I am wondering where I could find the RAL color code for the paint color on a 1969 Saab 96 (V4).
I'm assuming that you want part of the car (or the whole car) repainted and thus need the RAL equivalent code?
It might not be a RAL colour, but a paint supplier that's been around for a while might still have the mixing instructions.
That said, if you're looking at getting a partial repaint, the colour code isn't going to help you much - paint fades over the years and you're not going to get a match. The best case for this scenario would be to take the car or a part thereof to a paint shop or paint supplier than can use a spectrophotometer to analyse the paint and mix accordingly.