Closest hex to #1c8689 is #288

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#
#288

1c8689

1c8689

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

contains 88

088 188 288 388 488 588 688 788 880 881 882 883 884 885 886 887 888 889 88a 88b 88c 88d 88e 88f 988 a88 b88 c88 d88 e88 f88

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