Display ANSI palette in terminal

palette.sh

#!/usr/bin/env bash

NAMES=(Black Red Green Yellow Blue Magenta Cyan White)
CHAR="██  "

for i in {0..7}; do
    CODE=$((i + 30))
    BRIGHT=$((i + 90))

    echo -n -e "${NAMES[$i]}\t"
    # blocks
    # - bright
    echo -n -e "\033[${BRIGHT}m${CHAR}"
    # - normal
    echo -n -e "\033[${CODE}m${CHAR}"
    # - faded
    echo -n -e "\033[$CODE;2m${CHAR}"
    # reset
    echo -e "\033[0m\n"
done