the visual perceptual property corresponding in humans to the categories called red, green, blue and others

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88
votes
14answers
11k views

A UI/UX developer with color-blindness. Good or Bad idea or maybe a challenge?

I'm working as a front-end developer. I used to work on JavaScript technologies. But when it comes to UX and about choosing colors and stuff which I'm not able to understand well due to color ...
73
votes
10answers
6k views

What effect would a grayscale color scheme have on UX?

I am thinking of designing a website that will have no color other than black, gray, and white (including links). Will the absence of colors such as blue, green, etc. affect the user experience of ...
66
votes
12answers
27k 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 ...
56
votes
9answers
14k views

Is there a problem with using black text on white backgrounds?

Why do a lot of websites use a text color other than #000000 black when the background is white? For instance, this text will be displayed using a dark grey: .post-text { color: #333; } Have ...
55
votes
5answers
108k views

Dark or white color theme is better for the eyes? [duplicate]

This is not a programming question, but it concerns the programmer itself. So I don't know if it really belongs on this site. But my question is: what is better for the eyes, a dark color theme or a ...
51
votes
5answers
7k views

Why is blue used as a background color to indicate no signal?

To my knowledge most projectors' "No Signal" screen uses a blue background: This might also apply to the legendary Blue Screen of Death So why is blue the color of choice for such error ...
51
votes
5answers
72k views

What is the best color combination for on screen reading?

I work at an airline as a pilot and I am involved in the "paperless" project which aims to have no more paper in the cockpit - all the data should be accessible from tablet devices. We have a lot to ...
48
votes
13answers
7k views

What are good colors for illustrating Up and Down?

Imagine a curtain, and two strings. Pulling one string brings it down, pulling the other brings it up. Usually in office environments, these two strings are the same color and this makes it so users ...
47
votes
12answers
86k views

Why are Inverted Colors considered an accessibility feature?

Why is it that in most Operating Systems the "Inverted Colors" display setting is considered an accessibility feature? Both Windows and OS X includes this option so it seems to be a recognized ...
44
votes
14answers
9k views

Best color to display hot/cold but also on/off

I'm not really sure about some colours of one section of the application I am writing. Basically, I need to have a section that displays if something is ON/OFF, but also HOT/COLD. Now, usually, I ...
43
votes
6answers
3k views

How can I highlight errors when bright red is the main color of the brand?

I'm working on a mobile website for a client whose main brand color is red. The website header and headings are all red. CTA buttons are red too. How can I effectively separate errors (mostly in form ...
38
votes
2answers
3k views

What rules does Google use to make a button gray, blue, or red on their sites?

This has been an elusive topic, and I haven't yet been able to form my own conclusion about what Google's reasoning is to make a given button blue, red, or gray, given their latest design ethos. Take ...
29
votes
2answers
9k views

Is the color red really appropriate for form validation errors?

It seems to be taken for granted that the color red is appropriate to highlight errors. In the case of serious system errors, I agree. However, I'm having doubts that it's the right choice for user ...
27
votes
9answers
7k views

Dark on Light or Light on Dark? [duplicate]

For a very technical site documenting code, sharing code snippets, and documentation, I have been told that using dark fonts on light backgrounds is recommended for people being able to read the ...
26
votes
5answers
2k views

Displaying states of machines – Overview site

We need to display the state of some machines in our web application. The machines can have about 8 different states. Our idea is to make a site where the user can see all machines and their state. ...
26
votes
7answers
3k views

What is the reasoning behind grayscale icons?

Quite a few web applications have started utilizing gray(black) scale icons, for example Github,new Google Analytics, etc. Even applications like Firefox 4, Chrome, IE9, iTunes, Mac OS, have dropped ...
25
votes
5answers
6k views

Choosing a set of colors

I'm not a graphic designer, and I can't afford one for my open source project, so I thought I'd crowdsource this one. I'm trying to work out a set of 6-8 easily-differentiable colors for categories in ...
25
votes
8answers
10k views

Should hyperlinks be blue?

I've built a site where all hyperlinks have the default colors: blue for links, purple for visited links. They turn red on hover. I believe that always using blue for hyperlinks is a good thing, so ...
25
votes
9answers
10k views

What are good resources for testing UI design for color-blind users? [duplicate]

Possible Duplicate: How can I check if my user interface is suited for colorblind people? I'd like to ensure that color blind users experience the UI with sufficient contrast between ...
23
votes
5answers
3k views

Color choice for maximum legibility of text on glass

In our office we have transparent glass doors and we want to put text stickers on them. For example, name of the person or room function. The question is what color should be stickers to provide ...
23
votes
3answers
3k views

Should I switch to a dark theme UI if the app is used at night?

Should I dynamically change the theming of my application based on ambient lighting? My app will be used in bright daylight, as well as in a dark movie theatre, or may be opened at night. I ...
23
votes
5answers
2k views

Should a multinational website background color be a conscious choice?

We know that colors represent different things in different cultures, and selecting the wrong color can have unexpected and unwanted effect on how we present our organization. Gaming sites such as ...
23
votes
3answers
9k 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 ...
19
votes
7answers
2k views

Is it a bad idea to use grey buttons?

Our design team is thinking of using grey secondary buttons on our site. I'm concerned they may appear to be disabled to our users (especially when used with the primary orange buttons). There is a ...
19
votes
4answers
951 views

Dark screens in cars

I am a designer just preparing an app for the "in car" area. Normally we have a bunch of colors to use and we usually use dark colors on a light background. Now our client came up with some question ...
18
votes
11answers
4k views

Is red an acceptable colour for a submit button on a form for a purchase or booking?

