Olive Oil Colour: What Green, Gold and Yellow Really Tell You
Olive oil colour comes from natural pigments in the fruit, mainly chlorophyll (green) and carotenoids (yellow to orange). The shade depends on the olive variety, how ripe the olives were at harvest, the growing region and the season, and it is not a reliable guide to flavour or quality. A deep green oil can be superb or dull, and a pale gold oil can be just as good. Below we explain what each shade usually means, why professional tasters hide the colour on purpose, what to look at on the label instead, and, since many people ask, how the same logic applies to light and dark honey.
TL;DR
- Olive oil colour comes from chlorophyll and carotenoids, and ranges from pale yellow to deep green depending on variety, ripeness, region and harvest year.
- Colour is not a sign of quality: professional tasting uses tinted glasses precisely so colour cannot influence the verdict.
- Better checks are a harvest date, an origin on the label, dark or opaque packaging and cool, dark storage.
- Greener oil is often (not always) from earlier harvested, less ripe olives; golden oil from riper fruit. Both can be extra virgin.
- Honey works the same way: colour mostly reflects the flowers the bees visited and how the jar was stored, not whether it is “better”.
Table of Contents
- What gives olive oil its colour
- Green, gold or yellow: what each shade usually means
- Why professional tasters hide the colour
- Does colour affect nutrition or shelf life?
- What to check instead of colour
- Is olive oil darker than vegetable oil?
- Perspective: why we never buy by colour
- Choosing Greek oil from us
- Honey colour: light vs dark and what it means
- A quick buying checklist
- FAQ
- Sources
What gives olive oil its colour
Open three bottles of genuine extra virgin olive oil and you may see three different colours. That is normal. Olive oil colour is due to natural pigments belonging to the carotenoids, the chlorophylls and their derivatives. A peer-reviewed Food Chemistry study describes virgin oils as ranging from yellow-green to greenish gold, with chlorophyll and carotenoids doing most of the work.
In plain terms:
- Chlorophyll is the same pigment that makes leaves green. Olives that are still green when picked carry more of it, and some passes into the oil.
- Carotenoids (the family that includes beta-carotene) give yellow, gold and orange tones.
- The balance between the two sets the final shade. More chlorophyll pushes towards green, more carotenoid towards gold.
That balance is moved by several things at once.
Olive variety
Some varieties naturally produce greener oil, others more golden oil, even when picked at the same stage. The same Food Chemistry study looked at single-variety oils for exactly this reason: pigment profiles differ from cultivar to cultivar. Greece grows many varieties, which is one reason Greek oils show such a wide range of colours on the shelf.
Ripeness at harvest
Unripe, green olives tend to give greener oil, while ripe purple-black olives tend to give oil in gold tones. This is why an early harvest oil often looks vivid green and tastes more pungent and bitter. We cover the early harvest style further down.
Climate and season
The same grove does not produce the same oil every year. The research behind the Spanish study notes that yearly climate variation can influence the chemical make-up of the oil as much as, or more than, genetics. A hot dry summer or a wet autumn can shift both colour and flavour from one harvest to the next.
Processing and filtration
Unfiltered oil is often cloudier and can look more opaque, because tiny particles of fruit remain in suspension. Filtered oil looks clearer and brighter. Neither is a defect. Over time, pigments also change as the oil ages, so a bottle that was vivid green at pressing will usually mellow towards gold.
Green, gold or yellow: what each shade usually means
No shade is a verdict on its own, but each one hints at things worth knowing.
| Colour | What it often suggests | What it does not tell you |
|---|---|---|
| Bright green, sometimes cloudy | Young oil, often from early-harvested, less ripe olives; likely a fresh, grassy, peppery character | Whether it is better than a gold oil |
| Olive green to green-gold | A mid-season harvest, a balanced profile | Freshness on its own |
| Golden yellow | Riper fruit or a variety low in chlorophyll; often a softer, rounder taste | That it is old or refined |
| Pale yellow, almost clear | Could be a delicate extra virgin oil, or a refined product, so read the label | Anything without the label to go with it |
That last row matters. Colour is not a reliable indicator of flavour or quality, because it moves with variety, region, climate and harvest timing. In the same spirit, The Guardian reported in 2019 that good extra virgin oil can range from straw to deep green, so colour alone is not a quality test.
Green vs yellow olive oil
If you are choosing between a green bottle and a yellow one, ask what taste you want rather than which colour is “best”. A green oil from early-picked olives is usually bolder: grassy, bitter, with a peppery catch at the back of the throat. A golden oil is usually gentler and more buttery. Both styles can be fully extra virgin. Our early harvest green extra virgin olive oil (Agourelaio) is an example of the first style, made for people who like a vivid, assertive oil on salads, grilled vegetables, beans and bread.
