When a persons urine is dark enough to be orange is this dehydration?

Dark urine: Urine which is orange/dark yellow is usually indicative of decreased water intake. However, urine which is red/black is alarming and you should see your physician. Try hydrating and see if urine clears up.

Maybe,maybe not: The darkening usually means poor hydration status.However, there are some medications & food dyes that can provide a rainbow of different colors including orange, to the urine.