Closest hex to #557777 is #577

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#577

557777

557777

contains 57

057 157 257 357 457 557 570 571 572 573 574 575 576 577 578 579 57a 57b 57c 57d 57e 57f 657 757 857 957 a57 b57 c57 d57 e57 f57

contains 77

077 177 277 377 477 577 677 770 771 772 773 774 775 776 777 778 779 77a 77b 77c 77d 77e 77f 877 977 a77 b77 c77 d77 e77 f77

contains 57

057 157 257 357 457 557 570 571 572 573 574 575 576 577 578 579 57a 57b 57c 57d 57e 57f 657 757 857 957 a57 b57 c57 d57 e57 f57