Closest hex to #00ff00 is #0f0

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#
#0f0

00ff00

00ff00

contains 0f

00f 0f0 0f1 0f2 0f3 0f4 0f5 0f6 0f7 0f8 0f9 0fa 0fb 0fc 0fd 0fe 0ff 10f 20f 30f 40f 50f 60f 70f 80f 90f a0f b0f c0f d0f e0f f0f

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

contains 00

000 001 002 003 004 005 006 007 008 009 00a 00b 00c 00d 00e 00f 100 200 300 400 500 600 700 800 900 a00 b00 c00 d00 e00 f00