Change hex or rgb color to xterm (8-bit) color.

Change hex or rgb color to xterm colors (one of the 256 basic 8-bit colors). Code is based on Python colortrans.py script by Micah Elliott.

This library has only two methods:

• hex2xterm(hex_color): convert given hex color (with or without # sign) to the xterm color. If there is no exact match, search for the closest one.
• rgb2xterm(r, g, b): convert given rgb color (passed tot he method as 3 separate parameters) to the xterm color. If there is no exact match, search for the closest one.

Install simply with:

npm install color2xterm

Then in your code:

var c2xterm = require('color2xterm');

c2xterm.hex2xterm('#ffffff'); // result: 15
c2xterm.rgb2xterm(255, 255, 255); // result: 15

// Find closest color:
c2xterm.hex2xterm('#0DADD6'); // closest color is #00AFD7 so the result is 38

stolen from Wikimedia