In this article we will see how we can set the custom color in the QColorDialog widget. Custom colors are the color made by the user they can be set at the run time with the help of mouse although we can add custom color programmatically, by default all custom colors are white. Below is how the custom color in color dialog looks like 
In order to do this we use setCustomColor method with the QColorDialog object
Syntax : dialog.setCustomColor(i, color) Argument : It takes integer i.e index and QColor object as argument Return : It returns None
Note : This function does not apply to the Native Color Dialog on the macOS platform. If you still require this function, use the QColorDialog.DontUseNativeDialog option. Below is the implementation
Python3
# importing librariesfrom PyQt5.QtWidgets import *from PyQt5 import QtCore, QtGuifrom PyQt5.QtGui import *from PyQt5.QtCore import *import sysclass Window(QMainWindow): def __init__(self): super().__init__() # setting title self.setWindowTitle("Python ") # setting geometry self.setGeometry(100, 100, 500, 400) # calling method self.UiComponents() # showing all the widgets self.show() # method for components def UiComponents(self): # creating a QColorDialog object dialog = QColorDialog(self) # setting custom colors dialog.setCustomColor(1, Qt.red) dialog.setCustomColor(2, Qt.green) dialog.setCustomColor(3, Qt.yellow) dialog.setCustomColor(4, Qt.blue) # executing the dialog dialog.exec_() # creating label label = QLabel("neveropen", self) # setting geometry to the label label.setGeometry(100, 100, 300, 80) # making label multi line label.setWordWrap(True) # setting stylesheet of the label label.setStyleSheet("QLabel" "{" "border : 5px solid black;" "}") # getting the selected color color = dialog.selectedColor() # setting graphic effect to the label graphic = QGraphicsColorizeEffect(self) # setting color to the graphic graphic.setColor(color) # setting graphic to the label label.setGraphicsEffect(graphic)# create pyqt5 appApp = QApplication(sys.argv)# create the instance of our Windowwindow = Window()# start the appsys.exit(App.exec()) |
Output : 
