Closest hex to #645ad2 is #65c

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#
#65c

645ad2

645ad2

contains 65

065 165 265 365 465 565 650 651 652 653 654 655 656 657 658 659 65a 65b 65c 65d 65e 65f 665 765 865 965 a65 b65 c65 d65 e65 f65

contains 5c

05c 15c 25c 35c 45c 55c 5c0 5c1 5c2 5c3 5c4 5c5 5c6 5c7 5c8 5c9 5ca 5cb 5cc 5cd 5ce 5cf 65c 75c 85c 95c a5c b5c c5c d5c e5c f5c

contains 6c

06c 16c 26c 36c 46c 56c 66c 6c0 6c1 6c2 6c3 6c4 6c5 6c6 6c7 6c8 6c9 6ca 6cb 6cc 6cd 6ce 6cf 76c 86c 96c a6c b6c c6c d6c e6c f6c