Closest hex to #abca09 is #ac1

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#
#ac1

abca09

abca09

contains ac

0ac 1ac 2ac 3ac 4ac 5ac 6ac 7ac 8ac 9ac aac ac0 ac1 ac2 ac3 ac4 ac5 ac6 ac7 ac8 ac9 aca acb acc acd ace acf bac cac dac eac fac

contains c1

0c1 1c1 2c1 3c1 4c1 5c1 6c1 7c1 8c1 9c1 ac1 bc1 c10 c11 c12 c13 c14 c15 c16 c17 c18 c19 c1a c1b c1c c1d c1e c1f cc1 dc1 ec1 fc1

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