chroma-js

Chroma.js

Chroma.js is a tiny JavaScript library (12kB) 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?

Please check the most current documentation here:

or here, for the interactive version:

Why not dive into the interactive API docs (there's a static version, too) and download chroma.min.js right away.

You can use it in node.js, too!

npm install chroma-js

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

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.

Known issues

• HSI color conversion is experimental and produces weird results sometimes

Further reading

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

Similar packages

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color

The 'color' package is a JavaScript library for color conversion and manipulation. It supports a wide range of color models and provides methods for color transformations. Compared to chroma-js, it is more focused on color conversions and less on color scales and interpolation.

tinycolor2

TinyColor is a small color manipulation and conversion library. It provides similar functionalities to chroma-js, such as color creation, manipulation, and conversion. However, it is designed to be lightweight and may not have as extensive features for color scales and interpolation as chroma-js.

d3-color

d3-color is part of the D3.js library and provides color manipulation and conversion functionalities. It integrates well with other D3 modules for data visualization. While it offers similar color manipulation features, it is more commonly used within the context of D3 visualizations.