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

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37
votes
6answers
8k 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 ...
1
vote
3answers
264 views

Should we use form button color to indicate task outcome?

I work in large company and We are building our UX guidelines for new applications. We have lots of legacy LOB applications with workflows that assign tasks to humans. Some of them are simple tasks ...
2
votes
2answers
130 views

What's your method for choosing button colors?

I realized this has been discussed in different threads, but often what I've found is the topic is segmented into only a couple of actions; i.e. Save and Cancel, or Positive/Negative relationships. ...
12
votes
3answers
1k 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?
4
votes
2answers
163 views

What is the best way to display disabled field and text for accessibility color contrast support

I am working on a project which needs to support color contrast accessibility. Currently on our system disabled data is presented as grayed-out, but now we need to support color contrast for ...
0
votes
0answers
23 views

Accessibility (color contrast) of report inappropriate function

I'm looking into color contrast issues at present, and have noticed a pattern where 'report inappropriate content' flags seem to all fail AA compliance. I wonder if the flag was targeted via ...
0
votes
4answers
60 views

Best way to differentiate “downloading content” and “downloaded content”

I'm working on an iOS app that lets users download and watch video content. In the playlist section I'm trying to find a way to clearly show what titles are being downloaded, and which ones have been ...
42
votes
12answers
12k 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 ...
1
vote
1answer
78 views

What color should be the color of unread inbox indicator?

Recently there was a request about changing the color of inbox unread inbox indicator to green, so it make me think: What would be the best color or for indicator of unread inbox messages (irrelative ...
0
votes
1answer
64 views

Show items related to selected item in list

I have a list on my UI. One item in the list is selected. Out of the remaining items, few can be related to this selected item and other may be totally unrelated. For example, Item4 is selected. No ...
0
votes
3answers
214 views

Website theme change checklist

We are adapting the current UI to the new look, by just changing the font/logo and some graphical images. Current Site Looks like Basically, I am trying to put all the changes in the document and ...
2
votes
4answers
194 views

Why does Google Calendar use a RED 'Loading…' overlay

I've noticed that Google Calendar uses a red Loading... overlay in the top righthand corner on Ajax actions (e.g. opening a calendar item): I know that Google, being Google, have redefined the ...
31
votes
6answers
38k 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 ...
1
vote
1answer
214 views

How to offer sorting on a color coded table?

Am using a table to display list of names/addr/etc along with colored backgrounds for 'verified','problem' and 'unclassified'. I've been asked to provide a means to sort by these three classes and am ...
0
votes
2answers
113 views

Best color to represent a price decrease or sale? [closed]

I work for a startup in the world of price tracking across multiple retailers. There's an internal debate at the company about color choices that represent a price that has dropped on a product. ...
31
votes
4answers
41k 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 ...
2
votes
3answers
74 views

Would it be easier to scan a list of grayscale profile pictures compared to colored?

Our search is giving a list of persons and their profile picture with some additional information, last updated, name & title. As of now, we are grayscaling the profile pictures, with full color ...
3
votes
3answers
404 views

Placement of Buy now/Download buttons

Hello respected UX community, I am working on a new website which will be used to sell a software application, but will also have a free limited version of it (not time limited, but feature limited). ...
12
votes
4answers
8k 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 ...
4
votes
4answers
450 views

What's the best way to represent a number which is over/under a reference?

I work with a resource management web application. I have a grid of numbers (resources forecasts). I need to show in this grid if the numbers are over or under a reference (resources capacities). I ...
1
vote
3answers
100 views

Should the “zebra striping” data grid set-order column be highlighted, or is it enough that little arrow?

[For PC applications (desktop and web)] As a common rule, when showing data grids, and sorting data through one of its columns, a little arrow appears on that column (sometimes also, the header ...
16
votes
6answers
2k 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 ...
14
votes
1answer
371 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 ...
0
votes
1answer
61 views

How to color curves in a Timeseries Chart?

I have a realtime timeseries chart which should show a variety of values. To make it mor clear: It should contain values for a solar park. Therefore I have stuff like Voltage, Current, Power (absolute ...
0
votes
4answers
69 views

Slightly dark frame on light content versus light frame on slightly dark content

I have a text area, and need to make its background color different from the surrounding background (frame, which has other object in it) color. I do not want to make their colors too different, so ...
1
vote
5answers
396 views

Basic color scheme for great readability

Are there any good recommendations for web site color scheme that provide good readability e.g. body text color (body) main heading color (h1) sub heading color(h2, h3 etc) background color border ...
5
votes
3answers
3k views

How to find a color scheme that's also useful when printed in black and white?

