Sorry for the slightly dark lighting. This is the only way that I can photograph these accurately.
As you can see, the colors are really close but not identical. OPI... Eurso Euro is a tad more red-toned as compared to Revlon Royal. Royal is also slightly brighter and more vibrant.
If I really have to choose between one of them (heaven forbid), I will go for Revlon Royal. It is more versatile - think jelly sandwich, etc! <3
Which do you prefer?