Closest hex to #77ff44 is #7f4

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#7f4

77ff44

77ff44

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

contains f4

0f4 1f4 2f4 3f4 4f4 5f4 6f4 7f4 8f4 9f4 af4 bf4 cf4 df4 ef4 f40 f41 f42 f43 f44 f45 f46 f47 f48 f49 f4a f4b f4c f4d f4e f4f ff4

contains 74

074 174 274 374 474 574 674 740 741 742 743 744 745 746 747 748 749 74a 74b 74c 74d 74e 74f 774 874 974 a74 b74 c74 d74 e74 f74