No matter what colour you have - the flowers will alter depending on how mature they are, what the conditions are like, and whether the plant is in a sunny or a shadier site. Sun will tend to fade the stronger colours quite considerably. Young flowers on a plant are often quite different from from older ones too.
It's a place where beautiful isn't enough of a word....
I live in west central Scotland - not where that photo is...
Are you dead set on a clematis, or will another blue flower do? My penstemon are the most electric shade of true blue fading to purple.
If you're set on a climber, there are a wide variety of blue morning glories. Annual, but vigorous.. and they reseed fairly well in the area they were grown in previously. Bit like nasturtium do.
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I have one called 'the president' and it looks like this:-
i mean the most like a true blue rather than a violet/lavender/etc
Young flowers on a plant are often quite different from from older ones too.
I live in west central Scotland - not where that photo is...
If you're set on a climber, there are a wide variety of blue morning glories. Annual, but vigorous.. and they reseed fairly well in the area they were grown in previously. Bit like nasturtium do.