Closest hex to #508b81 is #588

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#588

508b81

508b81

contains 58

058 158 258 358 458 558 580 581 582 583 584 585 586 587 588 589 58a 58b 58c 58d 58e 58f 658 758 858 958 a58 b58 c58 d58 e58 f58

contains 88

088 188 288 388 488 588 688 788 880 881 882 883 884 885 886 887 888 889 88a 88b 88c 88d 88e 88f 988 a88 b88 c88 d88 e88 f88

contains 58

058 158 258 358 458 558 580 581 582 583 584 585 586 587 588 589 58a 58b 58c 58d 58e 58f 658 758 858 958 a58 b58 c58 d58 e58 f58