Tk color, RGB and HEXCODE converter

colorchooser.py

"""https://stackoverflow.com/questions/57651030/take-hex-code-rgb-and-d\
isplay-the-color-in-tkinter"""

import tkinter as tk
from tkinter import *

color_list = [
    ('black', (0, 0, 0)),
    ('blue', (0, 0, 255)),
    ('red', (255, 0, 0)),
    ('green', (0, 0, 255)),
    ('yellow', (255, 255, 0)),
    ('white', (255, 255, 255)),
]

hex_list = [f"{n:02X}" for n in range(256)]

def name_to_hex_rgb(event):
    try:
        color = color_list[name_listbox.curselection()[0]]
    except IndexError:
        color = color_list[0]
    color_name = color[0]
    color_rgb = color[1]
    color_hex = f"#{''.join([f'{rgb:02X}' for rgb in color_rgb])}"
    color_inverse = f"""#{''.join([f'{rgb:02X}' for rgb in 
        [255 - color for color in color_rgb]])}"""
    name_label.config(
        bg = color_hex,
        fg = color_inverse,
        text = f"""name: {color_name}\nhex: {color_hex}\nrgb: \
{color_rgb}""",
    )

def hex_to_rgb(event):
    try:
        color_1 = hex_listbox_1.curselection()[0]
    except IndexError:
        color_1 = 0
    try:
        color_2 = hex_listbox_2.curselection()[0]
    except IndexError:
        color_2 = 0
    try:
        color_3 = hex_listbox_3.curselection()[0]
    except IndexError:
        color_3 = 0
    color_rgb = (
        int(hex_list[color_1], 16),
        int(hex_list[color_2], 16),
        int(hex_list[color_3], 16),
    )
    color_rgb_inverse = (
        255 - int(hex_list[color_1], 16),
        255 - int(hex_list[color_2], 16),
        255 - int(hex_list[color_3], 16),
    )
    color_hex = f"""#{hex_list[color_1]}\
{hex_list[color_2]}\
{hex_list[color_3]}"""
    color_hex_inverse = f"""#{hex_list[255 - color_1]}\
{hex_list[255 - color_2]}\
{hex_list[255 - color_3]}"""
    text = f"rgb: {color_rgb}"
    color_name = [color[0] for color in color_list if color[1] == \
        color_rgb]
    if len(color_name) > 0:
        text = f"name: {color_name[0]}\n" + text
    hex_label.config(bg = color_hex, fg = color_hex_inverse,
        text = text)

def rgb_to_hex(event):
    try:
        color_1 = rgb_listbox_1.curselection()[0]
    except IndexError:
        color_1 = 0
    try:
        color_2 = rgb_listbox_2.curselection()[0]
    except IndexError:
        color_2 = 0
    try:
        color_3 = rgb_listbox_3.curselection()[0]
    except IndexError:
        color_3 = 0
    color_rgb = (color_1, color_2, color_3)
    color_rgb_inverse = (255 - color_1, 255 - color_2, 255 - color_3)
    color_hex = f"#{color_1:02X}{color_2:02X}{color_3:02X}"
    color_hex_inverse = f"""#{255 - color_1:02X}{255 - color_2:02X}\
{255 - color_3:02X}"""
    text = f"hex: {color_hex}"
    color_name = [color[0] for color in color_list if color[1] == \
        color_rgb]
    if len(color_name) > 0:
        text = f"name: {color_name[0]}\n" + text
    rgb_label.config(bg = color_hex, fg = color_hex_inverse,
        text = text)

root = tk.Tk()
root.title("Color, RGB and Hex Converter")

name_frame = Frame(root)
name_frame.pack(anchor = "nw", fill = BOTH, side = "left")

name_label = Label(name_frame, text = " ")
name_label.pack(anchor = "center")

name_title = Label(name_frame, text = "NAME to HEX & RGB")
name_title.pack(anchor = "center")

name_listbox = Listbox(
    name_frame,
    listvariable = Variable(value = [color[0] for color in color_list]),
    justify = "center",
    width = 18,
)
name_listbox.bind("<<ListboxSelect>>", name_to_hex_rgb)
name_listbox.pack()

hex_frame = Frame(root)
hex_frame.pack(anchor = "n", fill = BOTH, side = "left")

hex_label = Label(hex_frame, text = "")
hex_label.pack(anchor = "center")

hex_title = Label(hex_frame, text = "HEX to RGB")
hex_title.pack(anchor = "center")

hex_listbox_1 = Listbox(
    hex_frame,
    listvariable = Variable(value = hex_list),
    exportselection = False,
    justify = "center",
    width = 6,
)
hex_listbox_1.bind("<<ListboxSelect>>", hex_to_rgb)
hex_listbox_1.pack(anchor = "nw", fill = BOTH, side = "left")

hex_listbox_2 = Listbox(
    hex_frame,
    listvariable = Variable(value = hex_list),
    exportselection = False,
    justify = "center",
    width = 6,
)
hex_listbox_2.bind("<<ListboxSelect>>", hex_to_rgb)
hex_listbox_2.pack(anchor = "n", fill = BOTH, side = "left")

hex_listbox_3 = Listbox(
    hex_frame,
    listvariable = Variable(value = hex_list),
    exportselection = False,
    justify = "center",
    width = 6,
)
hex_listbox_3.bind("<<ListboxSelect>>", hex_to_rgb)
hex_listbox_3.pack(anchor = "ne", fill = BOTH, side = "left")

rgb_frame = Frame(root)
rgb_frame.pack(anchor = "ne", fill = BOTH, side = "left")

rgb_label = Label(rgb_frame, text = "")
rgb_label.pack(anchor = "center")

rgb_title = Label(rgb_frame, text = "RGB to HEX")
rgb_title.pack(anchor = "center")

rgb_listbox_1 = Listbox(
    rgb_frame,
    listvariable = Variable(value = list(range(256))),
    exportselection = False,
    justify = "center",
    width = 6,
)
rgb_listbox_1.bind("<<ListboxSelect>>", rgb_to_hex)
rgb_listbox_1.pack(anchor = "nw", fill = BOTH, side = "left")

rgb_listbox_2 = Listbox(
    rgb_frame,
    listvariable = Variable(value = list(range(256))),
    exportselection = False,
    justify = "center",
    width = 6,
)
rgb_listbox_2.bind("<<ListboxSelect>>", rgb_to_hex)
rgb_listbox_2.pack(anchor = "n", fill = BOTH, side = "left")

rgb_listbox_3 = Listbox(
    rgb_frame,
    listvariable = Variable(value = list(range(256))),
    exportselection = False,
    justify = "center",
    width = 6,
)
rgb_listbox_3.bind("<<ListboxSelect>>", rgb_to_hex)
rgb_listbox_3.pack(anchor = "ne", fill = BOTH, side = "left")

name_to_hex_rgb(None)
hex_to_rgb(None)
rgb_to_hex(None)

root.mainloop()