Initiate and manipulate colors:
chroma('#D4F880').darken().hex(); // #9BC04B
Working with color scales is easy, too:
scale = chroma.scale(['white', 'red']); scale(0.5).hex(); // #FF7F7F
Lab/Lch interpolation looks better than RGB
Custom domains! Quantiles! Color Brewer!!
chroma.scale('RdYlBu').domain(myValues, 7, 'quantiles');
And why not use logarithmic color scales once in your life?
chroma.scale(['lightyellow', 'navy']).domain([1, 100000], 7, 'log');
You can use it in node.js, too!
npm install chroma-js
Or you can use it in SASS using chromatic-sass!
To compile the coffee-script source files you have to run (might have to
npm install first)
To run the tests simply run
And to update the documentation (thanks!), just do
npm install --global markdown-to-html http-server cd docs/ make && make preview
Similar Libraries / Prior Art
Chroma.js is written by Gregor Aisch.
There have been no commits in X weeks. Is chroma.js dead?
No! It's just that the author of this library has other things to do than devoting every week of his life to making cosmetic changes to a piece of software that is working just fine as it is, just so that people like you don't feel like it's abandoned and left alone in this world to die. Bugs will be fixed. Some new things will come at some point. Patience.