Benjamin Moore River Rock 2139-10
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| Official page: | River Rock 2139-10 |
| Code: | 2139-10 |
| Name: | River Rock |
| Brand: | Benjamin Moore |
What color is Benjamin Moore River Rock?
Benjamin Moore River Rock 2139-10 is a deep, muted charcoal-brown with an unmistakable olive cast. Its low-light value gives walls, cabinetry, or a front door a grounded, substantial presence without reading as black. In brighter natural light, the earthy green-brown undertone becomes easier to notice; at night, it can settle into a nearly blackened taupe. Pair River Rock with warm off-whites, aged brass, natural oak, and textured linen to bring out its organic side. It is especially effective on built-ins, kitchen islands, and small accent walls where its depth can be appreciated up close.
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What are Benjamin Moore River Rock undertones?
River Rock is a deep, very muted dark olive-brown. The HEX sample has a subtle yellow bias, but its low chroma turns that hue into a neutral-looking color rather than a clear yellow. Warm bulbs can make it look creamier or more golden, while cool daylight may mute that warmth and pull it closer to beige or greige.
HEX value:
RGB code:
70, 66, 51
Is Benjamin Moore River Rock cool or warm?
warm
cool
With a hue of 47°, this brown reads warm on the HSL color wheel.
2139-10 River Rock HSL code: 47, 16%, 24%
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 River Rock
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 brown shade looks under different lighting:
Coordinating colors.
Colors that go with Benjamin Moore River Rock:
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 River Rock with a orange hue, complementary colors are those with a blue hue close to 227, such as Benjamin Moore Bachelor Blue and Approaching Storm.
LRV of River Rock
River Rock has an LRV of 6.6% 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 6.6%, 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 | #464233 |
| RGB Decimal | 70, 66, 51 |
| RGB Percent | 27.45%, 25.88%, 20.00% |
| HSV | Hue: 47° Saturation: 27.14% Value: 27.45% |
| HSL | hsl(47, 16, 24) |
| CMYK | Cyan: 0.0 Magenta: 5.71 Yellow: 27.14 Key: 72.55 |
| YIQ | Y: 65.486 I: 7.204 Q: -3.822 |
| XYZ | X: 5.072 Y: 5.438 Z: 3.913 |
| CIE Lab | L:27.947 a:-1.19 b:9.767 |
| CIE Luv | L:27.947 u:3.04 v:10.582 |
| Decimal | 4604467 |
| Hunter Lab | 23.319, -1.987, 6.373 |
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