See the pairings section below for calculated harmony options.
Common uses
See uses & contexts below for interiors, fashion and practical guidance.
Accessibility snapshot
Pairs better with black text (6.0:1) than white (3.5:1).
See this colour in the real world
Colours in photographs vary with lighting, material, camera processing and screen calibration — the named colours below are visual approximations, not exact measurements.
Nature
This isn't just a colour on the copper fixture — the same copper carbonate that turns the metal itself green has washed down and tinted the stone beneath it, a visible record of ongoing oxidation.
The exact shade of verdigris varies with humidity, pollution and how long weathering has continued — this is one specimen at one point in its exposure, not a fixed reference colour.
Why a copper roof or statue turns green over decades, not days
Verdigris forms as copper reacts slowly with oxygen, moisture, carbon dioxide and airborne sulphur compounds — a process typically taking years to decades outdoors, not a sudden change. The exact shade and speed depend on local climate and pollution, which is why two copper structures in different cities can weather to noticeably different greens on different timelines.
In practice: There is no single 'verdigris green' reference colour — the same starting material weathers differently depending on where it is, which matters when specifying an aged-copper finish.
Calculated from Cobalt Green’s position on the HSL wheel (hue 155°, saturation 43%, lightness 42%). Colour-wheel pairings are a design convention, not a guarantee: check any pairing in the light and material you will use it in.
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Complementary
Opposite hues (180° apart) for maximum hue contrast: hue 155° → 335° on the HSL wheel.
Sea Green is the closest, at ΔE00 6.7 from cobalt green: 6 points darker, 6 points more saturated and 9° round towards yellow. That is clearly different, though many people would use one name for both.
Jade is next, at ΔE00 6.7 from cobalt green: 4 points lighter, 17 points more saturated and 5° round towards yellow. That is clearly different, though many people would use one name for both.
Forest Green is next, at ΔE00 14.6 from cobalt green: 6 points darker, 28 points more saturated and 24° round towards yellow. That is a different colour at a glance.
Verdigris is next, at ΔE00 14.7 from cobalt green: 10 points lighter, 5 points less saturated and 30° round towards green. That is a different colour at a glance.
Worked out from this colour’s own measurements — its lightness, saturation and undertone — rather than written for it. That is why the guidance differs from one colour to the next even when the two look similar.
What role it can play
This works across a range of sizes. At chroma 39 it is assertive enough to register on a small object and restrained enough not to dominate a wall.
Walls and large surfaces
workable
Chroma 39 is above the usual comfort level for walls and large surfaces, so expect it to take charge. That is a legitimate choice in a room that wants a subject. Walls set the room's baseline, so this is the decision everything else answers to.
Secondary surfaces
strong
Chroma 39 sits inside the range secondary surfaces carry without taking over the room.
Furniture
strong
Chroma 39 sits inside the range furniture carry without taking over the room.
Rugs, curtains and bedding
strong
Chroma 39 sits inside the range rugs, curtains and bedding carry without taking over the room.
Trim and joinery
strong
Chroma 39 sits inside the range trim and joinery carry without taking over the room.
Accents and small objects
strong
Chroma 39 is exactly what an accent is for. The saturation that makes this difficult across a wall is the reason it works on a cushion, a door or a single chair.
As an accent: repeated accent
Chroma 39 is strong enough to register and restrained enough to repeat. Two or three appearances read as intentional where one reads as an orphan.
Warm bulbs emit little short-wavelength energy, so there is less for a green to reflect. There is enough chroma here to survive it, though it will read warmer and slightly duller.
Under cool bulbs
Cool light flatters this — it will hold its identity and may read slightly more saturated than in warm light.
In daylight
A mid-tone reads most consistently across the day, which is why so much upholstery sits in this band.
In a dim room
Enough lightness and chroma to stay recognisable in a dim room, though it will lose some saturation.
Compared with the sample card
Expect a modest step darker than the chart, which is normal and is why sampling a large area matters.
Opposite in undertone to Dark wood, but 35 points apart in lightness or far enough round the hue circle that the difference reads as deliberate contrast rather than as a clash.
Oak · Walnut · Pine · Plywood · Light wood (ash, birch, beech) · Reddish wood (mahogany, cherry, teak)
needs care
Opposed in undertone to Oak, Walnut, Pine, Plywood, Light wood (ash, birch, beech) and Reddish wood (mahogany, cherry, teak) with only 9–29 points of lightness to explain the difference, which is the combination the eye most often reads as an error.
The amount of timber matters as much as the tone: one piece is an accent, a floor plus joinery is the room’s dominant colour. More on working with wood tones
With metal fittings
Chrome · Black metal
works well
Shares the cool bias of Chrome and Black metal, so they agree about the temperature of the room, and 24–50 points of lightness keep them readable as separate from this colour.
Brass · Gold-tone · Stainless steel · Copper
works well
Shares the cool bias of Brass, Gold-tone, Stainless steel and Copper and sits within 11–19 points of them in lightness, so expect a quiet, tonal relationship rather than a contrast.
Metal carries more attention than its area suggests, so repetition matters more than the exact finish. More on metals and mixing them
Where it can go wrong
No characteristic failure mode stands out from this colour's measurements — it sits in a comfortable range for lightness and chroma alike. The usual caution still applies: judge it from a large sample, in place, in the light the room actually gets.
Calculated directional adjustments. Some directions converge on the same result from this starting colour — shown as one merged card with an explanation, not repeated duplicates. Generated shades link to a curated profile only when one is close enough.
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