The Person Gesturing OK: Medium-Dark Skin Tone emoji is a modifier sequence combining ? Person Gesturing OK and ? Medium-Dark Skin Tone. These display as a single emoji on supported platforms.
Person Gesturing OK: Medium-Dark Skin Tone was added to Emoji 2.0 in 2015.
U+1F646
U+1F3FE
?? Face with ok gesture
?? Emoji modifier fitzpatrick type-5