I am not an expert to give an authentic answer for this question. One thing I understand is some colours are comfortable for our eyes. If the colours are not ideal, eyes may have some sorts of strain. The human eye is said to focus best on red light and most sensitive to shorter wavelengths like blue.

Different situations and different colors for eyes:

As a background color --- red seems to be good for your eyes.

Blue color --- is an extremely soothing color as it is light and extravagantly so.

Brown color --- seems friendly and has an essence that seems friendly ---having an earthen element on the table soothes the eye especially when it is strained due to over viewing of the computer.

White color background --- is good and the best --- has always been used to describe and denote peace --- one of the best combinations for the eye.

Green --- gives a freshness ---

For more details, see link

http://www.boldsky.com/health/wellness/2014/colours-that-are-good-for-the-eyes-040074.html#slide39729

What is 'good for your eyes' from a biological point of view? 

Colors influence feelings, independent from the statement 'good for your eyes'?

Dear Marcel,

It depends on the circumstances. If there is cold, red, brown and yellow (“warm colours”) may help you to impress warmness. In hot conditions, blue and green, the “cold” colours can help. If you are nervous, the green can decrease your turbulence.

Colour vision is a result of cone cells. People with normal vision have 3 cone cell types: red, green blue. Of the 6-7million you have, 45% are green. Therefore, your eyes need to work less to perceive colour. Dark greens (pine tree green) are one of the most relaxing colours.

http://www.quora.com/Why-is-looking-at-greens-supposed-to-be-good-for-your-eyes

Dear Marcel,

From point of view of animals, colours matter a lot. Insects cannot see red. Aphids are attracted during their wandering first by blue to fly up and be distributed well. Then they fascinated by green and yellow to descend to the earth and feed on plants.

What about birds? They can see colours.

Dear Marcel, the word "good for your eyes" is very easy to understand. Things good for our eyes means things which are soothing for our eyes and from your Biological point of view, 'good' means 'not stressful'. Anyway thanks for sharing your view.

I assume when we say good or bad in such cases, as color is a property of an electromagnetic matter/energy of a certain wavelength which naturally will have some coherency or otherwise with that of our cells of sight in our eyes that creates the senses  we describe above. It is therefore a natural act of similarities and dissimilarities, being in phase for more ecstatic/joyous feelings and being out of phase for irritating feelings.      

Actually you are absolutely right dear Dejenie. That is what I was trying to mean.

The ability to like some colours more than others, is highly influence by the portion of your brain that has the greatest strength, thus the left or the right side of one's brain. The explanation is highly welcomed from the anthropology side or psychology related disciplines.

Dear Shankhadeep,

After reading the posts to your question I found out very interesting things about colours. Markovic’s comprehensive study gives interesting glance at this subject. After reading it I image why our standard PC wallpapers are in green or blue colours. Subhash’s answer focuses on the role of different situations and  different colours. It is interesting observation. Dejenie recalled that colour is property of physical phenomena (“light”). We can think about it as electromagnetic waves or in certain situation as particles. I agree with Sudev (as also not expert) that some colours are comfortable for us and we feel good in their surrounding but other are neutral or strange for our brain.

You can find our experimental results on color preference in the following work (page 62):

Sajid Musa, Rushan Ziatdinov, Omer Faruk Sozcu, Carol Griffiths. (2015). Developing Educational Computer Animation Based on Human Personality Types, European Journal of Contemporary Education 11(1), 52-71.

http://ejournal1.com/pdf.html?n=1427132807.pdf

What about the muscles surrounding the eyes. Do they work more or less in relation to color perception? Is eye-muscles fatigue related  to color perception after controlling for light intensity?

"Blue light is short-wavelength visible light that is associated with more eye strain than longer wavelength hues, such as orange and red. Reducing the color temperature of your display lowers the amount of blue light emitted by a color display for better long-term viewing comfort." http://www.allaboutvision.com/cvs/irritated.htm

(I would also like to point out, in response to Marković, that bulls are red-green colorblind and respond to motion not the color red.)

I do agree with the @ Marković G. Đoko and @Sudev Naduvath, Green and Sky Blue colours are soothing for eyes even white colour too is pleasing. Thanks n Regards

I read this topic with great interest, but unfortunately here are quite some misconceptions around from the physical and biological point of view, which might lead to incorrect answers.

