image-average-color
A simple library that calculates the average color of a PNG, JPG or GIF image.
The only exported function takes two arguments: first is either Buffer with image contents or a filename, second one is a callback. Callback function should accept a possible error and a color in form of array of four values in range 0...255 representing red, green, blue and alpha channels.
const average = ; ; ;
This package also provides a command-line utility called average-color
that accepts
a filename and prints the average color in CSS format:
$ average-color image.jpg
rgba(86, 219, 101, 1)