I always use hexcode even for basic colors. I didn't know I could just throw in the word and the site would use that. Violet and purple are pretty close to each other, so if they do notice they probably figure it's close enough.
I don't like reusing colors so I tend to look up individual codes for each character (when I use colors for text in the first place) that are readable on forums. So I usually end up with like color=#cf750f