Strategic Planning | Tatiara District Council

Public Consultation | Tatiara District Council

Council Documents | Tatiara District Council

Council Meetings | Tatiara District Council

Contractors | Tatiara District Council

Depots | Tatiara District Council

Organisational Chart | Tatiara District Council

Council Services | Tatiara District Council

Your Council | Tatiara District Council

Aerodrome | Tatiara District Council

Form controls must appear sufficiently distinct from their surroundings, so that people 
with visual impairments are still able to clearly see them.    

Either the border or the form control itself must have a 3:1 colour contrast with the 
surrounding area. 

## Methodology

* All `<input>`, `<textarea>`, and `<select>` elements are checked.
* For `<input>` elements, these types are ignored as their
  appearance is controlled by the browser or operating system:
  `checkbox`, `radio`, `submit`, `reset`, `image`, `hidden`, `file`. 
* The flattened background color of the control is determined. This is the color of the
  control itself, combined with any parent elements if the control is transparent.
* If the control has a border or outline:
  * The flattened background color of each edge is determined. 
    This is the color of the edge itself, combined with any parent elements
    if the edge is transparent.
  * If any edge has sufficient contrast with the flattened background color of the control, 
    the control is considered to have sufficient contrast.
* If the control does not have a border or outline:
  * The flattened background color of the surrounding 
    area is determined. This is the color of the first control's parent element which is at least 
    one pixel larger around the element in every dimension, i.e. above, below, left, and right.
  * If the background color of the element has sufficient contrast with surrounding area color
    the control is considered to have sufficient contrast.

## Troubleshooting

There are some limitations to the contrast checker:

* The use of drop shadows, glowing effects, gradients, and other complex effects 
  mean there is no one clear color to determine the contrast ratio against. 
  In these cases, the contrast ratio cannot currently be determined.
* It is possible for an element to be positioned over multiple elements, e.g. via
  `position: absolute` or `position: fixed`. In this case, the contrast ratio cannot 
  currently be determined.

## Further reading

* [WCAG 1.4.11](https://www.w3.org/WAI/WCAG21/Understanding/non-text-contrast.html)

non-text-contrast

January 2025

December 2024

Tatiara District Council

Title / URL	Issues
Strategic Planning \| Tatiara District Councilwww.tatiara.sa.gov.au/council-documents/strategic-planning	1
Public Consultation \| Tatiara District Councilwww.tatiara.sa.gov.au/council-services/public-consultation	1
Council Documents \| Tatiara District Councilwww.tatiara.sa.gov.au/council-documents	1
Council Meetings \| Tatiara District Councilwww.tatiara.sa.gov.au/your-council/council-meetings	1
Contractors \| Tatiara District Councilwww.tatiara.sa.gov.au/council-services/contractors	1
Depots \| Tatiara District Councilwww.tatiara.sa.gov.au/council-services/depots	1
Organisational Chart \| Tatiara District Councilwww.tatiara.sa.gov.au/your-council/organisational-chart	1
Council Services \| Tatiara District Councilwww.tatiara.sa.gov.au/council-services	1
Your Council \| Tatiara District Councilwww.tatiara.sa.gov.au/your-council	1
Aerodrome \| Tatiara District Councilwww.tatiara.sa.gov.au/council-services/aerodrome	1

Ensure form controls contrast sufficiently with their surroundings

Tatiara District Council

Where this issue has occurred