I suspect the slight color variations (and their names) are driven by marketing folks, trying to stay in competition with other manufacturers. Nebula green, anyone?
It could also be a result of changes in paint formulations, or different paint manufacturers.
Also, if you look at skydog's repost of my test image, above, you see that the BASF test sheet has four different shades of primer, from white to black. Even the primer has some effect on color variation.
I've also noticed some folks here pick a color name and call their blue that color, without any real evidence that it really is original.
Finally, pictures taken by different cameras in different lighting often don't look the same. That's why my test image was taken on the same photo, in daylight, even though there were some high clouds altering the sunlight a little, at least relative to each other you can perceive a difference. Top right, gleam blue, hinge, horizontal blue, lower right "R-M (BASF) color SB015.00 in a single stage urethane.
Now look at the following two pictures:
(
splib,
Jul 24, 2012 post #13) R-M (BASF) color SB015.00
R-M (BASF) color SB015.00 (cell phone pic with flash) (mine, taken a few days ago.)
View attachment 1481738
R-M (BASF) color SB015.00 (cell phone pic with LED daylight shop lights) (mine, taken a few days ago.)
View attachment 1481823
The preceding three pictures have the same exact paint but with two different cameras in three different lighting conditions.
In person, mine looks like the first picture.
Go figure!