Why "son azul oscuro" instead of "son azules oscuros"

Question

"Mis pantalones son azules oscuros."

"Mis pantalones son azul oscuro."

Which sentence is the correct translation of "My pants are dark blue?"

Answer 1

EDIT: Sorry didn't see the "Why"

"Mis pantalones son azul oscuro" > because the color is modified by "dark"

"Mis pantalones son azules " > in this case the color isn't modified and is possible to use the plural.

Thanks :D - ash-kash-bgash, Aug 1, 2014

Here is a sill question Pablo, pantalones , it is only one pair , why is it treated as two , in English ,"pants" or " pantaloons" is singular . Originally it was two pieces of material without a gusset , is that the reason? - ray76, Aug 1, 2014

c: - GexThunderstrom, Aug 1, 2014

I sent you a MP ray! - 003e54f5, Aug 1, 2014