Questions tagged [contrast]

is the difference in luminance and/or color that makes an object (or its representation in an image or display) distinguishable.

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6
votes
2answers
316 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 ...
6
votes
2answers
1k 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. ...
8
votes
5answers
2k 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 ...
27
votes
14answers
49k 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 ...
7
votes
2answers
11k 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
823 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 ...
31
votes
3answers
19k 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 guesses)...
4
votes
4answers
2k 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. ...
24
votes
4answers
6k views

How does use in bright sunlight affect how a web site should be designed?

We're building a mobile web site that will mainly be used outdoors in bright sunlight. What design factors should I consider?
9
votes
5answers
851 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 ...
7
votes
2answers
4k 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 ...
6
votes
2answers
202 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
331 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 ...
14
votes
4answers
7k 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 ...
140
votes
14answers
65k views

What are the negative and positive aspects of dark color scheme?

I am using Light-on-dark color scheme (dark background with light text) in my application. My question is, what are the negative and positive aspects of this color scheme and why this color scheme ...
11
votes
3answers
217 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 ...
12
votes
3answers
1k 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 ...

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