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Re: Chrome color contrast analyzer Pixel radius

for

From: Kevin Prince
Date: Jan 10, 2016 4:22AM

If you have a block colour then pixel radius 1 is as good as any other however text is often presented in a smoothed manner by shading the absolute colour with lighter ones. This makes it both appear less blocky but also less intense. If you use 2 or 3 radius you'll get an average value which will be closer to the effective contrast between foreground and background.

Here's a pic I prepared for explaining just this scenario. It's showing a spot colour of 83,83,83 but if you move the block just 1 pixel to the left you are still in the letter form but the average value will be less and the overall contrast reduced.


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> On 5/01/2016, at 06:11, Alan Zaitchik < <EMAIL REMOVED> > wrote:
>
> Anyone know the answer to this one?
> Using the Google Chrome color contrast test there is an option to set the "pixel radius" to 1, 2, or 3.
> Anyone know which value to use under which circumstances? I have pages that fail with radius 1 but pass with radius 2.
> Is this bad or not?
> A
>
> > > >