PALETTE = [
    ("Red",    "#e53935"),
    ("Orange", "#fb8c00"),
    ("Yellow", "#fdd835"),
    ("Green",  "#43a047"),
    ("Teal",   "#00897b"),
    ("Blue",   "#1e88e5"),
    ("Purple", "#8e24aa"),
    ("Pink",   "#e91e63"),
    ("White",  "#f5f5f5"),
    ("Gray",   "#4a5568"),
]

PALETTE_NAMES = [p[0] for p in PALETTE]
PALETTE_HEX = {p[0]: p[1] for p in PALETTE}

PALETTE_VIVID = {
    "Red":    "#7f0000",
    "Orange": "#7f3000",
    "Yellow": "#7f6000",
    "Green":  "#1b5e20",
    "Teal":   "#004d40",
    "Blue":   "#0d2b6e",
    "Purple": "#4a0072",
    "Pink":   "#7f004d",
    "White":  "#9e9e9e",
    "Gray":   "#263238",
}

def lighten_hex(hex_color, amount=0):
    hex_color = hex_color.lstrip("#")
    r, g, b = int(hex_color[0:2], 16), int(hex_color[2:4], 16), int(hex_color[4:6], 16)
    r = min(255, r + amount)
    g = min(255, g + amount)
    b = min(255, b + amount)
    return f"#{r:02x}{g:02x}{b:02x}"


def darken_hex(hex_color, amount=60):
    hex_color = hex_color.lstrip("#")
    r, g, b = int(hex_color[0:2], 16), int(hex_color[2:4], 16), int(hex_color[4:6], 16)
    r = max(0, r - amount)
    g = max(0, g - amount)
    b = max(0, b - amount)
    return f"#{r:02x}{g:02x}{b:02x}"