First of all Shankhadeep Chakraborty has to clarify (at least for me ;) ) what "good for the eyes" is supposed to mean. Does it mean not exhausting for the eyes, does it mean the colors are pleasant to look at - or something else?

Then it was stated that colors like red and yellow irritate the eyes based on the believe that bulls are attacking the red cloth - in fact bulls are color blind, they cannot distinguish red from green or yellow, etc... they just attack the rapidly moving cloth.

It was also stated in another post that colors differ in frequency or wavelength, intensity and power. That is also not entirely true - the true part is that the frequency and wavelength change with the color but that has nothing to do with the intensity as the intensity is given by the number of photons and nothing else. As the power of an electromagnetic wave is intensity per unit area also this has nothing to do with the color.

Furthemore the question was raised about the work of the eye muscles, but these muscles adjust mostly the focal length of the eye. Hence they are responsible for near and far sight (near sight --> contracted muscles --> exhausts the muscles, far sight --> relaxed muscels).

Colors are registered in the eye via the co-called cone cells. These cells work better with higher intensity of light as they are not so photon sensitive as their counter parts the rod cells. The receptors of the cells are filled with Photopsin, which can be divided into three types - each of them is "best suited" for either red, green or blue/violett. And with this technique the eyes create pictures with different colors (just like old TV sets did it).

So all in all it is save to say that different colors don't exhaust the human eye more or less, because the color vision is based on chemical reactions involving the photopsins and this chemical reaction is automatically induced if some suitable photons hit the cone cell, so the human body has not to do anything, except forwarding the nervous impuls from the cell to the brain - but this impuls is the same for all of the colors, I guess.

Dear All,

Coloured sticky traps are used for forecasting pest species as well as to decrease their populations. Yellow sticky traps attract Rhagoletis cerasi, the most important fly pest of sweet cherry. These coloured traps can be employed in integrated pest management in field and green house crops. Unfortunately, even beneficial and indifferent arthropods are attracted. In case of yellow traps, they can attract even small birds. I have seen an Erithacus rubecula - European robin killed by a sticky trap.

Dear Johannes,

After such a technical report on colours I can only add that we see inverted image but our brain performs transformation to right position. Our lens in eyes work like focusing lens which  decrease and invert image.

Thank you all.

Thank you Napoleon and Johannes for your valuable references and information..

Good! Dear Marković.

Excellent work dear Markovic.

Simultaneously, background color is also important for our eyes.

Colors, sports and feelings

Tennis courts can have different (background) colors, e.g. orange versus green versus blue versus.... What might be the impact on the feelings of the players/public?

Cheers 

It depends!

Green background color of tennis court is more soothing to player.

Dear Barbara,

Your very interesting comment recalled me the fact regarding to listening. We can hear the best sounds  which frequency is about 3 kHz..

Sports, colors and feelings: colors are correlated with other environmental factors influencing (eye-related) feelings

Example:

How to identify the relative importance of color versus court-related speed of exchanges between players on the expression of (eye-related) feelings? E.g. soft courts, like green grass surfaces (Wimbledon), are softer than hard courts, like blue-colored concrete (Australia, Flushing Meadows), also influencing the speed of exchange and the speed of eye-movements in players/observers. Is it the color or the speed of exchange that will influence (eye-movement related) feelings in observers/players?

Do players get more excited on orange courts (Paris) than on green courts (Wimbledon)? And what is the impact of the referees as an additional factor in the expression of feelings?

Some colors are more likely to strain eyes, but there are also colors known to have a positive effect. When you're getting ready to repaint the interior of your home, design a website, or add new hues to your wardrobe, it's worth considering color theory and how it relates to both psychology and science.

http://news.essilorusa.com/stories/detail/think-about-your-eyes-before-you-select-your-paint-color

Dear all,

Good day,

The role of the eyes is the distinction of colors, looking at these colors the mind relaxes. Generally, these are the cool colors that relaxes the mind.

Regards

The human eye can see 7,000,000 colors. Some of these are eyesores. Certain colors and color relationships can be eye irritants, cause headaches, and wreak havoc with human vision. Other colors and color combinations are soothing. Consequently, the appropriate use of color can maximize productivity, minimize visual fatigue, and relax the whole body.

http://www.colormatters.com/color-and-vision/color-and-vision-matters