Color Mixer

# RGB linear interpolation color mixing

def hex_to_rgb(hex_color: str) -> tuple[int, int, int]:
    hex_color = hex_color.lstrip('#')
    return tuple(int(hex_color[i:i+2], 16) for i in (0, 2, 4))

def rgb_to_hex(r: int, g: int, b: int) -> str:
    return f"#{r:02x}{g:02x}{b:02x}"

def mix_colors(color_a: str, color_b: str, ratio: float = 0.5) -> str:
    """
    Mix two hex colors.
    ratio=0.0 -> pure color_a
    ratio=0.5 -> equal mix
    ratio=1.0 -> pure color_b
    """
    r1, g1, b1 = hex_to_rgb(color_a)
    r2, g2, b2 = hex_to_rgb(color_b)

    r = round(r1 + (r2 - r1) * ratio)
    g = round(g1 + (g2 - g1) * ratio)
    b = round(b1 + (b2 - b1) * ratio)

    return rgb_to_hex(r, g, b)

# Generate gradient steps
def gradient_steps(color_a: str, color_b: str, steps: int = 5) -> list[str]:
    return [mix_colors(color_a, color_b, i / (steps - 1)) for i in range(steps)]

print(mix_colors("#6366f1", "#ec4899", 0.5))  # #a7559d
print(gradient_steps("#6366f1", "#ec4899"))