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From: Peter Quale
Date: Thu, Jan 18 2018 9:27AM
Subject: Contrast Question for 1.4.3
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Apologies if this is covered in the list archives, but I did some searching
and can find nothing there, nor any concrete information in Google searches.

When a style sheet uses relative bold weights like 300, 500, 700, is there
a good number to assume a "medium bold" font is bold enough to only require
a 3 to 1 contrast? Of course, many thin fonts will never be bold enough,
but assuming we're using a typical monospace, solid font. Can one generally
assume 500 is officially bold and anything less is not bold?

I feel like I read a method of analyzing the area of a font and deciding
whether the surface of each letter sufficiently stands out from the
background. But I might have just dreamed that.

Thanks to everyone for their contributions to the list!

-Peter Quale

From: Beranek, Nicholas
Date: Thu, Jan 18 2018 9:32AM
Subject: Re: Contrast Question for 1.4.3
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Hi Peter, we interpret font-weight: bold to equal 700 and, therefore, require 14pt 700 for 3 to 1 ratio consideration.

The following link is a reference guide that should help you: http://htmldog.com/references/css/properties/font-weight/

Nick Beranek
Capital One

-----Original Message-----
From: WebAIM-Forum [mailto: = EMAIL ADDRESS REMOVED = ] On Behalf Of Peter Quale
Sent: Thursday, January 18, 2018 11:27 AM
To: WebAIM Discussion List < = EMAIL ADDRESS REMOVED = >
Subject: [WebAIM] Contrast Question for 1.4.3

Apologies if this is covered in the list archives, but I did some searching and can find nothing there, nor any concrete information in Google searches.

When a style sheet uses relative bold weights like 300, 500, 700, is there a good number to assume a "medium bold" font is bold enough to only require a 3 to 1 contrast? Of course, many thin fonts will never be bold enough, but assuming we're using a typical monospace, solid font. Can one generally assume 500 is officially bold and anything less is not bold?

I feel like I read a method of analyzing the area of a font and deciding whether the surface of each letter sufficiently stands out from the background. But I might have just dreamed that.

Thanks to everyone for their contributions to the list!

-Peter Quale

The information contained in this e-mail is confidential and/or proprietary to Capital One and/or its affiliates and may only be used solely in performance of work or services for Capital One. The information transmitted herewith is intended only for use by the individual or entity to which it is addressed. If the reader of this message is not the intended recipient, you are hereby notified that any review, retransmission, dissemination, distribution, copying or other use of, or taking of any action in reliance upon this information is strictly prohibited. If you have received this communication in error, please contact the sender and delete the material from your computer.

From: Karl Brown
Date: Fri, Jan 19 2018 1:19AM
Subject: Re: Contrast Question for 1.4.3
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Hi Peter,

For a little further clarity, 14 point at font weight 700 doesn't mean a
developer should go:

.class {
font-size: 14px;
font-weight: 700
}

Pixels don't equal points, as Patrick showed when I asked last year (
https://webaim.org/discussion/mail_thread?thread„18). 14pt bold would
still need to be about 19.2 pixels to use 3:1 contrast ratio and still be
compliant.


On Thu, Jan 18, 2018 at 4:32 PM, Beranek, Nicholas via WebAIM-Forum <
= EMAIL ADDRESS REMOVED = > wrote:

> Hi Peter, we interpret font-weight: bold to equal 700 and, therefore,
> require 14pt 700 for 3 to 1 ratio consideration.
>
> The following link is a reference guide that should help you:
> http://htmldog.com/references/css/properties/font-weight/
>
> Nick Beranek
> Capital One
>
> -----Original Message-----
> From: WebAIM-Forum [mailto: = EMAIL ADDRESS REMOVED = ] On
> Behalf Of Peter Quale
> Sent: Thursday, January 18, 2018 11:27 AM
> To: WebAIM Discussion List < = EMAIL ADDRESS REMOVED = >
> Subject: [WebAIM] Contrast Question for 1.4.3
>
> Apologies if this is covered in the list archives, but I did some
> searching and can find nothing there, nor any concrete information in
> Google searches.
>
> When a style sheet uses relative bold weights like 300, 500, 700, is there
> a good number to assume a "medium bold" font is bold enough to only require
> a 3 to 1 contrast? Of course, many thin fonts will never be bold enough,
> but assuming we're using a typical monospace, solid font. Can one generally
> assume 500 is officially bold and anything less is not bold?
>
> I feel like I read a method of analyzing the area of a font and deciding
> whether the surface of each letter sufficiently stands out from the
> background. But I might have just dreamed that.
>
> Thanks to everyone for their contributions to the list!
>
> -Peter Quale
> >
> The information contained in this e-mail is confidential and/or
> proprietary to Capital One and/or its affiliates and may only be used
> solely in performance of work or services for Capital One. The information
> transmitted herewith is intended only for use by the individual or entity
> to which it is addressed. If the reader of this message is not the intended
> recipient, you are hereby notified that any review, retransmission,
> dissemination, distribution, copying or other use of, or taking of any
> action in reliance upon this information is strictly prohibited. If you
> have received this communication in error, please contact the sender and
> delete the material from your computer.
> > > > >



--
Karl Brown
Twitter: @kbdevelops
Skype: kbdevelopment

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