Siman 556
Presented here for study, not as a practical ruling. The Shulchan Aruch rules by Sephardi custom, the Rema's glosses by Ashkenazi custom, and the Kitzur follows Ashkenazi custom. For a practical question, ask your rabbi.
א לֵיל תִּשְׁעָה בְּאָב שֶׁחָל בְּאֶחָד בְּשַׁבָּת, כְּשֶׁרוֹאֶה הַנֵּר אוֹמֵר: בּוֹרֵא מְאוֹרֵי הָאֵשׁ; וְאֵין מְבָרֵךְ עַל הַבְּשָׂמִים. וּבְלֵיל מוֹצָאֵי תִּשְׁעָה בְּאָב מַבְדִּיל עַל הַכּוֹס וְאֵינוֹ מְבָרֵךְ, לֹא עַל הַנֵּר וְלֹא עַל הַבְּשָׂמִים.
1 Tisha b'Av that falls on Sunday: and containing one subsection. // The night of Tisha b'Av that falls on Saturday night, when a person sees the candle they should say borei m'orei ha'aish and they should not bless on spices. And on the night when Tisha b'Av goes out, one should make Havdalah on a cup [of wine] and should not bless either a candle or spices.