Let’s be honest, there are not enough different colors in the world in order to let brands create their unique identity. I think there are around 20 common colors we can actually name and recognize, while on the other hand there are hundreds of thousands of brands trying to create their own unique identity. You can’t choose blue because Facebook already did, so you try a different blue and you realize that Twitter took it. Not enough colors for everyone. 🤷
That’s where gradients change the game. Designers can fade multiple different colors and the use of gradients actually adds a lot of more options to the amount of “tones” available. The amount of brands that use a “Blurple” (a gradient between blue and purple) is really small, so that gives brands the opportunity to obtain a unique color identity.