Find closest color in xterm-256color to solarized colors

closest.py

import yaml
from colormath.color_objects import sRGBColor, LabColor
from colormath.color_conversions import convert_color
from colormath.color_diff import delta_e_cie2000
import numpy

def patch_asscalar(a):
    return a.item()

setattr(numpy, "asscalar", patch_asscalar)

def load_xterm_palette(yaml_path):
    with open(yaml_path, 'r') as f:
        data = yaml.safe_load(f)

    palette = []
    for section in (':xterm16', ':xtermGreyscale', ':xterm256'):
        for idx_str, hex_code in data.get(section, []):
            palette.append((int(idx_str), hex_code.lower()))
    return palette

def closest_xterm_index(target_hex, palette):
    target_rgb = sRGBColor.new_from_rgb_hex(target_hex)
    target_lab = convert_color(target_rgb, LabColor)

    min_dist = float('inf')
    best_match = None

    for index, hex_code in palette:
        rgb = sRGBColor.new_from_rgb_hex(hex_code)
        lab = convert_color(rgb, LabColor)
        dist = delta_e_cie2000(target_lab, lab)
        if dist < min_dist:
            min_dist = dist
            best_match = (index, hex_code)
    return best_match

palette = load_xterm_palette("xterm-256color.yaml")

base03="#002b36"
base02="#073642"
base01="#586e75"
base00="#657b83"
base0="#839496"
base1="#93a1a1"
base2="#eee8d5"
base3="#fdf6e3"
yellow="#b58900"
orange="#cb4b16"
red="#dc322f"
magenta="#d33682"
violet="#6c71c4"
blue="#268bd2"
cyan="#2aa198"
green="#859900"

# matches_to_find = [base01, base00, base0, violet, base1, base03]
matches_to_find = [base01, base02, base00, base0, base1, violet]
for color in matches_to_find:
    match = closest_xterm_index(color, palette)
    print(match)