Closest hex to #aabb00 is #ab0

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#
#ab0

aabb00

aabb00

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 b0

0b0 1b0 2b0 3b0 4b0 5b0 6b0 7b0 8b0 9b0 ab0 b00 b01 b02 b03 b04 b05 b06 b07 b08 b09 b0a b0b b0c b0d b0e b0f bb0 cb0 db0 eb0 fb0

contains a0

0a0 1a0 2a0 3a0 4a0 5a0 6a0 7a0 8a0 9a0 a00 a01 a02 a03 a04 a05 a06 a07 a08 a09 a0a a0b a0c a0d a0e a0f aa0 ba0 ca0 da0 ea0 fa0