Working Ninja
Hex to RGB HTML Color Converter
import sys

    hex_val = str(sys.argv[1])
except Exception as e:
    sys.exit('Please provide a hex code as an argument (e.g. hex2rgb 333333).')

r = int(hex_val[0:2], 16)
g = int(hex_val[2:4], 16)
b = int(hex_val[4:6], 16)

print('{}, {}, {}'.format(r, g, b))

Append your ~/.bash_aliases with:

alias hex2rgb="~/bin/"

Load the new alias:

$ source ~/.bash_aliases

Now we're able to convert Hex to RGB from the command line:

$ hex2rgb e1e1e1
255, 255, 255