pyDataVizDay/src/static/node_modules/chroma-js

Chroma.js

Chroma.js is a tiny JavaScript library (14kB) for all kinds of color conversions and color scales.

Usage

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

chroma.scale(['white', 'red']).mode('lab');

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');

Like it?

Why not dive into the interactive documentation (there's a static version, too). You can download chroma.min.js or use the hosted version on cdnjs.com.

You can use it in node.js, too!

npm install chroma-js

Or you can use it in SASS using chromatic-sass!

Build instructions

To compile the coffee-script source files you have to run (might have to ``npm install` first)

grunt

To run the tests simply run

npm test

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

• Chromatist
• GrapeFruit (Python)
• colors.py (Python)
• d3.js

Author

Chroma.js is written by Gregor Aisch.

License

Released under BSD license. Versions prior to 0.4 were released under GPL.

Further reading

• How To Avoid Equidistant HSV Colors
• Mastering Multi-hued Color Scales with Chroma.js