Closest hex to #3afc01 is #3f0

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#3f0

3afc01

3afc01

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 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 30

030 130 230 300 301 302 303 304 305 306 307 308 309 30a 30b 30c 30d 30e 30f 330 430 530 630 730 830 930 a30 b30 c30 d30 e30 f30