Closest hex to #1188bb is #18b

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#
#18b

1188bb

1188bb

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 8b

08b 18b 28b 38b 48b 58b 68b 78b 88b 8b0 8b1 8b2 8b3 8b4 8b5 8b6 8b7 8b8 8b9 8ba 8bb 8bc 8bd 8be 8bf 98b a8b b8b c8b d8b e8b f8b

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