Convert an 888 RGB value to 565 hex

colour_converter.py

#   Author: Andrew Fisher
#   Version: 0.1
#   Date: 30/05/2012
#   Licence: BSD

#   This python converts an rgb value expressed in 8 bit values (eg 255, 128, 0) and returns a hex value that
#   has been converted to 565 format. This was highly useful when I was playing with some Arduino
#   stuff requiring 16 bit LCD designs and couldn't remember the hex layout. 

def rgb_hex565(red, green, blue):
    # take in the red, green and blue values (0-255) as 8 bit values and then combine
    # and shift them to make them a 16 bit hex value in 565 format. 
    print ("0x%0.4X" % ((int(red / 255 * 31) << 11) | (int(green / 255 * 63) << 5) | (int(blue / 255 * 31))))