#!/bin/sh
# https://stackoverflow.com/questions/7253235/convert-hexadecimal-color-to-decimal-rgb-values-in-unix-shell-script/7253786#7253786
hexinput="$(echo $1 | tr '[:lower:]' '[:upper:]')"  # uppercase-ing
a=`echo $hexinput | cut -c-2`
b=`echo $hexinput | cut -c3-4`
c=`echo $hexinput | cut -c5-6`

r=`echo "ibase=16; $a" | bc`
g=`echo "ibase=16; $b" | bc`
b=`echo "ibase=16; $c" | bc`

echo $r $g $b
exit 0