Below you can find colors reference of text to command when running node.js application:

console.log('\x1b[36m%s\x1b[0m', 'I am cyan');  //cyanconsole.log('\x1b[33m%s\x1b[0m', stringToMakeYellow);  //yellow

Note %s is where in the string (the second argument) gets injected. \x1b[0m resets the terminal color so it doesn't continue to be the chosen color anymore after this point.

Colors reference

Reset = "\x1b[0m"Bright = "\x1b[1m"Dim = "\x1b[2m"Underscore = "\x1b[4m"Blink = "\x1b[5m"Reverse = "\x1b[7m"Hidden = "\x1b[8m"FgBlack = "\x1b[30m"FgRed = "\x1b[31m"FgGreen = "\x1b[32m"FgYellow = "\x1b[33m"FgBlue = "\x1b[34m"FgMagenta = "\x1b[35m"FgCyan = "\x1b[36m"FgWhite = "\x1b[37m"BgBlack = "\x1b[40m"BgRed = "\x1b[41m"BgGreen = "\x1b[42m"BgYellow = "\x1b[43m"BgBlue = "\x1b[44m"BgMagenta = "\x1b[45m"BgCyan = "\x1b[46m"BgWhite = "\x1b[47m"

EDIT:

For example, \x1b[31m is an escape sequence that will be intercepted by your terminal and instructs it to switch to the red color. In fact, \x1b is the code for the non-printable control character escape. Escape sequences dealing only with colors and styles are also known as ANSI escape code and are standardized, so therefore they (should) work on any platform.

Wikipedia has a nice comparison of how different terminals display colors https://en.wikipedia.org/wiki/ANSI_escape_code#Colors

There are multiple packages available for formatting console text in Node.js. The most popular are:

• chalk 15k stars
• colors 2.9k stars
• cli-color 500 stars

Usage:

CHALK:

const chalk = require('chalk');console.log(chalk.red('Text in red'));

COLORS:

const colors = require('colors');console.log('Text in red'.red);

CLI-COLOR:

const clc = require('cli-color');console.log(clc.red('Text in red'));

Many people have noted their disapproval of colors altering the String prototype. If you prefer your prototypes to be left alone, use the following code instead:

const colors = require('colors/safe');console.log(colors.red('Text in red'));

If you want to change the colors directly yourself without a module try

console.log('\x1b[36m', 'sometext' ,'\x1b[0m');

First \x1b[36m to change the colors to 36 and then back to terminal color 0.

Here's a list of ANSI color codes