Closest hex to #1781a8 is #18a

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#18a

1781a8

1781a8

contains 18

018 118 180 181 182 183 184 185 186 187 188 189 18a 18b 18c 18d 18e 18f 218 318 418 518 618 718 818 918 a18 b18 c18 d18 e18 f18

contains 8a

08a 18a 28a 38a 48a 58a 68a 78a 88a 8a0 8a1 8a2 8a3 8a4 8a5 8a6 8a7 8a8 8a9 8aa 8ab 8ac 8ad 8ae 8af 98a a8a b8a c8a d8a e8a f8a

contains 1a

01a 11a 1a0 1a1 1a2 1a3 1a4 1a5 1a6 1a7 1a8 1a9 1aa 1ab 1ac 1ad 1ae 1af 21a 31a 41a 51a 61a 71a 81a 91a a1a b1a c1a d1a e1a f1a