Closest hex to #99ff77 is #9f7

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#9f7

99ff77

99ff77

contains 9f

09f 19f 29f 39f 49f 59f 69f 79f 89f 99f 9f0 9f1 9f2 9f3 9f4 9f5 9f6 9f7 9f8 9f9 9fa 9fb 9fc 9fd 9fe 9ff a9f b9f c9f d9f e9f f9f

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 97

097 197 297 397 497 597 697 797 897 970 971 972 973 974 975 976 977 978 979 97a 97b 97c 97d 97e 97f 997 a97 b97 c97 d97 e97 f97