Closest hex to #663dd0 is #64c

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#
#64c

663dd0

663dd0

contains 64

064 164 264 364 464 564 640 641 642 643 644 645 646 647 648 649 64a 64b 64c 64d 64e 64f 664 764 864 964 a64 b64 c64 d64 e64 f64

contains 4c

04c 14c 24c 34c 44c 4c0 4c1 4c2 4c3 4c4 4c5 4c6 4c7 4c8 4c9 4ca 4cb 4cc 4cd 4ce 4cf 54c 64c 74c 84c 94c a4c b4c c4c d4c e4c f4c

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