Snow isn’t blue because of the color of the light reaching it. For all intents and purposes, generally speaking, the light coming from (or through) the sky is white.Wikipedia snow field picture
Snow is causing itself to be blue, not the other way around.
http://www.webexhibits.org/causesofcolor/5C.html
This is why white cars are white. Bring a sheet of white paper outside and it is still white.
This is why I said most light sources are not blue. Outdoors, you are getting white light. Indoors, it most frequently ranges from white to yellow. And even when you do get a light that is casting more blue, it’s not as pronounced as in that picture (you can usually see the blue if you look at the light itself but hold a piece of paper a few feet away and the paper still looks 99% white). To get that much blue you’d have to set up a filter or go out of your way to find a lamp with an unusually blue emission (an LED perhaps).
This is why I tend to trust the light sources not be tinting things blue and I attribute the blue I see to the dress.
It might have been a different story had the dress shown a tint of yellow (not overly bright yellow, the kind of off-yellow you get with indoor lighting).
L. Spiro
Maybe our perceptional differences come just from different habitation. I have lived in small town at Finland most of my life and even at capital where I am living now most buildings are just 5th floor tall. Not much light pollution anywhere so you see lots of sky. Snow is every year thing there.
But another white material that has small blue tint from skylight.
First picture of White house from google search.
Edit: Picture from the snow was bad because scene was not in shadows and subsurface scattering is producing most of that blue. But any night snow picture would do.