I have been drafted in to provide UX feedback on a recently completed website. One point I made was that red was not a suitable colour for a positive action, i.e. completing a form. The reply cited ...
17
votes
12answers
3k views

Is this hard to read?

This is a snippet on a site i have just been building. I considered the readability etc, and the corporate colours, and tried to work with them. Actually, I find it quite relaxing to read and view, ...
17
votes
6answers
1k views

Is flashing red text a good idea for denoting an active alarm?

I'm working on a windows application that is showing the realtime status of a particular piece of equipment. While operating the equipment (via the application), two important values & labels are ...
17
votes
10answers
1k views

How much color may a UI have?

I work on a Network management system (NMS) frontend. Basically this app shows a list of alarms, updated in realtime. Such NMS apps already exist in a large variety, but two things they have in ...
17
votes
2answers
5k views

Having 4 colors in logo, like Google, Microsoft and eBay, For which kind of companies does work too? [closed]

In Google , Microsoft , eBay and some other corporate companies , they use 4 colors in their logos. Blue,Red,Green and Yellow. How does it help their branding? and for which kind of companies does ...
16
votes
2answers
1k views

Should punctuation at the end of a sentence be bold, emphasized, or colored?

I've worked with both a designer and an editor on a project which required their mutual agreement. One of their differing points was about whether or not punctuation should be bolded, italicized. An ...
16
votes
6answers
6k views

Monitors display more colors than human eye can distinguish

The human eye can differentiate about 10 million colors. A 24-bit display mode can produce about 16 million. Why, then, do operating systems have 32-bit and higher display modes if the apparent ...
16
votes
2answers
879 views

Is there research supporting the link between colors and emotions?

I recently reviewed a style guide document and came across a passage concerning colors. In the text, different colors are attributed to different emotions, e.g.: Orange stands for lust for life ...
16
votes
4answers
1k views

How important is it to consider color for color blindness in a design

In response to this question about iconography, I was wondering about how much it is necessary to factor in color usability for people with color perception difficulties into a design. The first ...
15
votes
8answers
916 views

How to determine whether links have enough contrast?

I find it very hard to distinguish links from normal text on Programmers Stack Exchange, especially visited links on wall-of-text posts. The colour scheme used is: Background #fafafa (there's a ...
15
votes
1answer
2k views

Are there premixed Material Design color combinations I can use for prototyping?

I'm looking at this tool that allows to select material design colors and this document by Google that describes how to pick material design colors. As far as I understand, I pick 3 primary colors ...
15
votes
1answer
568 views

Measuring how easy it is for a humans to distinguish two colors

From looking at the Hex values green "008000" and forestgreen "228b22" seem to be more different from each other than seagreen "2e8b57" and forestgreen "228b22" If simply add up the difference by ...
14
votes
2answers
814 views

Why print the text of a color name in that color?

The other day I was driving behind a bus and it had a sign on the back that read "This vehicle does not turn on red" and the word "red" was colored red while the other text was black. Is there an ...
13
votes
8answers
2k views

Intuitive colour pickers for non-expert users?

Does anyone have examples of favourite colour pickers (as UI elements, not dedicated color-picking apps or sites) for common, 'everyday' colours - not for RGB or HSL values? I find traditional colour ...
13
votes
8answers
3k views

Which is a good color for a pause button?

We have an application with a built-in stopwatch. If the stopwatch is running the pause button is shown and if it is stopped the play button is shown. Currently the stopwatch itself as well as the ...
13
votes
5answers
2k views

Which color for a “Pay now” button?

I know there is no such thing as one good color that can be universally accepted, but I've been told orange is the "right color" for the payment button, and it is notable to see how both Paypal and ...
13
votes
2answers
736 views

Is there a 'science' to what colors to use on primary 'call-to-action' buttons?

I was wondering what research I can find on what colors to use for primary 'call-to-action' buttons. I know the size of the button and the contrast it has in relation to its background play a big ...
12
votes
4answers
19k views

How to best communicate color names to users more clearly

Many times in using general color names in communication, i.e. Red and Green, users are confused when the color is a non-pure form of the color. For Example, in referring to the Red-ish color of the ...
12
votes
3answers
2k views

Why is the close button in the title bar red in Windows 7?

Perhaps to prevent users from closing the window or application inadvertently? But is it also a distraction because the color of red stands out? Any insights?
12
votes
6answers
1k views

full-color icons vs. greyed-out icons in menus

Icons in menus are often full-color. Even though the page an icon/menu item controls is not active, the icon still appears in its normal hues. To distinguish the icon which is active, a designer will ...
12
votes
2answers
989 views

Why do the iPhone and iPad keyboards use different shades of gray for the keys and background?

I noticed when working with iPhone and iPad keyboards that they are quite a significantly different colour: Is there any particular reason for this?
12
votes
2answers
2k views

Should websites provide high contrast or alternate schemes?

With regards to Accessibility, many sites focus on font-size adjustments either the browser's / OS's native controls or via a control on the page (usually denoted by 3 capital A's of varying size). ...
11
votes
4answers
4k 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
4answers
475 views

What research, patterns or techniques will help me choose the correct colors (or saturations) to the various UI elements of a page?

I am building a tool that will be used by call center agents. It is to help them support products on behalf of the customers who call up. It acts as a portal to many different types of product ...
11
votes
5answers
8k views

Why do most financial apps use a black or dark background?

I was asked today to look into designing a stock monitoring windows 8 application and I was looking around for design ideas when I noticed an interesting trend where it seems like most of these stock ...