Here's Royal Blue on my eyeball. I think it's more of a bright cornflower colour than royal blue but either way, it's lovely.
I would definitely recommend picking up one (or more of these). They retail for £5.99 (although Superdrug online has them for £3.99 right now) and you can get them from Superdrug.
There's a list of vegan GOSH items HERE.
Have a great week all.
Love & Stuff