Dulux Subzero Blue 50BB 08/257

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Code:50BB 08/257
Name:Subzero Blue
Brand:Dulux

What color is Dulux Subzero Blue?

Dulux Subzero Blue 50BB 08/257 is a deep, cool-toned blue with a muted, slightly smoky cast rather than a bright navy finish. Its substantial depth gives walls a grounded look, while the blue remains clear enough to hold its character in daylight. In bright rooms, Subzero Blue can read as a softened medium-dark blue; under lower or warmer lighting, it takes on a more inky, shadowed appearance. Use it on a study wall, dining room cabinetry, or an exterior door where a strong color is wanted without high saturation. Crisp white trim, pale grey-blue textiles, natural oak, brushed nickel, and charcoal accents suit this shade particularly well.

Dulux Subzero Blue reviews

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

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What are Dulux Subzero Blue undertones?

Subzero Blue is a deep, soft slate blue. The HEX sample leans blue; this describes its measurable digital hue direction, not a hidden paint pigment. Warm bulbs may gray the color down, while cool daylight usually makes its blue or teal direction clearer.

HEX value:

#39537A

RGB code:

57, 83, 122

Is Dulux Subzero Blue cool or warm?

warm
cool
Color wheel

With a hue of 216°, this dark blue reads cool based on its HSL hue position.

50BB 08/257 Subzero Blue HSL code: 216, 36%, 35%

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 Subzero Blue

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 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 dark blue shade looks under different lighting:

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

Coordinating colors.
Colors that go with Dulux Subzero Blue:

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

Darker shades

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

LRV of Subzero Blue

Subzero Blue has an LRV of 8.24% and refers to Dark colors which means that this color almost does not reflect light. Why LRV is important?

Light Reflectance Value scale illustration

Light Reflectance Value measures the amount of visible and usable light that reflects from a painted surface.
Simply put, the higher the LRV of a paint color, the brighter the room you will get.
The scale goes from 0% (absolute black, absorbing all light) to 100% (pure white, reflecting all light).

Act like a pro: When choosing paint with an LRV of 8.24%, pay attention to your bulbs' brightness. Light brightness is measured in lumens. The lower the paint's LRV, the higher lumen level you need. Every square foot of room needs at least 40 lumens. That means for a 200 ft2 living room you'll need about 8000 lumens of light – e.g., eight 1000 lm bulbs.

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#39537a
RGB Decimal57, 83, 122
RGB Percent22.35%, 32.55%, 47.84%
HSVHue: 216° Saturation: 53.28% Value: 47.84%
HSLhsl(216, 36, 35)
CMYKCyan: 53.28 Magenta: 31.97 Yellow: 0.0 Key: 52.16
YIQY: 79.672 I: -28.026 Q: 6.637
XYZX: 8.292 Y: 8.461 Z: 19.603
CIE LabL:34.925 a:2.253 b:-25.131
CIE LuvL:34.925 u:-12.206 v:-34.438
Decimal3756922
Hunter Lab29.088, -0.018, -19.597

Color equivalents