" Lobelia, Cambridge Blue"

Well I hope you all survived FRIDAY 13TH unscathed!
I'm still playing catch up! here I give you Lobelia which is in one of my hanging baskets! Can anyone tell me why its difficult to catch the exact colour of blue flowers?
I have tried to capture my blue Agapanthus and it keeps coming up almost white Im sure there must be some explaination, now don't go too technical as to why this happens!
Now, I will set my challenge to get todays on here, TODAY!
All have a good weekend!