Code point
U+3DFF
Glyph appearance depends on your fonts.
U+3DFF
LoU+3DFF CJK UNIFIED IDEOGRAPH-3DFF is a Unicode 16.0.0 character in the Other Letter category. It belongs to the CJK Unified Ideographs Extension A block.
Choose the representation you need, then copy its value.
U+3DFF
15871
㷿
㷿
E3 B7 BF
3DFF
00003DFF
%E3%B7%BF
\u3DFF
\u3DFF
\u3DFF
\3DFF