1.4.11 if a button has a background less than 3:1 and no border does it pass

On the call "Example 3" on this page was presented as a pass of 1.4.11.
https://alastairc.uk/tests/wcag21-examples/ntc-focus-styles.html

 It confused me and I want to check my assumptions with others on our
current interpretation of 1.4.11. I would like to get others opinion on two
scenarios. Do these pass of fail?

1) a button has a background but it is less than 3:1 contrast  (no border).
The button text is 4.5:1 on the button background as per 1.4.3.
2) a button has a visible border and background but both are less than 3:1
contrast against the page color. The button text is 4.5:1 on the button
background as per 1.4.3

The text of the SC is this:
          Visual information required to identify user interface components
and states ... [has 3:1 contrast]

Is the text "Example 3" enough to know that this is a user interface
component without perceiving the grey background.
If Example #3 had a border less than 3:1 would it pass 1.4.11

My feeling is that the words "Example 3" is not enough to know that this is
an interactive control.  If an author is creating a background for a button
to indicate it is a button, doesn't that background need to meet 3:1?

And if an author puts a border around a button, doesn't that border need to
meet 3:1?

Whatever our consensus on what is necessary to know a button is an
interactive control, I'd like to make it explicit in the understanding for
1.4.11.

My interpretation is that if there is no background and border, then low
vision people have no disadvantage but if there is a visible border or
background then the SC kicks in and there needs to be sufficient contrast
in the button or border. What do others think?

Cheers,
David MacDonald



*Can**Adapt* *Solutions Inc.*

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