Why professional tasters hide the colour
The strongest evidence that colour is not a quality marker comes from how oil is actually judged. Panel tasting of extra virgin olive oil is typically done with blue or amber-tinted glasses so the taster cannot see the colour and has to focus on aroma and flavour. The Estepa protected designation of origin adds that colour is not a requirement for certifying extra virgin olive oil.
The International Olive Council says the same in its 2025 tasting guide: coloured glasses are used because colour is not a determinant of extra virgin quality. Enjoying green and yellow hues is part of the pleasure of tasting at home, but you should not use them to judge the oil.
This is also what the law looks at in the UK. GOV.UK guidance explains that all pure olive oils must meet chemical requirements, and extra virgin and virgin oils must also meet sensory requirements, such as the right smell and taste. Colour is not on that list.
Does colour affect nutrition or shelf life?
Here the picture is more nuanced, and worth knowing if you buy oil for its health profile.
It is tempting to think that greener means more polyphenols, the antioxidant compounds many people buy extra virgin oil for. It is not that simple. Colour pigments and polyphenols are different compounds, and a green tint does not prove a high polyphenol count. If polyphenols matter to you, look for a producer that states them or an oil described as high in polyphenols, not for a shade of green. For a bottle chosen on that basis, see our high polyphenol limited production Greek extra virgin olive oil.
Pigments do affect how oil behaves with light, though. The Spanish study notes that chlorophylls act as antioxidants in the dark but can become pro-oxidant when exposed to light. An older Greek study found that, in purified olive oil under light, chlorophyll acted as a photosensitizer while beta-carotene limited oxidation. The practical lesson is simple: whatever the colour, keep oil away from light. A green oil in a clear bottle on a sunny windowsill is not a bargain.
What to check instead of colour
If colour cannot tell you whether an oil is good, what can? These are the checks that carry weight.
- The harvest date. Experts recommend looking for a harvest date rather than relying on how an oil looks. Freshness matters more than shade. We explain what to look for in our guide to olive oil harvest dates.
- The oil type on the label. UK rules require the type to be stated prominently, and extra virgin and virgin oils must state their origin. An oil labelled simply “olive oil” or “pure” is, according to BBC Food, usually a blend of refined and virgin oils with a less vibrant flavour and aroma.
- The packaging. Dark glass, metal cans or bag-in-box protect against light and air. Clear glass does not.
- The taste and smell. Fresh extra virgin oil smells of grass, fruit, tomato leaf or almond, and tastes fruity with some bitterness and pepper. Rancid oil smells of crayons or stale nuts. Our guide to tasting, evaluating and buying extra virgin olive oil walks through it step by step.
- How it has been stored. Keep it in a cool, dark place, away from heat and light, as GOV.UK advises. Our UK olive oil storage guide covers kitchens, cupboards and the cooker problem.
Oils to be careful with
There is no colour that marks an oil to avoid, but there are warning signs. Be wary of clear bottles in bright shop windows, no harvest date, no origin on an oil sold as extra virgin, a very low price for a large volume, and any oil that smells flat, waxy or musty. If you are curious about the very dark and the very pale ends of the scale, the US grading manual notes that refined olive oil is often light yellow or colourless, while crude olive-pomace oil can appear opaque dark green, brown or black. These are lower categories, and they are why a label matters more than a glance.
The same manual says that virgin oils can vary from light yellow to olive green and can be cloudy or clear, with some sediment considered normal. That is why unfiltered oils with a slight haze are not a fault.
Is olive oil darker than vegetable oil?
Usually, yes, at least when it is virgin or extra virgin. Refined vegetable oils such as sunflower or rapeseed are processed to a pale, neutral gold, while virgin olive oil keeps its fruit pigments and so shows green and gold tones. But that comparison is only about processing. A pale refined oil is not “cleaner” and a green oil is not “richer”; they are simply different products.
As for a “colour code” for olive oil, there isn’t a single standard shade in UK rules. The Olive Oil (Marketing Standards) Regulations 2014 govern how oils are labelled and what categories they fall into, not what colour they must be. If you came here looking for the colour olive green as a design code, that is a different subject: olive green as a paint or screen colour is a muted yellow-green, and real oil rarely matches it.
Perspective: why we never buy by colour
We sell Greek olive oil, so people often ask us which shade to pick. Our honest answer is that we choose the producer, the harvest and the style, then let the colour fall where it falls. Our approach is to source from respected Greek producers and to select products for authenticity and nutritional quality, not for how they look in a photograph.
We see three habits in how people shop for oil. Some prefer a bright green oil because they associate it with freshness. Others pick a gold oil because it seems milder. Both groups can be happy, as long as they check the harvest date and store the bottle well. The people who are disappointed are usually those who bought on looks, kept the bottle by the hob, and found it tasted flat three months later.
