# Copyright © 2024 Noah Vogt <noah@noahvogt.com>

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

VALID_HEX_COLORS = list("0123456789abcdef")


def is_valid_hexcolor(hexcolor: str) -> bool:
    if len(hexcolor) != 6:
        return False

    for char in hexcolor.lower():
        if char not in VALID_HEX_COLORS:
            return False

    return True