Closest hex to #56c320 is #5b2

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#5b2

56c320

56c320

contains 5b

05b 15b 25b 35b 45b 55b 5b0 5b1 5b2 5b3 5b4 5b5 5b6 5b7 5b8 5b9 5ba 5bb 5bc 5bd 5be 5bf 65b 75b 85b 95b a5b b5b c5b d5b e5b f5b

contains b2

0b2 1b2 2b2 3b2 4b2 5b2 6b2 7b2 8b2 9b2 ab2 b20 b21 b22 b23 b24 b25 b26 b27 b28 b29 b2a b2b b2c b2d b2e b2f bb2 cb2 db2 eb2 fb2

contains 52

052 152 252 352 452 520 521 522 523 524 525 526 527 528 529 52a 52b 52c 52d 52e 52f 552 652 752 852 952 a52 b52 c52 d52 e52 f52