I think the end result looks really effective, especially with how they blend so succesfully together.
After doing this we went back to our assigned colour. We had to pick an object that we thought had the purest tone and then create three gradients of hue, brighter and darker. This is our outcome...
We also looked into Pantone, here are my favourite Pantone colours for each...
Red: PANTONE Rubine Red M
Orange: PANTONE 137 C
Yellow: PANTONE 108 M
Green: PANTONE Green 0921U
Blue: PANTONE DS229-3 C
Violet: PANTONE DS164-1 C