Well this was the most tricky for me as I couldn't find a definitive Violet. I consulted some peeps on the forum and it seems that violet can be anything from deep purple to pale lavender. Anyway, in the end, thanks to Messrs Lee and Rosco I photographed some gels, put in the colour coordinates as indicated in PS and came up with this. It certainly kept me occupied for a couple of hours yesterday.
If I'd known violet was going to be so tricky I'd have changed the hue of my Blue image as it's very similar. The colours at this end of the spectrum do not seem to be as well defined as the others. Never mind.
Thank you for looking. This concludes my Spectrum series.
Specialist and abstract
Close-up and macro
Flash and lighting