figure = plt.figure(1)
x = list(range(1, 200))
n_plots = 10
sns.set_palette(reversed(sns.color_palette('Blues_d', n_plots)), n_plots)
for offset in range(n_plots):
    plt.plot(x, [(offset + math.sin(float(i) / 10)) for i in range(len(x))])
figure.show()
Creating a dark, reversed color palette in Seaborn