Closest hex to #645921 is #652

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#
#652

645921

645921

contains 65

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contains 52

052 152 252 352 452 520 521 522 523 524 525 526 527 528 529 52a 52b 52c 52d 52e 52f 552 652 752 852 952 a52 b52 c52 d52 e52 f52

contains 62

062 162 262 362 462 562 620 621 622 623 624 625 626 627 628 629 62a 62b 62c 62d 62e 62f 662 762 862 962 a62 b62 c62 d62 e62 f62