Re: [media-queries] and Ambient Light Sensor API

|  The level of contrast you want to pick for your web page 
|  should depend not only on the ambient light level, but also 
|  on the brightness of the screen. 
|  ...
|  Also, most web authors would probably have no idea
|  a which level of luminosity they should switch their styling.

Exactly. This is why I was proposing keywords. However a 
two-state filter can't make the trick here.

In my sense, we should at least support 4 keywords: 

    - In dark mode, you could switch to a white on black color scheme.
    - In normal mode, you could use the dark gray on white color scheme.
    - In bright mode, you could use black on white and remove gradients.
    - In washed mode, you could switch to pure black/white, use bolder font.

So something like : 

    @media (min-luminance: bright) { 
        /* remove fancy stuff to increase contrast */
    }

    @media(luminance: washed) {
        /* switch to black and white */
    }

François


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Visual representation of the proposed modes (no adaptation) :

   

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Visual representation of the proposed modes (some adaptation) :