Reseda luteola ((Reseda luteola, Dyers Weld) is one of the very less plants for a light- and washproofed yellow.
It gives a very shiny, almost neon, yellow.
For all other shades of yellow you can mix it with a bit of madder, coppersulfur etc.
Reseda do like hard water, give a bit of chalk into the dye.
Not suitable for consumption.