A1_45825c_2500 
There are many shades of red, but this rose is most definitely scarlet.
There are a lot of names for shades of red, like carmine, claret, and crimson, but few as evocative as scarlet. This rose is the very definition of scarlet.
I was glad the sunshine was bright enough to do this rose justice.
This image shot with the Sony 135mm GM lens on a Sony A1, at ISO 100 f/8 1/125.