scales can be exported as Tailwind CSS, OKLCH or Swift code, copied as a JSON config, shared by URL or used through a Figma plugin. It suits designers who want precise, repeatable control over a palette.

Strengths

  • Fine control over each channel with easing curves
  • Shows contrast ratios for every step
  • Exports to Tailwind CSS, OKLCH and Swift

Limitations

  • Curve-based controls take some learning
  • Aimed at systematic scales rather than quick inspiration

Details

Pricing
FreeFree to use in the browser; no paid tier is shown on the page.
License
Proprietary
Developer
Kevyn
Platforms
Web
How it runs
Web application
Account
Not required
Best suited for
Designers building color scales for a design system
Categories
Color tools
Last verified
Added
Provenance
Facts checked against the developer's own pages and store listings, 1 sources on file.

Alternatives to ColorBox

Compare all

Software that can replace ColorBox for an important use case, and what changes if you switch.

  • Leonardo

    Adobe's web tool for generating accessible color themes and scales from target contrast ratios.

    Leonardo is open source and builds scales from target contrast ratios, with adaptive dark mode themes and exports to CSS, Design Tokens and SVG.

  • Geenes

    A browser tool for building color scales and exporting them to Sketch or code.

    FreeProprietaryWeb

    Geenes also builds scales from hue and saturation curves but exports only to Sketch or code and has little public documentation.

  • Huetone

    An open-source web tool for building predictable, accessible color palettes in the LCH color space.

    Huetone is open source and builds accessible palettes in the LCH color space, keeping lightness consistent across hues.

  • Accessible Palette

    A web tool for building color systems with consistent lightness and WCAG contrast across hues.

    FreeProprietaryWeb

    Accessible Palette keeps perceived lightness consistent across hues and shows WCAG 2 and 3 contrast, but its export options are not described.

  • Scale

    A web tool that generates a smooth color scale from a single base color.

    FreeProprietaryWeb

    Scale generates a tint and shade scale from one base color with hue and saturation curves, but offers little documentation and no stated contrast display.

  • tints.dev

    A web palette generator and API that builds 11-shade Tailwind CSS color scales from one base color.

    FreeProprietaryWeb

    tints.dev builds 11-shade Tailwind scales from one base color with an API and shareable URLs, with less fine channel control than easing curves.

  • UI Colors

    A web tool that generates Tailwind CSS color shade scales from a base color and previews them.

    FreemiumProprietaryWeb

    UI Colors generates Tailwind shade scales previewed on shadcn/ui components and adds neutral and status scales, with some features requiring Pro.

  • Atmos

    A web-based color palette generator for UI designers, with shade scales and accessibility checks.

    FreemiumProprietaryWeb

    Atmos generates uniform shade scales plus semantic status colors and harmony modes, and is freemium with some features possibly needing an account.

ColorBox as an alternative

Listings that name ColorBox as an alternative.

  • Palettte App

    A web app for creating, editing and remapping color palettes with hue, saturation and value controls.

    FreeProprietaryWeb

    ColorBox controls each channel with easing curves to build systematic scales with contrast ratios and Tailwind, OKLCH and Swift export.

Similar software

Related functionality, not necessarily a direct replacement.

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