Closest hex to #28d390 is #2c8

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#2c8

28d390

28d390

contains 2c

02c 12c 22c 2c0 2c1 2c2 2c3 2c4 2c5 2c6 2c7 2c8 2c9 2ca 2cb 2cc 2cd 2ce 2cf 32c 42c 52c 62c 72c 82c 92c a2c b2c c2c d2c e2c f2c

contains c8

0c8 1c8 2c8 3c8 4c8 5c8 6c8 7c8 8c8 9c8 ac8 bc8 c80 c81 c82 c83 c84 c85 c86 c87 c88 c89 c8a c8b c8c c8d c8e c8f cc8 dc8 ec8 fc8

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