Bug summary

Use imshow to generate a figure, and then save it as a pdf file. If you open the generated pdf figure in Adobe Illustrator, the figure in Adobe Illustrator becomes different. Colors are wrongly assigned.

Code for reproduction

import numpy as np
import matplotlib.pyplot as plt

import matplotlib
print(matplotlib.__version__)

a = np.array([[1, 2, 3], [4, 5, 6]])
plt.matshow(a)
plt.savefig(‘test.pdf’)

Actual outcome

Expected outcome

Additional information

No response

Operating system

No response

Matplotlib Version

3.8.3

Matplotlib Backend

module://matplotlib_inline.backend_inline

Python version

3.10.13

Jupyter version

7.0.8

Installation

conda