HUD DrawMaterial only produces black rectangles

I’m trying to draw a simple rectangle on my HUD using a material. I’m using the DrawMaterial function in the HUD blueprint, but all I ever get is a black rectangle. I’ve tried using a number of different materials including ‘M_Basic_Wall’ and they all come out black. What’s wrong?

Hello,
Try to set your material translucent and use emissive color instead of base color input. More explanations with visual example : When using Draw_Material_Simple node why am I getting a black square? - Rendering - Unreal Engine Forums

You beat me to it. The material emission needed to be set.