 So here we've got a thalo blue with a green shade, quinacridone red and a hands yellow which is a light version. Ideally to get a real the blackest black you could use a hands yellow medium but this will get us pretty close. So you can mix these in any any way you want really but I'm just going to do it mixing with the thalo blue and the quinacridone red first. So this is a very strong tinter so we're not going to need as much. So this is the Mars black just so you can see them next to each other in comparison. So this is slightly darker I mean this is you know slightly bluer so I could add you know a touch more of the red and a little touch more of the yellow. This version you see has a very blue undertone in comparison to the premixed black. Another way to make a chromatic black that is a black that doesn't contain any of the PB you know black pigment in it is to use a thalo green and a quinacridone red. Gamelin the paint manufacturers make an actual black premixed with these together and you can be very handy for tinting colors down because it's got quite a neutral tone to it. The only problem with it is is because you're using a thalo green and a quinacridone red which are both very transparent pigments if you look say there at their quinacridone you see how transparent it is it's good for tinting colors down but not necessarily good for coverage. If you look at the Mars black it's very very opaque very good for covering things so you've just got to pick the right black for the right part of your painting or to decide what you're actually trying to achieve with the painting.