The male doesn't seem to be opaline spangle, but it's difficult to tell with the crest. Do you have a picture of his back?
The male appears to be sky blue single factor spangle, double factor yellowface type II with a full circular crest.
The female seems to be cobalt single factor creamface (yellowface type I) since her yellow is significantly lighter, but it is also possible she could be double factor yellowface type II.
Crest genetics are complicated and a mode of inheritance hasn't quite been established yet, but normally breeding a crested with a non-crested results in some crested young.
Seeing how the male appears to be double factor yellowface type II, all the chicks should be single factor yellowface type II. Half should have the female's creamface genes.
25% chance of cobalt spangle SF YF II
25% chance of sky blue spangle SF YF II
25% chance of normal cobalt SF YF II
25% chance of normal sky blue SF YF II
I hope this helps.