Closest hex to #21c350 is #2b5

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#2b5

21c350

21c350

contains 2b

02b 12b 22b 2b0 2b1 2b2 2b3 2b4 2b5 2b6 2b7 2b8 2b9 2ba 2bb 2bc 2bd 2be 2bf 32b 42b 52b 62b 72b 82b 92b a2b b2b c2b d2b e2b f2b

contains b5

0b5 1b5 2b5 3b5 4b5 5b5 6b5 7b5 8b5 9b5 ab5 b50 b51 b52 b53 b54 b55 b56 b57 b58 b59 b5a b5b b5c b5d b5e b5f bb5 cb5 db5 eb5 fb5

contains 25

025 125 225 250 251 252 253 254 255 256 257 258 259 25a 25b 25c 25d 25e 25f 325 425 525 625 725 825 925 a25 b25 c25 d25 e25 f25