Quote - I wondered if there should be an off-white category. Notice how many off-whites are represented in the orange (O) group. These subtle variations just seemed necessary to me.

There is a very strong representation of red-orange-yellow, because it seemed to me that you need more tiny variations here than in the blue-magenta area.

At least you aren't dealing with real paint. We built a house recently, and we had it painted what we thought was a warm beige color. We didn't pay attention to the numbering on the paint sample (which indicated that it was in the orange family.) Under some lighting conditions (natural afternoon light) it is definitely orange.