Object name: NGC6756
NGC 6756 is an open star cluster in Aquila. WEBDA puts it at just under 5,000 light-years distant. They put its age at about 62 million years. That young I expected it to be very blue but it wasn't very blue at all. That bothered me until I read it is severely obscured by dust that is reddening it by 1.18 magnitudes. That certainly explains why the stars weren't all that blue.