import numpy as np
from matplotlib import pyplot as plt

plt.rcParams["figure.figsize"] = [7.50, 3.50]
plt.rcParams["figure.autolayout"] = True

x = np.linspace(1, 10, 1000)
y = np.linspace(10, 20, 1000)

line, = plt.plot(x, y, c="red", lw=2)

print("最近绘制的线的颜色：", line.get_color())

plt.show()

最近绘制的线的颜色：red