Closest hex to #40e5b4 is #4db

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#4db

40e5b4

40e5b4

contains 4d

04d 14d 24d 34d 44d 4d0 4d1 4d2 4d3 4d4 4d5 4d6 4d7 4d8 4d9 4da 4db 4dc 4dd 4de 4df 54d 64d 74d 84d 94d a4d b4d c4d d4d e4d f4d

contains db

0db 1db 2db 3db 4db 5db 6db 7db 8db 9db adb bdb cdb db0 db1 db2 db3 db4 db5 db6 db7 db8 db9 dba dbb dbc dbd dbe dbf ddb edb fdb

contains 4b

04b 14b 24b 34b 44b 4b0 4b1 4b2 4b3 4b4 4b5 4b6 4b7 4b8 4b9 4ba 4bb 4bc 4bd 4be 4bf 54b 64b 74b 84b 94b a4b b4b c4b d4b e4b f4b