Closest hex to #15c298 is #1b9

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#
#1b9

15c298

15c298

contains 1b

01b 11b 1b0 1b1 1b2 1b3 1b4 1b5 1b6 1b7 1b8 1b9 1ba 1bb 1bc 1bd 1be 1bf 21b 31b 41b 51b 61b 71b 81b 91b a1b b1b c1b d1b e1b f1b

contains b9

0b9 1b9 2b9 3b9 4b9 5b9 6b9 7b9 8b9 9b9 ab9 b90 b91 b92 b93 b94 b95 b96 b97 b98 b99 b9a b9b b9c b9d b9e b9f bb9 cb9 db9 eb9 fb9

contains 19

019 119 190 191 192 193 194 195 196 197 198 199 19a 19b 19c 19d 19e 19f 219 319 419 519 619 719 819 919 a19 b19 c19 d19 e19 f19