Closest hex to #1689c5 is #18c

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#18c

1689c5

1689c5

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 8c

08c 18c 28c 38c 48c 58c 68c 78c 88c 8c0 8c1 8c2 8c3 8c4 8c5 8c6 8c7 8c8 8c9 8ca 8cb 8cc 8cd 8ce 8cf 98c a8c b8c c8c d8c e8c f8c

contains 1c

01c 11c 1c0 1c1 1c2 1c3 1c4 1c5 1c6 1c7 1c8 1c9 1ca 1cb 1cc 1cd 1ce 1cf 21c 31c 41c 51c 61c 71c 81c 91c a1c b1c c1c d1c e1c f1c