Closest hex to #ff6600 is #f60

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#f60

ff6600

ff6600

contains f6

0f6 1f6 2f6 3f6 4f6 5f6 6f6 7f6 8f6 9f6 af6 bf6 cf6 df6 ef6 f60 f61 f62 f63 f64 f65 f66 f67 f68 f69 f6a f6b f6c f6d f6e f6f ff6

contains 60

060 160 260 360 460 560 600 601 602 603 604 605 606 607 608 609 60a 60b 60c 60d 60e 60f 660 760 860 960 a60 b60 c60 d60 e60 f60

contains f0

0f0 1f0 2f0 3f0 4f0 5f0 6f0 7f0 8f0 9f0 af0 bf0 cf0 df0 ef0 f00 f01 f02 f03 f04 f05 f06 f07 f08 f09 f0a f0b f0c f0d f0e f0f ff0