Closest hex to #90a90a is #8a1

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#
#8a1

90a90a

90a90a

contains 8a

08a 18a 28a 38a 48a 58a 68a 78a 88a 8a0 8a1 8a2 8a3 8a4 8a5 8a6 8a7 8a8 8a9 8aa 8ab 8ac 8ad 8ae 8af 98a a8a b8a c8a d8a e8a f8a

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

contains 81

081 181 281 381 481 581 681 781 810 811 812 813 814 815 816 817 818 819 81a 81b 81c 81d 81e 81f 881 981 a81 b81 c81 d81 e81 f81