How to create conditional formatting based on another measure value

Hi SamOvermars ,

I suggest you to create a measure and use Field value in conditional formatting.

Goal Color = 
VAR Value_From_Table1 =
    SUM ( Table1[Column1] )
VAR Category_From_Table2 =
    CALCULATE (
        MAX ( Table2[Category] ),
        FILTER ( Table2, Table2[Related Column] = MAX ( Table1[Related Column] ) )
    )
RETURN
    SWITCH (
        TRUE (),
        AND ( Category_From_Table2 = "Category_A", Value_From_Table1 <= 10 ), "Red",
        AND ( Category_From_Table2 = "Category_B", Value_From_Table1 <= 12 ), "Red",
        AND ( Category_From_Table2 = "Category_C", Value_From_Table1 <= 55 ), "Red",
        AND ( Category_From_Table2 = "Category_D", Value_From_Table1 <= 10 ), "Red",
        AND ( Category_From_Table2 = "Category_E", Value_From_Table1 <= 14 ), "Red",
        "Green"
    )

Use Field value as Format style and use this measure.

Result is as below.

Best Regards,
Rico Zhou

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