On the sand, the wind rises and the light plays.
White dazzles, black asserts itself, colors dance in the heat.
We have always associated light shades with coolness, and dark ones with heat.
But what is the truth? In the sun, do light clothes protect better than dark ones?
Between intuition and science, the answer lies in the weave, the light… and how the skin breathes.
The myth of protective white
Wearing white in the sun is an almost instinctive reflex.
The color evokes purity, lightness, the summer breeze.
But while white reflects visible light, it doesn't necessarily block it.
Ultraviolet (UV) rays, invisible to the naked eye, pass more easily through light and thin fabrics.
According to a study by the CNRS on UV radiation transmission through textiles (2019), a light white cotton has a UPF of 5 to 10, whereas a dark fabric of equivalent density can reach UPF 20 or more.
The reason: dark pigments absorb a larger part of the ultraviolet spectrum.
In other words, black heats up more… but it protects better.
When light meets matter
Color is only one of the parameters of a garment's sun protection.
The density of the weave, the composition of the fibers, and the fineness of the yarn equally influence a textile's ability to block UV rays.
A thick white linen will filter better than a sheer black cotton, simply because it offers less space between the fibers.
The World Health Organization (WHO) reminds us that UV transmission depends on a set of factors:
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color (absorbing pigments),
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fabric density (space between threads),
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fiber type (cotton, polyester, polyamide),
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and humidity (a wet fabric lets more UV rays pass through).
Thus, color alone is not enough to judge protection.
Dark clothing protects better at equal density, but a well-designed light fabric can achieve the same result — provided it has been tested and certified UPF 50+.
The heat paradox
If black protects better from UV rays, why do we feel so hot when we wear it?
Because it absorbs visible and infrared light, which generate heat.
A dark garment captures more light energy and transforms it into heat, increasing the surface temperature.
But studies from the Journal of Applied Physiology (2003) have shown that a loose black garment, allowing air to circulate, can remain surprisingly comfortable—because convection (air movement) dissipates the absorbed heat.
Thermal comfort therefore depends not only on color, but also on the garment's cut:
a fitted black heats up, a fluid black breathes.
This is the idea Jayne explores: covering, airy pieces that let light pass through without suffering from it.
The elegance of protection
Science proves it: the contrast between light and dark is not an aesthetic judgment, but a play of balance between absorption and reflection.
White reflects light, black retains it.
One illuminates the silhouette, the other sculpts it.
And in reality, the best protection often lies in the combination of the two: a dense fabric, in a soft but pigmented shade, that filters UV rays while allowing the skin to breathe.
At Jayne, color becomes a raw material in its own right.
Our anti-UV fabrics don't just protect: they interact with light.
A pale sand, a slate blue, a mineral brown — each shade has been chosen to protect the skin while highlighting the silhouette.
How to choose the right shade?
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If you live or travel in a very hot climate, prefer light, tightly woven tones, which reflect heat while blocking UV rays.
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For more temperate environments or long exposures, medium to dark tones will offer better filtration, without overheating.
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In all cases, look for the mention UPF 50+ according to standard EN 13758-1: this is the guarantee of a tested fabric, whatever its color.
Elegance is not in the shade, but in measure—knowing how each color captures or repels light, and working with it.
At Jayne
At Jayne, we design solar clothing that doesn't choose between beauty and performance.
Our UPF 50+ pieces, made in Paris, combine carefully selected pigments, technical fabrics, and fluid cuts to create discreet, sensorial, almost instinctive protection.
Because light is not to be fought: it is to be understood, channeled, inhabited.
Sources
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CNRS, Studies on UV radiation transmission according to textile color and density, 2019
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World Health Organization (WHO), Solar Ultraviolet Radiation: Global Burden of Disease, 2021
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Journal of Applied Physiology, Heat Transfer and Clothing Color in Hot Climates, 2003
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European Standard EN 13758-1:2001, Textiles – Solar ultraviolet protective properties – Test method and marking requirements
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Skin Cancer Foundation, Fabric Color and UV Protection, 2022
