Closest hex to #21BA42 is #2b4

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#2b4

21BA42

21BA42

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 b4

0b4 1b4 2b4 3b4 4b4 5b4 6b4 7b4 8b4 9b4 ab4 b40 b41 b42 b43 b44 b45 b46 b47 b48 b49 b4a b4b b4c b4d b4e b4f bb4 cb4 db4 eb4 fb4

contains 24

024 124 224 240 241 242 243 244 245 246 247 248 249 24a 24b 24c 24d 24e 24f 324 424 524 624 724 824 924 a24 b24 c24 d24 e24 f24