QUICK ANSWER
"Él es alto" is a phrase which is often translated as "he's tall", and "es moreno" is a phrase which is often translated as "he's dark-haired". Learn more about the difference between "él es alto" and "es moreno" below.
es moreno(
ehs
moh
-
reh
-
noh
)A phrase is a group of words commonly used together (e.g., once upon a time).
a. he's dark-haired
¿Es Antonio pelirrojo? - No, es moreno.Is Antonio red-haired? - No, he's dark-haired.
b. is dark-haired
Manolo es moreno, mientras que su hermana es rubia.Manolo is dark-haired, while his sister is blonde.
a. he's dark-skinned
Como es moreno, no se quema cuando toma el sol.Since he's dark-skinned, he doesn't get burned when he sunbathes.
b. is darked-skinned
Aunque tiene el pelo rubio, Ramón es moreno.Although he has blond hair, Ramon is darked-skinned.
c. he's dark
A Luis le queda bien este color porque es moreno.This color suits Luis because he's dark.