I'm looking for a 5 color color-scheme that also useful when printed in black and white, respectively gray scale. The colors should be easily distinguishable from each other. How can i do that?
5
votes
2answers
187 views

How should you create simple, color-coded graphics for color-blind people when the graphics are particularly thin?

I'm starting to make a Flash puzzle game, and I started thinking about how to implement a color-blind mode. (I know there's a game development SE, but this is a user experience question.) To keep it ...
1
vote
1answer
342 views

New Android UI color palette docs, don't understand some colors names (A100, A200…)

About color palette: Android UI Color Palette What are the color starting with 'A' (A100, A200)?
0
votes
1answer
187 views

ux color combinations [duplicate]

is there a library/blog/sites that list some sleek/modern color combinations ? It is hard to find any resources. Finding patterns of ux components is easy but color combinations are hard.
3
votes
3answers
179 views

Why hover colors are often inverted

Recently I see more and more websites using color invertion as a hover visualization. For me it's really annoying as I usually start to read the first few words and than hover over the line to have a ...
15
votes
2answers
765 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 ...
0
votes
1answer
168 views

Why does Google Spreadsheet not use the same colors on each computer when collaborating? [closed]

When you collaborate on a Google Spreadsheet, you find yourself speaking of other collaborators with their color (the blue one, the red one, the green one, ...), however, the colors do not match ...
1
vote
3answers
65 views

In a map routing application, what colors should the start and end point have?

We're designing a map applications that allows you to set starting and ending points to plan a route and we're not sure which colors to associate with the two markers. This is what we've got so far, ...
0
votes
1answer
118 views

Dark on light versus light on dark for command line and development tools

I've been reading the very useful information in these two threads: Dark or white color theme is better for the eyes What are the negative and positive aspects of dark color scheme I understand ...
26
votes
9answers
4k 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 ...
5
votes
4answers
640 views

What are good contrast colors for a GUI application

I am developing a GUI desktop application using wxPython. It is not a website or any web application. I have four boxes in my GUI. I want them to be distinct. Of course They have a different ...
47
votes
5answers
6k 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 ...
16
votes
5answers
1k 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 ...
10
votes
5answers
5k 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 ...
0
votes
0answers
67 views

why do nearly all website use gray text instead of true black? [duplicate]

Why do most websites (including this one) use gray text (e.g. #333333) instead of black (e.g. #000000)? Is it to prevent eye strain? Wouldn't true black offer better contrast, particularly for those ...
0
votes
2answers
91 views

Should color only be used to indicate interactivity and state?

I'm looking for the best practices of the use of color for elements in a responsive design which will be used on both desktops and mobile devices. I feel like there are three spectrums of thoughts: ...
8
votes
2answers
794 views

Colourblindness in design

I'm doing a little research to see how many people are affected by colourblindness to see if it is useful for our company to put some extra attention into our designs for those who are colourblind. ...
18
votes
11answers
3k 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 ...
0
votes
2answers
83 views

Is there any science way to find out the suitable contrast for text and background colour?

Here is the four text with different level of grey: As you can see, the first line is very difficult to read, and the last one is the best to read. So, is there any science number behind this ...
1
vote
1answer
191 views

Designing the UI of a chrome extension's popup

I just built a chrome extension for my college. It helps students know their total marks and % without manually adding their marks. The user doesn't interact with the popup. He only watches the ...
1
vote
2answers
270 views

iOS Color Picker User Experience

I'm creating an iOS game that allows the user to customize different parts of the main character with a color picker of three sliders. I'm wondering which would be better for the user experience, HSB ...
0
votes
2answers
89 views

Use of color for YouTube voting buttons

I am try to learn good UI design and have been looking through examples like YouTube to see how and why they do things. The design behind the voting buttons is confusing me. When the up vote button ...
24
votes
2answers
6k 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 ...
3
votes
1answer
434 views

How does Windows 7 Aero taskbar determine button hover-state background colour [closed]

This has intrigued me for quite some time. Does anyone know the algorithm Windows 7 Aero uses to determine the colour to use as the mouse-tracking hover highlight on taskbar buttons for ...