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[EDIT] FILE: color_triplet.py

from typing import NamedTuple, Tuple

class ColorTriplet(NamedTuple):
    """The red, green, and blue components of a color."""

red: int
    """Red component in 0 to 255 range."""
    green: int
    """Green component in 0 to 255 range."""
    blue: int
    """Blue component in 0 to 255 range."""

@property
    def hex(self) -> str:
        """get the color triplet in CSS style."""
        red, green, blue = self
        return f"#{red:02x}{green:02x}{blue:02x}"

@property
    def rgb(self) -> str:
        """The color in RGB format.

Returns:
            str: An rgb color, e.g. ``"rgb(100,23,255)"``.
        """
        red, green, blue = self
        return f"rgb({red},{green},{blue})"

@property
    def normalized(self) -> Tuple[float, float, float]:
        """Convert components into floats between 0 and 1.

Returns:
            Tuple[float, float, float]: A tuple of three normalized colour components.
        """
        red, green, blue = self
        return red / 255.0, green / 255.0, blue / 255.0

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