Font color in RichTextBox problem

I'm trying to set the font color in a richtextbox (rtbSample) based on the position of 3 scrollbars (scrRGB(0,1,2))and it's rgb value in a textbox (txtRGB) but it just won't work. Any ideas?

Code:

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Private Sub scrRGB_Change(Index As Integer)
  Dim CombinedValue As Long
  CombinedValue = RGB(scrRGB(0).Value, scrRGB(1).Value, scrRGB(2).Value)
  txtRGB.Text = "&H" & CombinedValue
  picRGB.BackColor = CombinedValue
End Sub 'scrRGB_Change(Index As Integer)
Private Sub txtRGB_Change()
  rtbSample.SelStart = 0
  rtbSample.SelLength = Len(rtbSample.Text)
  rtbSample.SelColor = txtRGB.Text
End Sub
Private Sub txtRGB_GotFocus()
  If Len(txtRGB.Text) > 0 Then
    txtRGB.SelStart = 0
    txtRGB.SelLength = Len(txtRGB.Text)
  End If
End Sub 'txtRGB_GotFocus()

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Your conversion of an RGB Colour to a Hex Colour is incorrect.

Create the Hex Colour by concatenating the Hex value of each scroll bar but note that Hex Colours are in the form BBGGRR.

txtRGB.Text = "&H" & Format$(Hex(scrRGB(2).Value), "00") & Format$(Hex(scrRGB(1).Value), "00") & Format$(Hex(scrRGB(0).Value), "00")

or simply set the rtbSample.SelColor = picRGB.BackColor