Dulux Cobalt Night / Black Stillness / Lights Out / 30BB 05/022

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What are Dulux Cobalt Night undertones?
Is Cobalt Night 30BB 05/022 cool or warm?
How light temperature affects on Cobalt Night
Monochromatic color scheme
Complementary color scheme
Color comparison and matching
Color codes
Color equivalents

Code:	30BB 05/022
Name:	Cobalt Night
Brand:	Dulux

What color is Dulux Cobalt Night?

Dulux Cobalt Night 30BB 05/022 is a very deep charcoal grey, close to black but with enough softness to show its colour on a wall. Its #343639 value gives it a subtly cool, smoke-toned appearance rather than a warm brown-black cast. In bright daylight, Cobalt Night can read as a clean dark grey, while lower evening light makes it appear denser and more dramatic. Use it for a study, dining room, media wall, or painted cabinetry where a strong dark surface feels appropriate. Pair it with chalky whites, pale grey-blue tones, brushed steel, black metal, and light oak to keep the contrast clear.

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What are Dulux Cobalt Night undertones?

Cobalt Night is a deep, near-neutral near-black. 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:

#343639

RGB code:

52, 54, 57

Is Dulux Cobalt Night cool or warm?

warm

cool

With a hue of 216°, this black leans cool, but it is near the neutral line and may feel warmer in certain lighting.

30BB 05/022 Cobalt Night HSL code: 216, 5%, 21%

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 Cobalt Night

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

Sunrise

Morning

Noon

Afternoon

Sunset

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 in Kelvins.
Use the slider to see how this black shade looks under different lighting:

4000K

2000K

3000K

4000K

5000K

6000K

7000K

Coordinating colors.
Colors that go with Dulux Cobalt Night:

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

30BB 05/022
Cobalt Night

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 Cobalt Night with a blue hue, complementary colors are those with a orange hue close to 36, such as Dulux Chalk Blush 3 and Vintage Coins.

30BB 05/022
Cobalt Night

Compare
Dulux
Cobalt Night 30BB 05/022
to any other colors

Dulux
Cobalt Night 30BB 05/022
color equivalents

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

Format	Code
HEX	#343639
RGB Decimal	52, 54, 57
RGB Percent	20.39%, 21.18%, 22.35%
HSV	Hue: 216° Saturation: 8.77% Value: 22.35%
HSL	hsl(216, 5, 21)
CMYK	Cyan: 8.77 Magenta: 5.26 Yellow: 0.0 Key: 77.65
YIQ	Y: 53.744 I: -2.156 Q: 0.511
XYZ	X: 3.474 Y: 3.664 Z: 4.394
CIE Lab	L:22.527 a:-0.138 b:-2.174
CIE Luv	L:22.527 u:-1.117 v:-2.309
Decimal	3421753
Hunter Lab	19.141, -1.103, -0.212