Questions tagged [color-perception]

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Are there any existing algorithms to measure the readability of text and background colors?

Are there existing algorithms that can measure readability colors for text over a background? (on-screen text for e.g.). Something which could be used (for example) for auto-generating color schemes ...
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5 votes
1 answer
188 views

Does Wordle's high contrast mode confuse the meanings of the colors for colorblind users?

The popular word game Wordle, includes a high contrast mode in the settings for "improved color vision". It turns the usual green and yellow color cues into more contrasting orange and blue. ...
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1 vote
1 answer
154 views

How dark does a background have to be before white text shows up better than black text?

How dark does a grey background have to be, before white text is easier to read against that background than black text? Suppose you start off with a white background. Clearly, black text is easier ...
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17 votes
4 answers
2k views

Why red and blue boxes in close proximity seems to shift position vertically under a dark background

For me (wearing glasses) the red box below appears to be slightly above or below the blue one, depending the angle I'm viewing it. Some of my colleagues don't see it and some do. Not all wear glasses. ...
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5 votes
3 answers
262 views

Are there current standards or guidelines regarding dark themes / dark modes?

Many people are starting to realize that they prefer what is commonly called "Dark Mode" or "Dark Theme". That is, light text on a darker background. As such, developers are now ...
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2 votes
1 answer
148 views

Recommended color range for background color

I am building an online menu for restaurants. The default background color is a light gray (#f1f3f5). The default text color is black (#555555). Example Many of the restaurants have asked to use a ...
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3 votes
3 answers
135 views

How to inform the user that the number shown in a list is incomplete or might not be current?

Consider this card shown below: It's a card with a list view showing the total income by teams. Now most of these teams have secondary teams under them. And many times the actual number of one of the ...
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0 votes
1 answer
451 views

Usage of colors and background - Header and Footer | eCommerce

Are there any key UX research references for the usage of colours on an ecommerce website? Looking for any research data so that we can make objective decisions. Our brand colour is a Deep orange and ...
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32 votes
10 answers
9k views

What is the color associated with lukewarm?

I'm designing a web application that crowdsources user response to another user's initiative (or project idea). The overall user response to the initiative is represented using a status component with ...
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  • 423
34 votes
11 answers
14k views

What is the color of artificial intelligence? [closed]

What is the color of artificial intelligence, or the color which represents AI in the eyes of general public? What is the reason for that? Is there any sociological research on this or related topics?...
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1 vote
2 answers
180 views

Adjusting for color difference between monitor and TV

I am creating a UI, but there is a large difference between the colors that I can see on my monitor, and my TV. Is there a way to adjust for the difference between what I see on my monitor and my TV? ...
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  • 111
1 vote
1 answer
119 views

potentially color-blind person: how to choose colors for a graph [duplicate]

I have a chart with 5 curves (curves 1-5). A person told me that colors 1 vs. 2 as well as colors 3 vs. 5 are difficult to distinguish. While I can understand that 3 and 5 are somewhat similar, the 1 ...
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  • 111
5 votes
2 answers
477 views

Can palettes be unambiguous for colour blind users?

I am making design recommendations for a piece of software that wants to accommodate entirely illiterate users. A suggestion that has been made is to assist these users by employing "color coding" on ...
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  • 377
4 votes
2 answers
751 views

How can I validate website color scheme?

A friend of mine asked me to validate the color scheme of his revamped website. The color was chosen by (non-technical) top management and it doesn't follow a modern color scheme. Is there any way ...
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3 votes
2 answers
322 views

The Psychology of Colors

I have a few categories in my application regarding the various needs/dimensions of human lives such as health, social services etc. I am not sure which color would best represent each category. Could ...
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2 votes
1 answer
83 views

Seasonal response to app color schemes

As I get ready to launch my mobile app I am in the process of reviewing a number of UI/UX issues. The app in question is broadly best described as a "shopping app". I find myself wondering - are ...
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3 votes
3 answers
3k views

Alternatives for red/green in diff output

I once read an article arguing that red and green are bad choices for diff, because some people have red-green color blindness red implies "bad" and green implies "good", but deleted code is often ...
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9 votes
2 answers
491 views

Why a color picker offers almost identical swatches?

Perhaps the first example I met was in Windows many years ago and is still with us: Pairs of swatches I connected with red line* are nearly indistinguishable. The same in color comb.          *) ...
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2 votes
2 answers
362 views

Colors signifying positive, false negative and false positive

I am given text span ranges (start and stop) for a specific paragraph from two separate APIs. One API has the spans as defined by a human while the other is defined by a machine. I essentially need to ...
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4 votes
2 answers
3k views

Why colors are set to high saturated in most smarphones?

From the very first time of buying android smartphones, we see those colors which are less realistic. Only few percentage of people change it by going deep level down inside settings. Why it is set ...
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1 vote
2 answers
107 views

How can I find a color scheme that is appropriate for color blind persons?

I need to highlight an item in a toolbar with a color that is distinct from other colors that are already present. This accent color will be used in any currently selected item, row, or other item ...
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1 vote
3 answers
108 views

Read/Write from device icons

I want a read and write to device icons -- in this case RFIDs but that should not matter at all. There generally tends to be an arrow to (write) and an arrow from (read) but what about specific ...
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4 votes
3 answers
1k views

Icon coloring for color blindness

I have scenario where there are 2 icons(Check and Exclamation) with 4 states.The colors of the icons changes on following scenarios State 1 - ! - Grey (Configuration is missing,has content) State 2 -...
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8 votes
3 answers
9k views

Grey versus white background for ease of use and readability/legibility

Many websites by default use a white background for maximum contrast (with black text) so I am wondering if there is a case for a very light grey background to be used instead because it comes up as ...
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4 votes
4 answers
4k views

Mobile Chat UI - Color of the bubbles

I'm wondering why in most mobile chats the message I write has a color background and white text (example: blue background and white text, like facebook) and the response is on grey background with ...
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3 votes
2 answers
564 views

What are the best practices for developing a website for older (65+) audiences? [closed]

I'm creating a landing page aimed at 65+ year old demographics in the US. What are the best practices for creating web pages aimed at that audience? Are there special fonts, font size, color palettes ...
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13 votes
6 answers
11k views

How to measure the contrast between any given color and white?

