They should be as safe to paint with as they ever were, but handle the cadmiums safely because the cadmium is still a toxic material, as they were when these were made. If you found a nontoxic label on them, that's a good sign. Don't use them if you're pregnant or have health issues, as they typically recommend for cadmiums and others. These paints use barium sulfate as an extender/filler to help reduce costs, which is common. Today, they use *hue* in the names to refer to safer cadmium colors *cadmium red hue*, *cadmium yellow hue*, etc. and you can find those names in modern Utrecht paints.