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Green wall paint buying guide

Updated: October 2026

You are about to order a green emulsion for a UK room, and the squares on your phone look close enough until the paint dries. Green wall paint covers sage, olive, and mid green, and a screen swatch is a poor guide to daylight on plaster. Decide the room’s finish first, then a named green you have seen dry, then a 2.5 litre emulsion unless the job is a chair or a cupboard. Shelf prices and star lines for this amazon.co.uk set sit on the [green wall paint comparison](/hub/paints-and-varnishes/wall-paint-green). A qualifying purchase can earn us a commission at no extra cost to you.

You are about to order a green emulsion for a UK room, and the squares on your phone look close enough until the paint dries.

Our top picks

Johnstone's Johnstone's Natural Sage silk, 2.5 L

Best overall

Johnstone's Johnstone's Natural Sage silk, 2.5 L
9.3/10about £16.60
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Johnstone's Johnstone's Natural Sage soft sheen, 2.5 L

Alternative

Johnstone's Johnstone's Natural Sage soft sheen, 2.5 L
9.0/10about £16.72
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Johnstone's Johnstone's Natural Sage matt, 2.5 L

Best value

Johnstone's Johnstone's Natural Sage matt, 2.5 L
9.1/10about £17.18
View offer
On this page
  1. 1.Start with the room, not the shade name
  2. 2.Sage, olive, and mid green are different paints
  3. 3.Read the tin size and the review pool
  4. 4.Turn coverage into tins

Start with the room, not the shade name

The finish decides how the green behaves before the colour name does. A living room with tired plaster usually wants a matt, because a flat film scatters light and keeps a filled crack quieter. A hallway or a kitchen wall you wipe wants more sheen, and silk is the usual step up. Soft sheen sits between them. The longer split for dry rooms is on the matt or silk emulsion page. A living-room matt is a weak match for a bathroom or an en-suite, and the moisture claim belongs on the green bathroom paint page.

Sage, olive, and mid green are different paints

Johnstone’s Natural Sage, Crown Mid Green, Ronseal Evergreen, and Ronseal Olive each name a different colour. Crown’s Mid Green colour field stores Botany Bay, so the title and the colour field already disagree. The three Natural Sage listings print #8DC63C, #B2B7A5, and #CCDEC2. Those hex values conflict.
Johnstone's Johnstone's Natural Sage silk, 2.5 L

Testsieger

Johnstone's Johnstone's Natural Sage silk, 2.5 L
9.3/10about £16.60
View offer

Read the tin size and the review pool

A room wants a 2.5 litre emulsion. In this amazon.co.uk set those tins run from £16.60 to £29.98. THE ONE Green Matt is 250 ml at £14.95, and its colour-code field says Navy. That pot can cover a chair or a cupboard door, while a living-room wall at two coats needs the 2.5 litre tin. Crown Mid Green and Evergreen Echo both show 4.6 from 308 and share the first 50 review texts, so that figure is one pool printed twice. Once those shared pools are set aside, the short list is on the sage green short list.

Turn coverage into tins

Treat 12 square metres per litre as a rule of thumb. One coat from 2.5 litres is about 30 square metres. Two coats, the normal plan over a contrasting colour, leave about 15 square metres of wall. Past that outline, or over a dark old colour, one 2.5 litre tin runs out on the second wall. Matt wall paint is capped at 30 g/l VOC under SI 2012/1715, and a 1 g/l bullet is a content figure inside that cap, with no health claim about the dried film.

Common questions

Is sage the same as olive or mid green?
They are different named paints. Natural Sage, Crown Mid Green, Ronseal Olive, and Ronseal Evergreen are separate listings, and Crown’s Mid Green colour field stores Botany Bay. See the named green dry, in the finish you will buy, before you treat those words as the same tin. A swatch on a phone still has to survive morning light and the lamp you use after dark.
Why do the three Natural Sage listings not share one colour code?
The matt, silk, and soft sheen listings print #8DC63C, #B2B7A5, and #CCDEC2. Those values conflict, so a hex on one tin is a weak guide to the other finishes. Matt also reflects less light than silk, which changes the dry colour again. Treat the codes as a warning, and judge a labelled tester on your wall in daylight and after dark.
Should I buy a tester before a 2.5 litre tin?
Yes, when you have yet to see that finish dry in the room. Brush the same sheen onto lining paper, label the pot with the brand and the colour name, and look in the morning and again under your own lamp. A silk tester will mislead you about a matt wall. The pot is the cheap check against a 2.5 litre tin that dries greyer than the screen.
Is £17 for Johnstone’s cheap or normal?
Inside this amazon.co.uk set it is the low end. Natural Sage is £16.60 in silk, £16.72 in soft sheen, and £17.18 in matt, and the 2.5 litre band runs to £29.98. A Wickes Botanical Green has been about £10 for 2.5 litres, with Lick and Farrow & Ball nearer £39 and £64. So £17 is inexpensive here and still above a cheap own-brand. The live basket can move.
Can I use a 250 ml all-in-one tin for a room?
Use it on a chair or a cupboard door. THE ONE Green Matt is 250 ml at £14.95, about £59.80 a litre, and its colour-code field says Navy. A living-room wall at two coats wants a 2.5 litre emulsion from the £16.60 to £29.98 band. The small tin looks cheaper only per pot, and the large review count belongs to the wider range.
Does 4.6 from 308 mean that many people painted this shade?
Crown Mid Green and Evergreen Echo both carry 4.6 from 308 and share the first 50 review texts, so the figure is one pool twice. THE ONE’s 13,046 reviews cover the wider range. ELLE has nine reviews, and DRW has no star line. Read whether the text names the shade before you treat the average as a test of this green.

Related pages

How to paint walls green

Wall paint green

Green bathroom paint: a finish that copes with steam

Best sage green paint for walls: room-by-room picks

Matt vs silk emulsion for green walls you will wipe

Sources

Public UK sources for the VOC cap, the description duty and leftover paint. Prices, stars and review counts are from the amazon.co.uk listings in this set. We did not run a laboratory test.

  1. SI 2012/1715 — VOC in paints and varnishes (retrieved 17 October 2026)
  2. Consumer Rights Act 2015, section 11 (retrieved 17 October 2026)
  3. GOV.UK — Consumer Rights Act 2015 (retrieved 17 October 2026)
  4. BS EN 13300:2022 contents preview (retrieved 17 October 2026)
  5. Crown — choose the right paint finish (retrieved 17 October 2026)
  6. Crown — Walls & Ceilings silk emulsion (retrieved 17 October 2026)
  7. GOV.UK — dispose of household waste (retrieved 17 October 2026)
  8. Dumfries and Galloway Council — get rid of paint (retrieved 17 October 2026)