Closest hex to #aabb44 is #ab4

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#
#ab4

aabb44

aabb44

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 b4

0b4 1b4 2b4 3b4 4b4 5b4 6b4 7b4 8b4 9b4 ab4 b40 b41 b42 b43 b44 b45 b46 b47 b48 b49 b4a b4b b4c b4d b4e b4f bb4 cb4 db4 eb4 fb4

contains a4

0a4 1a4 2a4 3a4 4a4 5a4 6a4 7a4 8a4 9a4 a40 a41 a42 a43 a44 a45 a46 a47 a48 a49 a4a a4b a4c a4d a4e a4f aa4 ba4 ca4 da4 ea4 fa4