What colors attract mosquitoes?
Mosquitoes are most strongly attracted to red, orange, black, and cyan. That specific list comes from a 2022 study published in Nature Communications by Jeffrey Riffell’s lab at the University of Washington, which tracked Aedes aegypti mosquitoes inside a small wind tunnel and offered them coloured dots on a neutral background.
The twist that made the study famous: the mosquitoes only cared about colour after they smelled carbon dioxide. When the researchers pulsed CO2 into the chamber — mimicking the breath of a nearby human — the insects suddenly flew toward red, orange, black, and cyan while ignoring the others. Remove the CO2, and the same mosquitoes drifted past every colour without interest. In other words, scent flips the switch, and colour helps the mosquito finish the hunt.
Why those colours? They share long-wavelength or high-contrast properties. Reds and oranges sit at the long end of the visible spectrum (roughly 620–750 nanometres), and the researchers noted that human skin — regardless of pigmentation — reflects a strong signal in exactly that red-orange band. To a CO2-primed mosquito, a patch of exposed skin, a red shirt, or a black silhouette all read as “host here.” If you want the fuller picture of what draws mosquitoes to specific people, see our guide on what attracts mosquitoes to you.
What colors do mosquitoes hate?
Mosquitoes largely ignore green, blue, purple, and white. In the 2022 experiment, these colours failed to draw the mosquitoes even after CO2 was introduced, making them the closest thing to “mosquito-neutral” shades you can wear.
White is the standout because it reflects nearly the entire visible spectrum rather than concentrating energy in the long-wavelength red-orange range that mosquitoes lock onto. Cool, short-wavelength colours like blue, green, and purple similarly lack the signal the insects are tuned to. This is the scientific backbone behind the age-old advice to wear light, cool-toned clothing on a summer evening.
One honest caveat: “hate” is too strong. Mosquitoes do not flee from green or white — they simply are not pulled toward it. You still emit CO2, heat, and odour that a mosquito can follow regardless of what you wear. If you want to actually push mosquitoes away, that is a job for scent, not colour — see the smells mosquitoes hate guide for repellent options that genuinely deter them.
Does black attract mosquitoes?
Yes — black is one of the four colours mosquitoes actively flew toward in the 2022 University of Washington study. It attracts on two fronts at once: it was a preferred visual target in the experiment, and black fabric absorbs and re-radiates heat, which is itself a mosquito attractant.
Black also creates strong contrast. Against a bright evening sky or a pale patio, a person in dark clothing forms a sharp silhouette that is easy for a CO2-primed mosquito to see and track. This lines up with generations of anecdotal backyard experience — the person in the dark hoodie always seems to get eaten alive. The practical takeaway for GTA patios: swap the black t-shirt for a light one during peak mosquito hours at dawn and dusk.
What color should you wear to avoid mosquitoes?
Wear white, khaki, pale green, pale blue, or light grey to be least visually attractive to mosquitoes. These map directly onto the colours the 2022 study found mosquitoes ignored, and they double as the coolest, most comfortable choices for an Ontario summer.
The full clothing playbook is simple: choose light, cool-toned colours; avoid red, orange, and black; and prioritise loose, long-sleeved coverage, because a mosquito cannot bite fabric it cannot reach through. Loose weave matters — mosquitoes can bite through tight fabric stretched over skin. Add a Health Canada-registered repellent (DEET or icaridin) on any exposed skin, and you have layered the two things that actually move the needle: reduced visibility and active deterrence.
Keep the expectation realistic. Colour is the weakest lever of the three main attractant categories. If you are the person who always gets bitten while everyone else is fine, the cause is far more likely your CO2 output, skin chemistry, or even your blood type than your shirt — we break that down in what blood type mosquitoes bite most.
