Generate random line colors in Matplotlib Python

By Gaurav Jagwani

In this tutorial, we learn to generate random line colors in Matplotlib in Python.

You can check: Plot Multiple lines in Matplotlib

Matplotlib is a data visualizing library in Python which helps us to create 2D and 3D plots of data. We will use random() function to generate random colors.

To install matplotlib library on your local machine, open command prompt / terminal and write:

pip install matplotlib

How to Generate random line colors in Matplotlib

Import libraries

# Import libraries
import matplotlib.pyplot as plt
import random as random

Define data

# define data
x = [2, 4, 6, 8, 10]
y = [7, 11, 18, 22, 25]

We will create three color variables using random.random() function. All three color variables are merged into a tuple.

color_1= random.random()
color_2= random.random()
color_3= random.random()

#define random color
color = (color_1, color_2, color_3)

plt.plot() will take X and Y coordinates and color function.

#create line plot with random color
plt.plot(x, y, c=color)

# Import libraries
import matplotlib.pyplot as plt
import random as random

#define data
x = [2, 4, 6, 8, 10]
y = [7, 11, 18, 22, 25]

color_1= random.random()
color_2= random.random()
color_3= random.random()

#define random color
color = (color_1, color_2, color_3)

#create line plot with random color
plt.plot(x, y, c=color)

Output:

Re-run this code to generate a new random color.

We have successfully generated random line colors using Matplotlib.