Closest hex to #FF7F23 is #f72

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#f72

FF7F23

FF7F23

contains f7

0f7 1f7 2f7 3f7 4f7 5f7 6f7 7f7 8f7 9f7 af7 bf7 cf7 df7 ef7 f70 f71 f72 f73 f74 f75 f76 f77 f78 f79 f7a f7b f7c f7d f7e f7f ff7

contains 72

072 172 272 372 472 572 672 720 721 722 723 724 725 726 727 728 729 72a 72b 72c 72d 72e 72f 772 872 972 a72 b72 c72 d72 e72 f72

contains f2

0f2 1f2 2f2 3f2 4f2 5f2 6f2 7f2 8f2 9f2 af2 bf2 cf2 df2 ef2 f20 f21 f22 f23 f24 f25 f26 f27 f28 f29 f2a f2b f2c f2d f2e f2f ff2