Closest hex to #21d585 is #2d8

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#2d8

21d585

21d585

contains 2d

02d 12d 22d 2d0 2d1 2d2 2d3 2d4 2d5 2d6 2d7 2d8 2d9 2da 2db 2dc 2dd 2de 2df 32d 42d 52d 62d 72d 82d 92d a2d b2d c2d d2d e2d f2d

contains d8

0d8 1d8 2d8 3d8 4d8 5d8 6d8 7d8 8d8 9d8 ad8 bd8 cd8 d80 d81 d82 d83 d84 d85 d86 d87 d88 d89 d8a d8b d8c d8d d8e d8f dd8 ed8 fd8

contains 28

028 128 228 280 281 282 283 284 285 286 287 288 289 28a 28b 28c 28d 28e 28f 328 428 528 628 728 828 928 a28 b28 c28 d28 e28 f28