[Python] OpenCV RGB2HSV color space convertion gives wrong results, colors aren't similar

Why the color space conversion goes wrong (images are not roughly similar) when I use OpenCV COLOR_RGB2HSV and goes right when using image.convert('HSV') ? What I'm doing wrong?

import cv2
from PIL import Image

image = Image.open('picture_1.jpg')

img1=cv2.imread('picture_1.jpg')
img2=cv2.cvtColor(img1,cv2.COLOR_BGR2RGB)
img3=cv2.cvtColor(img2,cv2.COLOR_RGB2HSV)
img4=cv2.cvtColor(img3,cv2.COLOR_HSV2RGB)

fig, ax = plt.subplots(2, 2, figsize=(16, 6), subplot_kw=dict(xticks=[], yticks=[]))
fig.subplots_adjust(wspace=0.05)
ax[0][0].imshow(img1)
ax[0][0].set_title('BGR', size=16)
ax[0][1].imshow(img2)
ax[0][1].set_title('RGB', size=16);
ax[1][0].imshow(img3)
ax[1][0].set_title('HSV', size=16);
ax[1][1].imshow(image.convert('HSV'))
ax[1][1].set_title('HSV', size=16);


I got this results:



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