Se vores store udvalg af nye produkter | Harald Nyborg

Værktøj: Håndværktøj, el-værktøj og inventar | Harald Nyborg

Alt til din have - indretning og redskaber | Harald Nyborg

Køb elektronik til altid lave priser | Harald Nyborg

Alt til sport, ferie, fritid og hobby | Harald Nyborg

Tilmeld dig vores nyhedsbrev her | Harald Nyborg

Boligartikler, husholdning og hvidevarer | Harald Nyborg

Outlet - restpartier og nedsatte varer | Harald Nyborg

Køb el-artikler, lamper og belysning | Harald Nyborg

Find en Harald Nyborg butik nær dig | Harald Nyborg

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

September 2025

August 2025

Harald Nyborg

Title / URL	Issues
Se vores store udvalg af nye produkter \| Harald Nyborgwww.harald-nyborg.dk/nyheder	3
Værktøj: Håndværktøj, el-værktøj og inventar \| Harald Nyborgwww.harald-nyborg.dk/vaerktoej	3
Alt til din have - indretning og redskaber \| Harald Nyborgwww.harald-nyborg.dk/haven	3
Køb elektronik til altid lave priser \| Harald Nyborgwww.harald-nyborg.dk/elektronik	3
Alt til sport, ferie, fritid og hobby \| Harald Nyborgwww.harald-nyborg.dk/sport-og-fritid	3
Tilmeld dig vores nyhedsbrev her \| Harald Nyborgwww.harald-nyborg.dk/nyhedsbrev	3
Boligartikler, husholdning og hvidevarer \| Harald Nyborgwww.harald-nyborg.dk/boligen	3
Outlet - restpartier og nedsatte varer \| Harald Nyborgwww.harald-nyborg.dk/outlet	3
Køb el-artikler, lamper og belysning \| Harald Nyborgwww.harald-nyborg.dk/el-og-belysning	3
Find en Harald Nyborg butik nær dig \| Harald Nyborgwww.harald-nyborg.dk/butikker	2

Ensure form controls contrast sufficiently with their surroundings

Harald Nyborg

Where this issue has occurred