Thoughts on this colour

In regards to B5 blue and and its name. In my Dodge and Plymouth Muscle Car Red Book it lists the following.
1968 Plymouth QQ1 Electric Blue
1968 Dodge QQ1 Bright Blue Metallic
1969 Dodge B5 Bright Blue Metallic
1969 Plymouth B5 Blue Fire Metallic
So is B5 Blue the same color in 1968 and 1969 or was QQ1 a different color in 1969 but dodge just kept the same name as the previous (1968) model year and Plymouth changed the name because it was actually a different color?

Or to put it another way is a 1968 Charger with QQ1 Bright Blue Metallic the same color as a 1969 Charger with B5 Bright Blue Metallic?

The reason I ask is I had always thought Electric Blue was a different color than B5 Blue

Dodge says QQ1 and B5 are the same color. Plymouth says they are different colors