python color functions

color functions.py

import math

# Function to Parse Hexadecimal Value
def parse_hex_color(string):
    if string.startswith("#"):
        string = string[1:]
        
    r = int(string[0:2], 16) # red color value
    g = int(string[2:4], 16) # green color value
    b = int(string[4:6], 16) # blue color value
    
    return r, g, b, 255

# Calculate distance btw two color
def color_similarity(base_col_val,oth_col_val):
    return math.sqrt(sum((base_col_val[i]-oth_col_val[i])**2 for i in range(3)))

base_color = "#ff0000"
color_list = ["#467829", "#4587ab", "#1628cd", "#278bad"]

# Max intial value
r = 1000

# Code for finding out minimum distance
for x in color_list:
    if color_similarity(parse_hex_color(base_color),parse_hex_color(x))<r:
        r,rs=color_similarity(parse_hex_color(base_color),parse_hex_color(x)),x
        
print("Most similar color inside the list is  ", rs)