If you are new to Greek oil, our advice is to try two styles side by side: one green and peppery, one golden and soft. Taste each on its own on a spoon or with bread, then with food. You will learn more in ten minutes than from any colour chart.
— Ioannis
Choosing Greek oil from us
If you want to put this into practice, our olive oil range covers both ends of the colour spectrum: early harvest green oil, organic and unfiltered oils in glass bottles and larger tins for the family kitchen. A good place to start is our organic extra virgin olive oil with lemon, or you can browse everything from the Greek Tastes 4 All shop, where olive oil, honey, olives and more are sourced directly from Greece.
New customers get 15% off a first order, and delivery is free on orders over £59.95.
Honey colour: light vs dark and what it means
People who search for olive oil colour often wonder about honey too, because the logic is the same: we are tempted to read quality into a shade.
Why honey colours differ. Honey colour depends mostly on the flowers the bees visited. Light honeys, such as many spring blossom and clover honeys, are usually mild and delicate. Dark honeys, such as those from heather, chestnut or buckwheat, tend to be stronger, more malty and sometimes slightly bitter. Honey from pine and thyme sits in between, with its own character. So the dark versus light question is mainly a question of flavour preference, not of one being superior.
Why your honey might have gone dark. If a jar that used to be pale has turned amber or brown, the usual causes are time and warmth. Honey darkens slowly as it ages, and faster when stored somewhere warm, such as next to a kettle or in a sunny cupboard. This is a change in appearance and flavour, not normally a sign that it has spoiled. Crystallisation is a separate matter: honey that sets cloudy and pale is simply crystallising, and it often looks lighter than the liquid honey did.
What colour does and does not mean. A darker colour is often linked with stronger flavour, and some people prefer it for that reason. But colour alone is not proof of purity, origin or nutritional value, just as with olive oil. Look at the label, the stated floral source and origin, and whether the honey is raw, as you would check an oil’s harvest date.
For a Greek example, our raw organic thyme honey is a limited harvest with the aromatic, slightly herbal profile thyme honey is known for. Store it in a cool cupboard, away from heat and light, and it will keep its character for longer.
A quick buying checklist
Before you add any olive oil to your basket, run through this list:
- Is there a harvest date, and is it recent?
- Does the label say extra virgin and state the origin?
- Is the bottle dark glass, ceramic, a tin or otherwise protected from light?
- Do you know whether you want a bold, peppery oil or a soft, buttery one?
- Do you have a cool, dark place to keep it once opened?
- Will you use it within a reasonable time? Smaller bottles suit lighter users, larger tins suit busy kitchens.
Notice that colour does not appear anywhere on the list. That is the point.
FAQ
Is green olive oil better than yellow olive oil?
Not necessarily. Green oil often comes from earlier harvested, less ripe olives and tends to taste more grassy and peppery, while yellow or golden oil often comes from riper fruit and tastes softer. Either can be excellent extra virgin oil. Choose by the taste you like and check the harvest date.
Does olive oil colour show whether it is real extra virgin?
No. Extra virgin status depends on chemical and sensory requirements, as set out in UK guidance, not on colour. That is why professional panels taste from tinted glasses. Look for the oil type, origin and a harvest date on the label.
Why is my olive oil cloudy or has sediment?
Unfiltered extra virgin oil can look cloudy because of tiny fruit particles, and some sediment is considered a normal characteristic of virgin oils. In the cold, oil can also turn cloudy or partly solidify, then clear again at room temperature. It is not a fault if the oil still smells and tastes fresh.
Why does honey go dark, and is it safe?
Honey usually darkens with age and warm storage, and the floral source also decides its starting colour. Darker honey is normally still fine to eat. If it smells fermented or fizzy, or has been contaminated with water, discard it. Keeping it in a cool, dark cupboard slows the change.
What colour should olive oil be?
Anything from pale yellow through gold to deep green can be correct for extra virgin olive oil. Pale, almost colourless oil labelled just “olive oil” is more likely to be a blend containing refined oil. Rely on the label, the packaging and your nose and palate.
Sources
- Determination of Pigments in Virgin and Extra-Virgin Olive Oils (PMC)
- Pigment profile and colour of monovarietal virgin olive oils (Food Chemistry)
- Olive oil: labelling, packaging and inspections (GOV.UK)
- Olive oil recipes (BBC Food)
- What does the color of olive oil mean? (North American Olive Oil Association)
- Guidelines for Hedonic Tasting of Extra Virgin Olive Oil (International Olive Council)
- The colour of extra virgin olive oil (Estepa PDO)
- Does it really matter which olive oil I buy? (The Guardian)
- Effects of Chlorophyll and β-Carotene on the Oxidation Stability of Olive Oil
- Olive Oil Myths and Facts (UC Food Quality)
- Grading Manual for Olive Oil (USDA)
