Dulux Deep Fossil / Grey Steel 1 / 00NN 31/000
| Code: | 00NN 31/000 |
| Name: | Deep Fossil |
| Brand: | Dulux |
What color is Dulux Deep Fossil?
Let’s dive into a full Deep Fossil paint color review. Take a look at pictures of real interiors and exteriors painted with beautiful 00NN 31/000. Find out if this gorgeous cold grey paint color would look great on your living room walls or trims, kitchen cabinet, bedroom accent wall, bathroom or house exterior.
Deep Fossil for bedroom
We’ve hand-picked a beautiful collection of photos of this amazing Beige shade used in real bedrooms. Take a look and imagine how this wonderful cool Mid-tone paint color could transform your own bedroom space.
Deep Fossil for living room
Check out this stunning Mid-tone color used in real living rooms. Explore how this Grey shade can create a unique space
Dulux 00NN 31/000 for bathroom
Looking for inspiration for your dream bathroom renovation project? These beautiful handpicked photos will show you this delightfully cool Mid-tone real bathrooms.
Dulux Deep Fossil reviews
View the photos of real spaces painted with this that were not included in specific categories.Close-ups, painted furniture, storages and dressers, hallways, stairs and ceilings.
Try before you buy

100% accurate
reusable paint samples
Peel, stick,
and repeat
Twice painted
with real paint
Next day
delivery
What are Dulux Deep Fossil undertones?
The undertone of Deep Fossil can be accurately described as a Green hue, as is apparent from the color space provided. By isolating the pure hue and eliminating any tints, tones, and shades, we were able to precisely determine its undertone. This approach has proven to be more accurate than traditional methods of defining undertones on a white background, which are now considered outdated.
HEX value
HEX value:
#8F908F
RGB code:
143, 144, 143
Is Dulux Deep Fossil 00NN 31/000 cool or warm?
With a hue of 120° thisGreyrefers cool paint shade according to HSL (Hue, Saturation, Lightness) on the color wheel.
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.
- Cooler hues have a calm and relaxation effect
- Cool grey shades are versatile and provide a neutral canvas for your interior design. They seamlessly complement any style, whether it's Victorian, Scandinavian, or Modern.
- Using mid-tone cool colors like soft greys and muted blues can help create a calming and modern look in rooms like home offices, bathrooms, and bedrooms. But avoid using these shades in rooms without natural light, as they may look dull.
Act like a pro: Mixing warm and cool shades is a must have to get harmonius interior. Add accents that contrast with the primary color to create visual balance. If your walls are a warm color, don’t forget to add accent in cold colors (furniture, art, décor). A good practice is too use a complementary color scheme.
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.
In addition, natural‑light temperature depends on its direction:
| Direction of sunlight | Visible temp. | Hue | Duration |
|---|---|---|---|
| North | Cool | Bluish | All day |
| East | Warm | Yellow | Before noon |
| West | Warm | Orange‑red | After noon |
| South | Warm | Orange‑yellow | All day |
Artificial Lighting. When choosing bulbs, pay attention to their color‑temperature (Kelvins).
Use the slider to see how this Grey shade looks under different lighting:


4000K
Coordinating colors.
Colors that go with Dulux Deep Fossil:
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
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. To copy the code, just click the icon to the right of it.
| Format | Code | |
|---|---|---|
| HEX | #8F908F | |
| RGB Decimal | 143, 144, 143 | |
| RGB Percent | 56.08%, 56.47%, 56.08% | |
| HSV | Hue: 120° Saturation: 0.69% Value: 56.47% | |
| HSL | hsl(120, 0, 56) | |
| CMYK | Cyan: 0.69 Magenta: 0.0 Yellow: 0.69 Key: 43.53 | |
| YIQ | Y: 143.587 I: -0.275 Q: -0.523 | |
| XYZ | X: 26.258 Y: 27.769 Z: 29.956 | |
| CIE Lab | L:59.68 a:-0.562 b:0.404 | |
| CIE Luv | L:59.68 u:-0.512 v:0.666 | |
| Decimal | 9408655 | |
| Hunter Lab | 52.697, -3.276, 3.184 |
Color equivalents
272
Plummet
Farrow and Ball

114
Mid Lead Colour
Little Greene

RAL 7042
Traffic grey A
RAL Classic

Storm Clearing
Dulux
30BB 31/022
Natural Slate
Dulux

RAL 7045
Telegrey 1
RAL Classic

Grey
Dulux
30BG 31/022
Quartz Flint 1
Dulux
CC7
Stoke
Farrow and Ball

RAL 7036
Platinum grey
RAL Classic

RAL 7004
Signal grey
RAL Classic

250
Arquerite
Little Greene

RAL 9022
Pearl light grey
RAL Classic

RAL 9007
Grey aluminium
RAL Classic

Undiscovered Forest
Dulux
30BB 31/043
Mineral Haze 1
Dulux
RAL 7030
Stone grey
RAL Classic

00NN 37/000
Night Jewels 4
Dulux
























