If you declare an array, you need to populate it with code like:
Code:
Dim x As Long, y as long
Dim BlueLite As String 'Light blue RBG values
BlueLite = "219,229,241" '.
Dim RGBVals() As Variant 'Array for indivicdual RGB values
x = UBound(Split(BlueLite, ","))
ReDim RGBVals(x)
For i = 0 To x
RGBVals(y) = Split(BlueLite, ",")(y) '.
Next
It's not apparent why you'd want to go down the array path for RGB values, though, whichever approach you take.