When displaying white text on a colored background, I guess that the text is more-or-less legible depending on some kind of contrast between that color and white. My question is, is there a formula to ...
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  • 276
2 votes
2 answers
89 views

Colors on digital platforms as per time/season

Is there any research/article on colors good for particular time of day or particular season? I am in need of something which can atleast guide me in the direction and if I don't find much work on ...
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21 votes
6 answers
4k views

Is a grayscale bar a bad way of showing temperature?

In my office there is an air conditioning unit that has a knob that adjusts the temperature with a grayscale bar with the shades getting darker from left to right above it but no other indication (...
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  • 313
2 votes
3 answers
298 views

Altering the text color by paragraph?

I've been thinking about changing my application so that the font colour alternates between black and dark grey on odd and even paragraphs. I thought of this because it often takes me a long time to ...
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  • 268
2 votes
5 answers
212 views

Colors to mark items, what about black and white items?

We build a transit app, and want to use colors to denote train lines (that match with the train companies' descriptions: yellow line, blue line, etc). So we came up with the screenshot attached, very ...
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  • 245
1 vote
3 answers
237 views

Do natural colour schemes work better with the human brain? [closed]

Does colour matter? I work for a company that uses 3 very unnatural colours as the brand colours. I want to test a theory that because these are such an unnatural colours not seen anywhere in nature ...
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14 votes
4 answers
3k views

Does dark colour affect user's trust?

I have used a black header on an online shop because it is a common colour for the subject but I didn't realise that it may affect user's trust. Is it recommended to use bright colour ? Have you ...
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16 votes
1 answer
1k 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 ...
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  • 566
0 votes
4 answers
177 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 ...
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  • 587
6 votes
1 answer
2k views

How much darker should yellow be get the same contrast as other colors?

By how much should the color yellow be darkened to get the same contrast values as other colors displayed on a computer screen? This is something that i would do by sight, but i was wondering if ...
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  • 163
2 votes
2 answers
443 views

Why is red associated to greatness in some websites?

I have been lately wondering why some websites who rank products associate the red colour to being good and green with being bad. Isn't red usually associated to danger or to something you want to ...
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5 votes
3 answers
1k views

Allow users to change text and background color in my web app?

Background: I'm building a basic web app that's targeted toward (wait for it) academics. The app is entirely text-driven, and will not involve any images. It will incorporate some databases and longer ...
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2 votes
2 answers
630 views

From an accessibility perspective, is it alright to use blue text for headings?

Since most people associate blue words/phrases on a webpage with hyperlinks, I know it's a bad idea to use blue text to provide emphasis on a word or phrase within a paragraph. However, does the same ...
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4 votes
3 answers
554 views

Best Practices for call to action buttons on non e-commerce site?

I am designing a corporate website for a software company, with primary colour scheme comprising of red, black and white. Breaking away from this colour scheme will just look wrong, and I do not want ...
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  • 1,157
1 vote
2 answers
117 views

Correction in color model

In HSL color model, I have a subjective feeling that there is interaction between saturation and lightness. That is, as the lightness becomes close to 0 or 1, we need a larger value of saturation in ...
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  • 587
2 votes
3 answers
1k views

Active vs inactive colors when switching between table views

I have been working on a web application where users get assigned to specific clients, so by default the can only see theirs. However occasionally they might need to access other users clients as ...
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5 votes
4 answers
3k views

Which map background color is best (from the perspective of ergonomics at the workplace)?

Which map background color (white, black, other?) is best from the perspective of ergonomics at the workplace? Certainly aspects play a role such as reflections, tiredness of the eyes, contrast and ...
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  • 151
-1 votes
2 answers
309 views

What's the best color to represent authorization? [closed]

I need to represent a color for authorization, right now I have a green like #8CBE29 but does not conbine with the other colors on the table
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9 votes
7 answers
2k views

Is it wrong to have your primary actions in red?

We're using red as the colour for primary Actions. This can be in the form of a button. In terms of usability, what are the downsides. Are there any upsides at all? An example for using red coloured ...
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14 votes
4 answers
29k 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 ...
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  • 240
1 vote
3 answers
366 views

Different colors on different screens [closed]

I'm making a background image for a PDF document. I have just realized that the same jpeg background looks really different (different colors) on different screens. Is there a way to avoid this huge ...
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4 votes
2 answers
3k views

Reason that most (business) applications have a blue theme?

Most applications use blue as their central color, particularly business applications (e.g. Windows uses blue in most of it's chrome). I am being pushed to use purple throughout our current ...
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3 votes
3 answers
285 views

Marking tasks in red?

There's a list of items, some of them require attention. I'm thinking about using the color red. It used to be used for errors, so red was an unpleasant color. Today we have red notifications on iOS ...
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  • 952
2 votes
3 answers
1k views

Blue or red color for counter of new messages?

I'm trying to implement an inbox for users and there is an indicator in the site that shows you how many new messages you have. When I use blue for notifications it nicely fits in the site, and red ...
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  • 1,002