angular-color-interpolator

Angular provider for color interpolation.

Inspiration

The primary reason this was needed was to use database-driven branding colors for an angular application. When customizing angular-material's themes, it became apparent that storing a bunch of colors wasn't necessarily ideal.

Instead, we store a single color in the database and create a custom theme by running:

generateTheme = function(base) {
  return {
    '50'  : $colorInterpolator.lighten(base, 0.5),
    '100' : $colorInterpolator.lighten(base, 0.4),
    '200' : $colorInterpolator.lighten(base, 0.3),
    '300' : $colorInterpolator.lighten(base, 0.2),
    '400' : $colorInterpolator.lighten(base, 0.1),
    '500' : base,
    '600' : $colorInterpolator.darken(base, 0.1),
    '700' : $colorInterpolator.darken(base, 0.2),
    '800' : $colorInterpolator.darken(base, 0.3),
    '900' : $colorInterpolator.darken(base, 0.4),
    'A100': $colorInterpolator.lighten(base, 0.3),
    'A200': $colorInterpolator.lighten(base, 0.15),
    'A400': $colorInterpolator.darken(base, 0.15),
    'A700': $colorInterpolator.darken(base, 0.3),
    'contrastDefaultColor': 'light',
    'contrastDarkColors': ['50', '100', '200', '300', '400', 'A100'],
    'contrastLightColors': ['900', '800', '700', '600', '500', 'A700']
  }
}

Installation

Install with the cli

bower install angular-color-interpolator
  -- or --
npm install angular-color-interpolator

Import in the html

<script src="/bower_components/angular-color-interpolator/release/angular-color-interpolator.min.js"></script>

Add as a module of your Angular.JS app

angular.module('my.app', ['ngColorInterpolator']);

Usage

• lighten(color, factor) - color being a hex or rgb color, factory being 0.1 for 10%, 0.2 for 20%, and so on. Will lighten the color by that factor.
• darken(color, factor) - inverse of lighten
• blend(color1, color2, factor) - given two colors, blend the colors together using the given factor to determine how to weight each color.

Contributions

• Fork the project, make changes, and submit a PR. I will bundle the release together and push out the new version.

Build for release

Bump up the version and run:

$ grunt

Commit the new version and run git tag [version] and git push origin --tags.