This is a color chart I painted some 20 years ago, on a piece of wood, with all the acrylic colors I had at the time. It's survived several moves, gathered dust on a shelf, and sat neglected in a drawer. The information on it is still valid though.
Each color swatch has the name of the color written at the top in pencil. (If I did one today, I'd also include the color index numbers.) There are three values of each: straight from the tube, a touch of white, and a bit more white.
I don't recall why I painted a few extra greens at the bottom; possibly because the green in the color triangle is so hideous. A dull purple too, and I should've made a note of which colors I used.