Violet tinge on blue LEDs

G12002

Newly Enlightened
Joined
May 14, 2010
Messages
9
My first post here.

Is it just my imagination or is there a sort of violet quality to those standard 470nm T1-3/4 LEDs? Lit alone in the dark they just look like a monochromatic sky blue but under daylight conditions or with flourescent energy saving lights, I could swear the cast blue light looks deeper and even purplish in some spots.

Try it yourself. What's causing the apparent hue shift?
 

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