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Re: Pixels vs points / contrast ratios

for

From: Karl Brown
Date: Oct 11, 2017 1:31AM


Thanks, Patrick. That all makes sense.

The designers/brand team won't be happy that one of their favourite
combinations isn't accessible at the sizes they're using it but that's why
I suggested they aim for 4.5:1 for all of them.

On Tue, Oct 10, 2017 at 1:06 PM, Patrick H. Lauke < <EMAIL REMOVED> >
wrote:

> A small addendum:
>
> “The actual size of the character that a user sees is dependent both > on
>> the> author-defined size and the user’s display or user-agent
>>
> settings. For > many> mainstream fonts, 14 and 18 point [pt] is roughly
> equivalent to 1.2 or > 1.5> em or 120% or 150% of the default size for body
> text (assuming that the> body font is 100%), but authors would need to
> check this for the > particular> fonts in use”>>> Am I right in assuming
> that large scale bold text would be 14x1.2 (16.8> pixels) and large scale
> non-bold would be 18x1.5 (27 pixels)?
> In most browsers, on default settings, 1em = 100% = 16px
>
> 1.2em = 16px * 1.2 = 19.2px
> 1.5em = 16px * 1.5 = 24px
>
>
> P
> --
> Patrick H. Lauke
>
> www.splintered.co.uk | https://github.com/patrickhlauke
> http://flickr.com/photos/redux/ | http://redux.deviantart.com
> twitter: @patrick_h_lauke | skype: patrick_h_lauke
> > > > >



--
Karl Brown
Twitter: @kbdevelops
Skype: kbdevelopment

Professional Certificate Web Accessibility Compliance (Distinction),
University of South Australia, 2015