Dulux Deep Fossil / Grey Steel 1 / 00NN 31/000

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Code:00NN 31/000
Name:Deep Fossil
Brand:Dulux

What color is Dulux Deep Fossil?

Dulux Deep Fossil 00NN 31/000 is a muted mid-tone grey with an almost neutral cast and very low color saturation. Its balanced appearance keeps it from reading strongly blue, brown, or green, although changing daylight may bring out subtle differences in its grey character. Use it on living room or bedroom walls where a grounded, unobtrusive backdrop is wanted without the heaviness of charcoal. Deep Fossil also suits cabinetry, interior doors, and built-in shelving, especially alongside crisp white trim, black hardware, pale oak, concrete, or brushed metal. In brighter spaces, it appears soft and even; under lower light, it takes on a deeper, more reserved grey presence.

Deep Fossil for bedroom (3 photos)

We’ve hand-picked a beautiful collection of photos of this amazing grey shade used in real bedrooms. Take a look and imagine how this wonderful cool mid-tone paint color could transform your own bedroom space.

Grey Steel 1 bedroom accent wall
@dbpaintingdecorating_npt
Dulux Grey Steel 1 bedroom accent wall
@dbpaintingdecorating_npt
Deep Fossil bedroom accent wall
@onlymechrissy

Deep Fossil for living room (7 photos)

Check out this stunning mid-tone color used in real living rooms. Explore how this grey shade can create a unique space

Grey Steel 1 living room interior
@bellwaymaple2020
Deep Fossil living room color
@fairway_onthehill
Deep Fossil living room fireplace
@fairway_onthehill
00NN 31/000 living room accent wall
@majorleaguepainter
00NN 31/000 living room fireplace color
@majorleaguepainter
Dulux Grey Steel 1 living room color
@dressingourhome
Dulux Deep Fossil living room accent wall
@dorsetreno_no29

Dulux 00NN 31/000 for bathroom (3 photos)

Looking for inspiration for your dream bathroom renovation project? These beautiful handpicked photos will show you this delightfully cool mid-tone grey real bathrooms.

Dulux Grey Steel 1 bathroom color review
@thehazelhouse153
Dulux Deep Fossil bathroom color review
@thehazelhouse153
Dulux Deep Fossil bathroom color
@thehazelhouse153

Dulux Deep Fossil reviews (9 photos)

View the photos of real spaces painted with this grey that were not included in specific categories. Close-ups, painted furniture, storages and dressers, hallways, stairs and ceilings.

Deep Fossil stairs color
@lonepinerenovations
Dulux 00NN 31/000 wall panelling color review
@made_by_mattt
Dulux 00NN 31/000 wall panelling
@made_by_mattt
Dulux 00NN 31/000 office paint
@gvdecorating
Dulux Grey Steel 1 dining room accent wall
@no1_the_harrier
Dulux Grey Steel 1 office accent wall
@gvdecorating
Dulux Grey Steel 1 office color
@gvdecorating
Dulux 00NN 31/000 hallway color
@happeningatourhouse
Dulux Deep Fossil dining room color
@spruce.decorating

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What are Dulux Deep Fossil undertones?

Deep Fossil is a midtone, near-neutral medium gray. Its chroma is so low that assigning a specific hue-based undertone would be misleading. Because it is close to neutral, nearby surfaces and the color of the light can noticeably change how warm or cool it appears.

HEX value:

#8F908F

RGB code:

143, 144, 143

Is Dulux Deep Fossil cool or warm?

warm
cool
Color wheel

With a hue of 120°, this Grey shade sits right in the neutral zone on the HSL color wheel—neither warm nor cool.

00NN 31/000 Deep Fossil HSL code: 120, 0%, 56%

Hue - degree on a color wheel from 0 to 360. 0 is red, 120 is green, and 240 is blue.
Saturation is expressed as a percentage. At 0%, it appears as a shade of grey, and at 100%, it is in full color.
Lightness is also a percentage value. 0% is black, and 100% is white.

How light temperature affects Deep Fossil

Natural Lighting. During the day, natural light shifts from about 2000 K at sunrise/sunset to 5500–6500 K at noon.

Bedroom daylight mockup
Bedroom overlay
Sunrise
Morning
Noon
Afternoon
Sunset

In addition, natural-light temperature depends on its direction:

Direction of sunlightVisible temp.HueDuration
NorthCoolBluishAll day
EastWarmYellowBefore noon
WestWarmOrange-redAfter noon
SouthWarmOrange-yellowAll day

Artificial Lighting. When choosing bulbs, pay attention to their color temperature in Kelvins.
Use the slider to see how this Grey shade looks under different lighting:

Living-room mockup
Living-room overlay

4000K

2000K
3000K
4000K
5000K
6000K
7000K

Coordinating colors.
Colors that go with Dulux Deep Fossil:

Monochromatic color scheme

Monochromatic color scheme

This scheme consists of various shades, tints, and tones of a single color. While it offers a perfect combination of hues, without accent décor it may become monotonous.

Lighter shades

00NN 31/000
Deep Fossil

Darker shades

00NN 31/000
Deep Fossil

Complementary color scheme

Complementary color scheme

This color scheme is a combination of two shades that are opposite each other on the color wheel. The high contrast between these colors creates a vibrant and dynamic visual effect. For the color Deep Fossil with a yellow hue, complementary colors are those with a purple hue close to 300, such as Dulux Purple Sage 5 and Himalayan Musk 2.

Color codes

We have collected almost every possible color code you could ever need.
Not sure what the difference between HEX and RGB is? We break down color models in plain language. Understanding color models

FormatCode
HEX#8F908F
RGB Decimal143, 144, 143
RGB Percent56.08%, 56.47%, 56.08%
HSVHue: 120° Saturation: 0.69% Value: 56.47%
HSLhsl(120, 0, 56)
CMYKCyan: 0.69 Magenta: 0.0 Yellow: 0.69 Key: 43.53
YIQY: 143.587 I: -0.275 Q: -0.523
XYZX: 26.258 Y: 27.769 Z: 29.956
CIE LabL:59.68 a:-0.562 b:0.404
CIE LuvL:59.68 u:-0.512 v:0.666
Decimal9408655
Hunter Lab52.697, -3.276, 3.184

Color equivalents