Closest hex to #7733ff is #73f

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#73f

7733ff

7733ff

contains 73

073 173 273 373 473 573 673 730 731 732 733 734 735 736 737 738 739 73a 73b 73c 73d 73e 73f 773 873 973 a73 b73 c73 d73 e73 f73

contains 3f

03f 13f 23f 33f 3f0 3f1 3f2 3f3 3f4 3f5 3f6 3f7 3f8 3f9 3fa 3fb 3fc 3fd 3fe 3ff 43f 53f 63f 73f 83f 93f a3f b3f c3f d3f e3f f3f

contains 7f

07f 17f 27f 37f 47f 57f 67f 77f 7f0 7f1 7f2 7f3 7f4 7f5 7f6 7f7 7f8 7f9 7fa 7fb 7fc 7fd 7fe 7ff 87f 97f a7f b7f c7f d7f e7f f7f