API Documentation > CorelDRAW > 2025-v26 > Color > IVGColor
Color.YIQChromaQ property
Gets or sets the YIQ Q color value
Syntax:
Property Get YIQChromaQ() As Long
Property Let YIQChromaQ(ByVal Value As Long)
Remarks:
The YIQChromaQ returns or specifies the Q color value for the YIQ color model in CorelDRAW. The Q value sets one of two chromaticity values in the YIQ color model. In monitor calibration, chromaticity refers to the chroma (hue adjustment) of your monitor. Values range from 0 to 255. A color is an effect applied to an object that alters the object's appearance by the way it reflects light. A color model is a system that defines the number and type of colors that make up an image and that is used to organize and define colors according to a set of basic properties that can be reproduced. Black-and-white, grayscale, RGB, CMYK, and paletted are examples of popular color modes. The YIQ color model is a color model used in television broadcast systems (North American video standard, or NTSC). Colors are split into a luminance value (Y) and two chromaticity values (I and Q). On a color monitor, all three components are visible. On a monochrome monitor, only the Y component is visible. The square, two-dimensional visual selector defines the I and Q values, and the vertical visual selector defines the Y value. All values are scaled from 0 to 255.
Examples:
The following VBA example sets the fill of the object to YIQ purple and displays the YIQChromaQ value in a message box.
Sub Test()
With ActiveSelection.Shapes(1).Fill.UniformColor
  .YIQAssign 100, 255, 255
  MsgBox .YIQChromaQ
End With 
End Sub