is the difference in luminance and/or color that makes an object (or its representation in an image or display) distinguishable.
5
votes
2answers
148 views
What is the validity of contrast and colours tests?
I just ran a contrast and colour test (using checkmycolours.com in this case) on our corporate site (www.dotblue.net; if you care) and it reports quite some failures. However, I explicitly optimized ...
5
votes
2answers
235 views
Stressless user experience for data entry forms
We're currently discussing a redesign of the applications we develop for internal use. Now, to change things for the better, we'd like to make as many UX considerations as possible before we go ahead. ...
5
votes
5answers
184 views
link color contrast with non-link text
I have read a lot about color contrast with regard to the text and background color (snook's tool), however is there a similar tool for validating the contrast of linked and non-linked text?
There is ...
5
votes
3answers
392 views
Is high contrast mode really useful?
In most operating systems and on some websites there is a high contrast mode, intended for use by visually impaired people. I have doubts, however, whether using such mode makes any sense - from what ...
2
votes
2answers
506 views
What is the difference between WCAG 2 AAA Compliant and WCAG 2 AA Compliant
I use a web app to check my site color contrast. Most of my color (Back/fore ground colors) are OK and I see YES inside textboxes except the one which refers to WCAG 2 AAA. What is it? What is the ...
5
votes
2answers
219 views
Standards for and measuring contrast of solid color fills
There are several questions on UX (e.g. here, here, here) already about contrast. However, all of those are about text, and the contrast between text and background, most off them referencing this W3 ...
13
votes
3answers
1k views
How many visually distinct colors can accurately be associated with a separated legend in a figure?
For charts and graphs it's a relatively common question by programmers to want to procedurally generate an arbitrary number of colors that are visually distinct.
Various research (or educated ...
3
votes
4answers
390 views
Best Way to Darken a Color Until it is Readable?
What's the best way to darken a color until it is readable?
I have a series of titles which have an associated color, but some of these colors are very light and any text drawn in them is unreadable. ...
9
votes
4answers
397 views
automatically calculate contrast
A user can change the default design of his site by selecting a color. This color is applied to the menu background color. The problem is that I have to change the menu text color depending on the ...
4
votes
2answers
613 views
Tablet interface design when used outdoors - handling bright light
I have a line-of-business tablet application that is used outdoors day and night in a vehicle. One of the users recently provided feedback that they find it difficult to read the screen when wearing ...
5
votes
2answers
108 views
Is it good practice to have a change contrast or higher contrast buttons for users?
Is it good practice to have a change contrast or higher contrast buttons for users?
As depending on the vision problem users may need different contrast conditions for comfortable reading. Some sites ...
1
vote
4answers
247 views
Is this contrast readable?
On this oh-so-slowly-developing page, there is the column headed "Bid x Ask", which reflects the numbers of bids and offers on the stock option in the row:
Are the numbers here readable? How can I ...
5
votes
4answers
1k views
Choosing high contrast text color (in relation to background color) dynamically
My application has an area with some number of controls. Each control's background color expresses a state of some sort. The controls are also numbered via some text in their foreground. For ...
11
votes
3answers
85 views
What screen contrast should a design be optimised for?
I'm in the process of working with our designers to come up with a graphical treatment for a comparison results table. We will produce a design, and then receive feedback from the business that they ...
9
votes
3answers
420 views
Choosing colors for a subtle UI
I'm currently agonizing over how light I can make various colors in my UI before I adversely affect usability. The reason for the agonizing is that different monitors have different responses. Those ...
