Closest hex to #678a31 is #683

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#
#683

678a31

678a31

contains 68

068 168 268 368 468 568 668 680 681 682 683 684 685 686 687 688 689 68a 68b 68c 68d 68e 68f 768 868 968 a68 b68 c68 d68 e68 f68

contains 83

083 183 283 383 483 583 683 783 830 831 832 833 834 835 836 837 838 839 83a 83b 83c 83d 83e 83f 883 983 a83 b83 c83 d83 e83 f83

contains 63

063 163 263 363 463 563 630 631 632 633 634 635 636 637 638 639 63a 63b 63c 63d 63e 63f 663 763 863 963 a63 b63 c63 d63 e63 f63