Closest hex to #640dc0 is #61b

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#
#61b

640dc0

640dc0

contains 61

061 161 261 361 461 561 610 611 612 613 614 615 616 617 618 619 61a 61b 61c 61d 61e 61f 661 761 861 961 a61 b61 c61 d61 e61 f61

contains 1b

01b 11b 1b0 1b1 1b2 1b3 1b4 1b5 1b6 1b7 1b8 1b9 1ba 1bb 1bc 1bd 1be 1bf 21b 31b 41b 51b 61b 71b 81b 91b a1b b1b c1b d1b e1b f1b

contains 6b

06b 16b 26b 36b 46b 56b 66b 6b0 6b1 6b2 6b3 6b4 6b5 6b6 6b7 6b8 6b9 6ba 6bb 6bc 6bd 6be 6bf 76b 86b 96b a6b b6b c6b d6b e6b f6b