Closest hex to #aa66ff is #a6f

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#a6f

aa66ff

aa66ff

contains a6

0a6 1a6 2a6 3a6 4a6 5a6 6a6 7a6 8a6 9a6 a60 a61 a62 a63 a64 a65 a66 a67 a68 a69 a6a a6b a6c a6d a6e a6f aa6 ba6 ca6 da6 ea6 fa6

contains 6f

06f 16f 26f 36f 46f 56f 66f 6f0 6f1 6f2 6f3 6f4 6f5 6f6 6f7 6f8 6f9 6fa 6fb 6fc 6fd 6fe 6ff 76f 86f 96f a6f b6f c6f d6f e6f f6f

contains af

0af 1af 2af 3af 4af 5af 6af 7af 8af 9af aaf af0 af1 af2 af3 af4 af5 af6 af7 af8 af9 afa afb afc afd afe aff baf caf daf eaf faf