Behr Coal Mine N540-7
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| Code: | N540-7 |
| Name: | Coal Mine |
| Brand: | Behr |
What color is Behr Coal Mine?
Behr Coal Mine N540-7 is a deep, muted charcoal gray with a noticeable cool slate-blue cast. Its low saturation keeps it from reading overtly blue, while the dark value gives walls and built-ins a grounded, architectural look. In daylight, Coal Mine can show more of its blue-gray character; under warm lamps, it appears softer and closer to a balanced charcoal. It is especially effective on cabinetry, interior doors, fireplace surrounds, or a study wall paired with warm white trim. Natural oak, black metal, aged brass, pale stone, and creamy off-whites provide useful contrast without competing with this shade.
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What are Behr Coal Mine undertones?
Coal Mine is a deep, very muted plum-gray. The HEX sample has a subtle purple bias, but its low chroma turns that hue into a neutral-looking color rather than a clear purple. Warm light may bring out its red or mauve side, while cool daylight can make the violet direction clearer.
HEX value:
RGB code:
84, 85, 93
Is Behr Coal Mine cool or warm?
With a hue of 233°, this black leans cool, but it is near the neutral line and may feel warmer in certain lighting.
N540-7 Coal Mine HSL code: 233, 5%, 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 Coal Mine
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 in Kelvins.
Use the slider to see how this black shade looks under different lighting:


4000K
Coordinating colors.
Colors that go with Behr Coal Mine:
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
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 Coal Mine with a blue hue, complementary colors are those with a orange hue close to 53, such as Behr Greywood and Aged Olive.
LRV of Coal Mine
Coal Mine has an LRV of 9.45% and refers to Dark colors which means that this color almost does not reflect light. Why LRV is important?
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 9.45%, 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
| Format | Code |
|---|---|
| HEX | #54555d |
| RGB Decimal | 84, 85, 93 |
| RGB Percent | 32.94%, 33.33%, 36.47% |
| HSV | Hue: 233° Saturation: 9.68% Value: 36.47% |
| HSL | hsl(233, 5, 35) |
| CMYK | Cyan: 9.68 Magenta: 8.6 Yellow: 0.0 Key: 63.53 |
| YIQ | Y: 85.613 I: -3.167 Q: 2.278 |
| XYZ | X: 8.88 Y: 9.172 Z: 11.656 |
| CIE Lab | L:36.313 a:1.389 b:-4.767 |
| CIE Luv | L:36.313 u:-0.973 v:-6.298 |
| Decimal | 5526877 |
| Hunter Lab | 30.285, -0.662, -1.618 |
Color equivalents
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