Closest hex to #42b51b is #4b2

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#4b2

42b51b

42b51b

contains 4b

04b 14b 24b 34b 44b 4b0 4b1 4b2 4b3 4b4 4b5 4b6 4b7 4b8 4b9 4ba 4bb 4bc 4bd 4be 4bf 54b 64b 74b 84b 94b a4b b4b c4b d4b e4b f4b

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 42

042 142 242 342 420 421 422 423 424 425 426 427 428 429 42a 42b 42c 42d 42e 42f 442 542 642 742 842 942 a42 b42 c42 d42 e42 f42