A deep yellow, mixed from three paints: Cadmium Yellow, Ultramarine Blue and Quinacridone Magenta.
Drag a bar to change how much of that paint goes in, and watch the colour change at the top.
Parts are a ratio: a drop, a spoonful, whatever suits the amount you need.
Metallic gold needs mica or metal pigment; no mix will shine. This is the flat colour of gold, the base painters use under highlights.
The library and every recipe here are mixed from just these.