import numpy as np
import matplotlib.pyplot as plt

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

plasma = plt.get_cmap('GnBu_r')
values = np.random.rand(100)

x = np.random.rand(len(values))
y = np.random.rand(len(values))

sc = plt.scatter(x, y, c = [plasma(val) for val in values])

plt.show()