PyQt5 – Background Color of Progress Bar

When we create a progress bar, by default there is no background color set to it, although the bar color is of green. In this article we will see how to set the background color to the progress bar. Below is the representation of normal progress bar vs the progress bar which has background color.

In order to do this we have to change the CSS style sheet using setStyleSheet method, below is the style sheet.

QProgressBar
{
background-color :lightblue;
border : 1px;
}

Below is the implementation.

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# importing libraries
from PyQt5.QtWidgets import * 
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import * 
from PyQt5.QtCore import * 
import sys
  
  
class Window(QMainWindow):
  
    def __init__(self):
        super().__init__()
  
        # setting title
        self.setWindowTitle("Python ")
  
        # setting geometry
        self.setGeometry(100, 100, 600, 400)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
    # method for widgets
    def UiComponents(self):
        # creating progress bar
        bar = QProgressBar(self)
  
        # setting geometry to progress bar
        bar.setGeometry(200, 100, 200, 30)
  
        # setting the value
        bar.setValue(30)
  
        # setting alignment to center
        bar.setAlignment(Qt.AlignCenter)
  
        # setting background color
        bar.setStyleSheet("QProgressBar"
                          "{"
                          "background-color : lightblue;"
                          "border : 1px"
                          "}")
  
  
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

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Output :

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