Closest hex to #50b661 is #5b6

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#5b6

50b661

50b661

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 b6

0b6 1b6 2b6 3b6 4b6 5b6 6b6 7b6 8b6 9b6 ab6 b60 b61 b62 b63 b64 b65 b66 b67 b68 b69 b6a b6b b6c b6d b6e b6f bb6 cb6 db6 eb6 fb6

contains 56

056 156 256 356 456 556 560 561 562 563 564 565 566 567 568 569 56a 56b 56c 56d 56e 56f 656 756 856 956 a56 b56 c56 d56 e56 f56