Table of Contents

BASH - Colors - 3 and 4-bit Colors

BASH - Colors - 3 and 4-bit Colors

8 Colors.

Format

ESC[ 0;⟨n⟩ m Select normal color
ESC[ 1;⟨n⟩ m Select bright color

where n is:

30 is BLACK.
31 is RED.
32 is GREEN.
33 is YELLOW.
34 is BLUE.
35 is MAGENTA.
36 is CYAN.
37 is WHITE.

90 is BRIGHT BLACK (GRAY).
91 is BRIGHT RED.
92 is BRIGHT GREEN.
93 is BRIGHT YELLOW.
94 is BRIGHT BLUE.
95 is BRIGHT MAGENTA.
96 is BRIGHT CYAN.
37 is BRIGHT WHITE.

Red Example

echo -e "\033[0;31mThis is in RED"

NOTE: This is made up of:

\033 - Represents the ESC key.
[0; - Normal color.
[31m] - Red; from color table.

Bright Red Example

echo -e "\033[1;31mThis is in BRIGHT RED"

NOTE: This is made up of:

\033 - Represents the ESC key.
[1; - Bright color.
[31m] - Red; from color table. Notice this is NOT using the bright numbers from the color table.

Bright colors can be used simply by using a 1 after the ESC instead of a 0.

Some older systems may not support this, so in this case use the alternative number from the color table;

echo -e "\033[0;91mThis is in BRIGHT RED"

Here the 31m has been changed to 91m.

Red Blue

echo -e "\033[0;31mThis is in RED\033[0;34mThis is in Blue"

ANSI Rainbow

for (( i = 30; i < 38; i++ )); do echo -e "\033[0;"$i"m Normal: (0;$i); \033[1;"$i"m Bright: (1;$i)"; done