It's a pretty yellow with a touch of orange. It may be prone to crystallise on the nib, although it can be wiped away easily.
All photos are colour corrected with a grey card.
(Platinum 3776 Music nib, white copy paper)
(I don't have any similar yellow with me to compare. On Maruman looseleaf.)
(Golden Wattle, Seitz Kreuznach Kangaroo Yellow and KWZI Monarch)