Myth vs Fact: Mosquitoes and Colour
| Common belief | What the science says |
|---|---|
| “Mosquitoes are colourblind.” | Myth. They have colour vision and respond to specific wavelengths — but only after they detect CO2 (2022 study). |
| “Bright colours attract mosquitoes.” | Partly false. It is long-wavelength red-orange (plus black and cyan) that attracts, not brightness. Bright white and bright blue do not. |
| “Wearing white makes you invisible.” | Myth. White is less attractive, but you still emit CO2, heat, and odour — the primary cues. |
| “Dark clothing is the main reason I get bitten.” | Overstated. Black does attract, but CO2 and body odour dominate. Colour is a secondary, close-range cue. |
| “Blue attracts mosquitoes.” | Myth. In the 2022 study mosquitoes ignored blue, green, purple, and white. |
| “Red is a magnet for mosquitoes.” | Fact. Red was among the top attractants — it matches the red-orange signal human skin emits. |
| “Colour matters more than perfume or sweat.” | Myth. Odour and CO2 are stronger, longer-range attractants than any clothing colour. |
The Colour Cheat Sheet: Attract vs Ignore
Here is the 2022 Nature Communications finding distilled into a wear-it-or-skip-it table for your next backyard evening in the GTA.
| Colour | Mosquito response | Wear it outdoors? |
|---|---|---|
| Red | Strong attraction | Avoid |
| Orange | Strong attraction | Avoid |
| Black | Strong attraction (+ absorbs heat) | Avoid |
| Cyan | Attraction | Avoid |
| Green | Largely ignored | Good choice |
| Blue | Largely ignored | Good choice |
| Purple | Largely ignored | Good choice |
| White | Largely ignored | Best choice |
Based on Alonso San Alberto et al., “The olfactory gating of visual preferences to human skin and visible spectra in mosquitoes,” Nature Communications, February 2022, using Aedes aegypti. Individual species and conditions vary; treat colour as one small factor among many.
Why Colour Is the Weakest Lever (and What Actually Works)
The colour story is fascinating, but it is important to keep it in proportion. A female mosquito finding a host works in stages: she detects a plume of CO2 from up to 10 metres away, then follows body heat and skin odours such as lactic acid, ammonia, and the compounds your skin bacteria produce, and only in the final approach does vision — colour and contrast — guide her landing. Colour is the last and weakest link in that chain.
That is why changing your shirt from black to white helps a little, but changing your whole environment helps a lot. In a GTA backyard, the highest-impact moves are eliminating standing water where mosquitoes breed (they can complete a life cycle in as little as 8–10 days in warm weather), using a registered repellent on exposed skin, and treating the yard’s resting vegetation with a residual barrier so mosquitoes die before they ever reach you.
The Bottom Line for GTA Backyards
If you take one thing from the 2022 research: mosquitoes hunt red, orange, black, and cyan and ignore green, blue, purple, and white — but only after your breath has already given you away. Wear light, cool colours as a small advantage, cover exposed skin, use a Health Canada-registered repellent, and remove standing water. For a yard you can actually enjoy from May through September, pair those habits with a professional barrier spray program that reduces the mosquito population itself rather than just how visible you are to it.
Related Reading
- What Attracts Mosquitoes to You? (CO2, heat, blood, sweat)
- What Blood Type Do Mosquitoes Bite Most?
- Smells Mosquitoes Hate — Scents That Repel Them
- BuzzSkito Professional Mosquito Control Service
Frequently Asked Questions
What colors attract mosquitoes the most?
Red, orange, black, and cyan attract mosquitoes the most. In a 2022 University of Washington study published in Nature Communications, Aedes aegypti mosquitoes that had just detected CO2 flew straight toward these four colours. The common thread is long-wavelength light — reds and oranges around 620–750 nanometres — which is also the wavelength human skin reflects regardless of skin tone. Black and cyan performed strongly too. Green, blue, purple, and white were largely ignored by the same mosquitoes.
What colors do mosquitoes hate or avoid?
Mosquitoes tend to ignore green, blue, purple, and white. In the 2022 Nature Communications colour study, mosquitoes that had detected CO2 showed little to no attraction to these shorter-wavelength and neutral colours, even though they beelined toward red, orange, black, and cyan in the same setup. White is the most consistently unattractive because it reflects nearly all wavelengths rather than emitting the long-wavelength "red" signal mosquitoes lock onto. Important caveat: no clothing colour makes you invisible — you still emit CO2, body heat, and skin odour, which are stronger cues than colour.
Does the color black attract mosquitoes?
Yes. Black was one of the four colours mosquitoes flew toward in the 2022 University of Washington study, alongside red, orange, and cyan. Black also absorbs heat and stands out sharply against the sky or a pale background, making a dark-clad person easier for a mosquito to see and track once CO2 has switched on its visual search. This matches decades of older field observations that people in dark clothing report more bites. Wearing light colours like white, khaki, or pale blue is a reasonable way to be less visually conspicuous to mosquitoes.
