Closest hex to #3c517b is #457

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#
#457

3c517b

3c517b

contains 45

045 145 245 345 445 450 451 452 453 454 455 456 457 458 459 45a 45b 45c 45d 45e 45f 545 645 745 845 945 a45 b45 c45 d45 e45 f45

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 47

047 147 247 347 447 470 471 472 473 474 475 476 477 478 479 47a 47b 47c 47d 47e 47f 547 647 747 847 947 a47 b47 c47 d47 e47 f47