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Why does we see sky like blue in maximum time?

We know violet has less wavelength, so we should see sky like violet. My assumption is that, violet is not primary color and not sufficient in the spectrum so we see blue because after violet, blue has the shortest wavelength?

Edit: Because our eyes have sensibility for three primary colors so we may see primary color most but, If a people is blue color blind then what sky color will he see?

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marked as duplicate by Waffle's Crazy Peanut, Chris White, Emilio Pisanty, Qmechanic May 22 '13 at 20:41

This question was marked as an exact duplicate of an existing question.

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possible duplicate: physics.stackexchange.com/q/17 – Michiel May 22 '13 at 16:13
    
The first question already has an answer (see michielm's comment), the second question is more a biology (specifically psychology) question..! – Waffle's Crazy Peanut May 22 '13 at 16:18
    
But I think 2nd question is bio-physics related. – Physics_guy May 22 '13 at 16:19
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possible duplicate of Why is the sky not purple? – Chris White May 22 '13 at 16:27