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What color will my pool’s water be?

What color will my pool’s water be?
20 June, 2019 Corina de Castro

What color will my pool’s water be?

This is one of the questions we have heard most often from our clients. And it makes sense. At Rosa Gres we have transformed the world of pool design. We have added to the classic and famous “white edge – blue water” duo a wide range of colors and textures: different tones of white, beige, sand, earth, stone, slate, ochre, orange, brown, gray, and even black.

And so on up to more than 40 colors that can be combined in many different ways. It isn’t strange, then, that faced with all these options, one would ask: So then… what color will the water be?

Water always tends towards the color blue

 A glass of pure water is transparent. It has no smell, no taste, and no color. Or so it seems to the naked eye. But why does water look blue in pools or in the sea?

Water’s blue color is due to an effect known as Rayleigh scattering. We’ll explain it in simple summarized terms:

  • Water absorbs light’s long wavelengths (red, orange, yellow) more easily than its short ones (blue, violet).
  • The short wavelengths of light that aren’t absorbed (blue) are reflected off the surface, and thus our eyes perceive them. Hence water’s beautiful blue hues.
  • This effect increases with the amount of water. That is why in shallow waters, less than 50cm deep approximately, we don’t perceive it and water looks transparent.

So, thanks to Professor Rayleigh, who was awarded the Nobel Prize for Physics in 1904, we can forget about the myth that water is blue only because it reflects the sky as if it were a mirror.

What we will see right away is how the covering can help us slightly modify these nice blue hues we love so much. But first we must…

Observe how light transforms the color of the water

The colors of water, like those of light, change throughout the day. The same thing happens every season of the year and in different parts of the planet. The light of the Caribbean, the Mediterranean, or the North all shine with different tones and intensities. Here are some examples.

At night, light becomes essential again. But in this case it is artificial light and we can customize it. Betting on a good light design inside the pool is well worthwhile: the nocturnal spectacle of glowing water is truly impressive.



The covering: YOUR design is UNIQUE

It is at this point where you WILL be able to personalize your pool with your very own style.

We will now show you how our colors work when combined with water in different places and moments.

Gray: spectacular, a true hit


Mistery blue stone


Mistery Grey



Tao Grey


Serena Griggio


White: for a bright Caribbean style


Proyecta petra


Mistery White


Tao Beige


Ochre and Sand: refreshing sensations


Mistery Sand


Earth and Brown: a beautiful Mediterranean mood




Dark and Black: a sophisticated touch with the most stable temperature

It’s important to note that placing darker colors at the bottom of the pool, especially black, help stabilize the temperature and keep the water warm.

VERY special ceramic designs

There are many different options with spectacular results such as that of our color Serena Mix. No need for words; this color is daring, based on the natural texture of slate, and highly attractive both during the day and at night. Check out this image.


One thing is for certain, and that is that water attracts us almost magnetically. Only by looking at it we feel better. It makes us feel calm and well; it is relaxing. At Rosa Gres, we hope to have inspired you today with our examples. Thank you for being here.