import seaborn as sns
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt

plt.rcParams["figure.figsize"] = [7.00, 3.50]
plt.rcParams["figure.autolayout"] = True

df = pd.DataFrame(
   np.random.random((4, 4)),
   columns=["a", "b", "c", "d"]
)

pp = sns.pairplot(df, height=1.5)
pp.fig.text(0.5, 0.5, "My Pairplot",
   color="green", fontdict=dict(size=20))

plt.show()