Verbseoul.
ㅎ irregular (adj)
까맣다kkamatdato be pitch black

To say to be pitch black politely in the present tense, use 까매요 (ggah-mae-yoh). Below is the full conjugation of 까맣다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
까매
ggah-mae
까매요
ggah-mae-yoh
까맣습니다
ggah-mah-sseum-nee-dah
Past
까맸어
ggah-mae-ssuh
까맸어요
ggah-mae-ssuh-yoh
까맸습니다
ggah-mae-sseum-nee-dah
Future
까말 거야
ggah-mahl- -guh-yah
까말 거예요
ggah-mahl- -guh-yae-yoh
까말 겁니다
ggah-mahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
까마세요
ggah-mah-sae-yoh
Suggestion / Let's Polite (요)
까매요
ggah-mae-yoh
Question Polite (요)
까매요?
ggah-mae-yoh-?
Connective “and” — (고)
까맣고
ggah-mah-koh
Conditional “if” — (면)
까마면
ggah-mah-myuhn
Noun form — (기)
까맘
ggah-mahm