Closest hex to #15d5c1 is #1db

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#1db

15d5c1

15d5c1

contains 1d

01d 11d 1d0 1d1 1d2 1d3 1d4 1d5 1d6 1d7 1d8 1d9 1da 1db 1dc 1dd 1de 1df 21d 31d 41d 51d 61d 71d 81d 91d a1d b1d c1d d1d e1d f1d

contains db

0db 1db 2db 3db 4db 5db 6db 7db 8db 9db adb bdb cdb db0 db1 db2 db3 db4 db5 db6 db7 db8 db9 dba dbb dbc dbd dbe dbf ddb edb fdb

contains 1b

01b 11b 1b0 1b1 1b2 1b3 1b4 1b5 1b6 1b7 1b8 1b9 1ba 1bb 1bc 1bd 1be 1bf 21b 31b 41b 51b 61b 71b 81b 91b a1b b1b c1b d1b e1b f1b