Formula IF(AND statements

[scoobz1234]

Good Morning,

I am trying to create 3 formulas to check column M for conditions.
condition 1 is BLANK and C4 is LESS than TODAY(). highlight RED
condition 2 is "Routed" highlight YELLOW
condition 3 is "Filed/Complete" highlight GREEN
i tried

=IF(AND(M4=BLANK, C4<TODAY()),"")

<TODAY()),"")<TODAY()),)<TODAY()),"")<TODAY()),"") doesnt this but html work.<>

 

[scoobz1234]

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