Converting Hex to RGB value in Python

Working off Jeremy's response here: Converting hex color to RGB and vice-versa I was able to get a python program to convert preset colour hex codes (example #B4FBB8), however from an end-user perspective we can't ask people to edit code & run from there. How can one prompt the user to enter a hex value and then have it spit out a RGB value from there?

Here's the code I have thus far:

def hex_to_rgb(value):
    value = value.lstrip('#')
    lv = len(value)
    return tuple(int(value[i:i + lv // 3], 16) for i in range(0, lv, lv // 3))


def rgb_to_hex(rgb):
    return '#%02x%02x%02x' % rgb

hex_to_rgb("#ffffff")              # ==> (255, 255, 255)
hex_to_rgb("#ffffffffffff")        # ==> (65535, 65535, 65535)
rgb_to_hex((255, 255, 255))        # ==> '#ffffff'
rgb_to_hex((65535, 65535, 65535))  # ==> '#ffffffffffff'

print('Please enter your colour hex')

hex == input("")

print('Calculating...')
print(hex_to_rgb(hex()))

Using the line print(hex_to_rgb('#B4FBB8')) I'm able to get it to spit out the correct RGB value which is (180, 251, 184)

It's probably super simple - I'm still pretty rough with Python.

I believe that this does what you are looking for:

h = input('Enter hex: ').lstrip('#')
print('RGB =', tuple(int(h[i:i+2], 16) for i in (0, 2, 4)))

(The above was written for Python 3)

Sample run:

Enter hex: #B4FBB8
RGB = (180, 251, 184)

Writing to a file

To write to a file with handle fhandle while preserving the formatting:

fhandle.write('RGB = {}'.format( tuple(int(h[i:i+2], 16) for i in (0, 2, 4)) ))

You can use ImageColor from Pillow.

>>> from PIL import ImageColor
>>> ImageColor.getcolor("#23a9dd", "RGB")
(35, 169, 221)

Just another option: matplotlib.colors module.

Quite simple:

>>> import matplotlib.colors
>>> matplotlib.colors.to_rgb('#B4FBB8')
(0.7058823529411765, 0.984313725490196, 0.7215686274509804)

Note that the input of to_rgb need not to be hexadecimal color format, it admits several color formats.

You can also use the deprecated hex2color

>>> matplotlib.colors.hex2color('#B4FBB8')
(0.7058823529411765, 0.984313725490196, 0.7215686274509804)

The bonus is that we have the inverse function, to_hex and few extra functions such as, rgb_to_hsv.