[Python] Create a list of hex codes given an Rgb range

I have these 3 vertices (end values) of RGB as #ff0000, #ffcfcf and #350000 where R varies from 35 to ff , G from 00 to cf and B from 00 to cf. I need to create a list of all the possible values between them. I did the following:

import re
my_list=[]
for i in xrange(53,256):
for j in xrange(0,208):
for k in xrange(0,208):
item = str(hex(i))+str(hex(j))+str(hex(k))
item2 = re.sub('(0x)','',item)
my_list.append(item2)


I iterated over the integer values and converted them to hex, followed by concatenating RGB values and replacing 0x from the concatenated string(which doesn't work) . This method is quite slow. Is there a better way to do this?

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