Closest hex to #3dff22 is #4f2

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#4f2

3dff22

3dff22

contains 4f

04f 14f 24f 34f 44f 4f0 4f1 4f2 4f3 4f4 4f5 4f6 4f7 4f8 4f9 4fa 4fb 4fc 4fd 4fe 4ff 54f 64f 74f 84f 94f a4f b4f c4f d4f e4f f4f

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

contains 42

042 142 242 342 420 421 422 423 424 425 426 427 428 429 42a 42b 42c 42d 42e 42f 442 542 642 742 842 942 a42 b42 c42 d42 e42 f42