Legend for a matrix timeline in powerbi

[SCNCKS1]

Hi - i created a timeline matrix in powerbi that shows planned and actual and the overlap (photo below). I used the code below the photo to populate the table. I am wondering what is the best way to create a legend that explains the red is planned, blue is actual and purple is where they overlap. All of the videos use a status to create a dynamic legend, but I don't have a status, thought i could create one based on the dates in my table if necessary. The data is in a stand-alone table with 2 relationships, one to date, and one to project. Any ideas on the most efficient way to create this?

Gantt =

VAR EST_StartDate =

CALCULATE(

    Min(PROD_COST_TABLE[Dates]),

    REMOVEFILTERS('Date'),

    PROD_COST_TABLE[DA_Est_Qty_Complete] >0

    )

VAR EST_EndDate =

CALCULATE(

    MAX(PROD_COST_TABLE[Dates]),

    REMOVEFILTERS('Date'),

    PROD_COST_TABLE[DA_Est_Qty_Complete] >0

    )

VAR EST_ProjectPeriod =

MIN('Date'[WeekEnding]) >= EST_StartDate

&& Max('Date'[WeekEnding]) <= EST_EndDate

VAR Actual_StartDate =

CALCULATE(

    Min(PROD_COST_TABLE[Dates]),

    REMOVEFILTERS('Date'),

    PROD_COST_TABLE[Qty_Complete] >0

    )

VAR Actual_EndDate =

CALCULATE(

    MAX(PROD_COST_TABLE[Dates]),

    REMOVEFILTERS('Date'),

    PROD_COST_TABLE[Qty_Complete] >0

    )

VAR Actual_ProjectPeriod =

MIN('Date'[WeekEnding]) >= Actual_StartDate

&& Max('Date'[WeekEnding]) <= Actual_EndDate

VAR EST_Actual_ProjectPeriod =

MIN('Date'[WeekEnding]) >= Actual_StartDate && MIN('Date'[WeekEnding]) >= Est_StartDate

&& Max('Date'[WeekEnding]) <= Actual_EndDate && Max('Date'[WeekEnding]) <= Est_EndDate

VAR RESULT =

SWITCH(

    TRUE(),

    EST_Actual_ProjectPeriod,3,

    Actual_ProjectPeriod,2,

    EST_ProjectPeriod,1

    )

RETURN

RESULT

[christinepayton]

You could create a dimension table with "enter data" to create the legend values you are using as rules, then relate it to the field you are using in your rules (or add a conditional column on the values in PQ) and drop it in the legend well. 

[SCNCKS1]

I don't see the legend well in the matrix visual or did i misunderstand your suggestion?