Closest hex to #aabb11 is #ab1

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#
#ab1

aabb11

aabb11

contains ab

0ab 1ab 2ab 3ab 4ab 5ab 6ab 7ab 8ab 9ab aab ab0 ab1 ab2 ab3 ab4 ab5 ab6 ab7 ab8 ab9 aba abb abc abd abe abf bab cab dab eab fab

contains b1

0b1 1b1 2b1 3b1 4b1 5b1 6b1 7b1 8b1 9b1 ab1 b10 b11 b12 b13 b14 b15 b16 b17 b18 b19 b1a b1b b1c b1d b1e b1f bb1 cb1 db1 eb1 fb1

contains a1

0a1 1a1 2a1 3a1 4a1 5a1 6a1 7a1 8a1 9a1 a10 a11 a12 a13 a14 a15 a16 a17 a18 a19 a1a a1b a1c a1d a1e a1f aa1 ba1 ca1 da1 ea1 fa1