What color should you wear to avoid mosquito bites?
Wear white, khaki, pale green, pale blue, or light grey to be least attractive to mosquitoes visually. The 2022 Nature Communications study found mosquitoes ignored green, blue, purple, and white after detecting CO2, while red, orange, black, and cyan drew them in. So the practical rule is: avoid red, orange, black, and dark saturated colours, and choose light, cool-toned clothing. Colour is only a secondary defence, though — loose, long-sleeved clothing plus a Health Canada-registered repellent like DEET or icaridin does far more to prevent bites than colour choice alone.
Are mosquitoes attracted to the color red?
Yes, strongly. Red was among the most attractive colours in the 2022 University of Washington study, and the researchers pointed out why it matters: human skin, regardless of pigmentation, emits a long-wavelength signal in the red-orange range. When a mosquito smells the CO2 in your breath, its eyes then hunt for exactly that red-orange wavelength — which is essentially a beacon pointing at exposed skin. Wearing red or orange clothing adds more of the same signal mosquitoes are already programmed to chase.
Can mosquitoes actually see color?
Yes. Mosquitoes have functional colour vision and respond to specific wavelengths of light, but the 2022 Nature Communications study showed their colour preferences only switch on after they smell CO2. Without CO2 present, the mosquitoes in the experiment largely ignored coloured dots on a white background. Once CO2 was pulsed in — mimicking a nearby breathing human — they immediately gravitated to red, orange, black, and cyan. So mosquito vision is real but odour-gated: scent tells them a host is near, then colour and contrast help them home in.
Does wearing white or light colors actually keep mosquitoes away?
Light colours make you less visually attractive, but they do not keep mosquitoes away on their own. In the 2022 study, white was one of the colours mosquitoes ignored, so light clothing reduces one of the cues a mosquito uses. However, you still exhale CO2, radiate body heat, and give off skin odours such as lactic acid — all stronger attractants than clothing colour. Think of light clothing as a small edge, not a repellent. For real protection, combine it with a registered repellent and by reducing standing water where mosquitoes breed.
Why does dark clothing seem to attract more mosquito bites?
Dark clothing attracts more bites for two reasons. First, black was one of the four colours mosquitoes actively flew toward in the 2022 University of Washington experiment. Second, dark fabric absorbs and re-radiates heat, and mosquitoes are drawn to warmth, so a dark shirt on a summer evening reads as a warm, high-contrast target. Dark colours also stand out against a bright sky or pale surroundings, making a person easier to see. Switching to light, loose clothing removes both the colour cue and some of the heat cue.
Does clothing color matter more than scent or CO2?
No. CO2 and body odour matter far more than clothing colour. The 2022 Nature Communications study is explicit that colour is a secondary, odour-gated cue — mosquitoes only pay attention to colour once they have detected CO2 from breath. Your breath, skin bacteria, sweat compounds like lactic acid, and body heat are the primary long-range attractants. Colour helps a mosquito complete the final approach once it is already close. That is why colour is worth optimising but is never a substitute for repellent or source reduction.
Do the same colors attract ticks?
Not in the same way. Ticks do not fly and do not use CO2-gated colour vision the way mosquitoes do — they mostly detect hosts by questing on vegetation and sensing CO2, heat, and vibration as you brush past. Some research suggests ticks may cling slightly more to lighter fabrics, which is the opposite of mosquitoes, but the practical reason people wear light colours against ticks is simply that dark ticks are easier to spot and remove from pale clothing. For mosquitoes, light colours reduce attraction; for ticks, light colours mainly improve detection.
What colors attract mosquitoes at dusk and after dark?
At dusk and in low light, contrast matters more than hue. Mosquitoes silhouette a warm, dark shape against the fading sky, so black and dark saturated colours remain the most conspicuous at the times mosquitoes bite most — dawn and dusk for many GTA species. The red-orange skin signal identified in the 2022 study still applies to exposed skin regardless of light level. In practical terms, the colour advice does not change after dark: avoid black, red, and orange, and cover exposed skin, because your body heat and CO2 keep working around the clock.