Color definition is a cultural thing. Behold, for example,
mizu.
View attachment 14239
Now to a Westerner, that's a light blue. But to a Japanese person, this isn't blue at all. It is its own color -
mizu.
"The existence of these colors doesn't necessarily mean Japanese is more sensitive to color differences overall compared to other languages—it doesn’t have names for some colors we can identify in English, such as magenta or lime. "
I remember being introduced to "mauve" as a kid - it was fashionable in the 70s at some stage. Still looks purple to me, I have no idea how people tell the difference.
http://mentalfloss.com/article/94054/english-doesnt-have-word-color-japanese-does