python 显示RGB颜色

import cv2
import numpy as np
 
if __name__ == '__main__':
 
    data=np.zeros((400,400,3),dtype=np.uint8)
 
    # data[:]=(104,148,92)
    data[:]=(0,0,255)
    cv2.imshow("aaa1",data)
    data=cv2.cvtColor(data,cv2.COLOR_BGR2RGB)
    cv2.imshow("aaa2",data)
    cv2.waitKey()