Benjamin Moore Slate Blue / CC-818 / Early Morning / 1648

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Benjamin Moore Slate Blue reviews (6 photos)
What are Benjamin Moore Slate Blue undertones?
Is Slate Blue 1648 cool or warm?
How light temperature affects on Slate Blue
Monochromatic color scheme
Complementary color scheme
Color comparison and matching
LRV of Slate Blue 1648
Color codes
Color equivalents

Official page:	Slate Blue 1648
Code:	1648
Name:	Slate Blue
Brand:	Benjamin Moore

What color is Benjamin Moore Slate Blue?

Benjamin Moore Slate Blue 1648 is a softened blue-gray with a cool cast and a gently muted, mid-light appearance. Its low saturation keeps the color from reading overly nautical or bright, giving walls a quiet wash of blue with noticeable gray restraint. In daylight, Slate Blue can look cleaner and airier, while warmer evening light tends to bring forward its softer gray side. It suits bedrooms, bathrooms, and home offices, particularly alongside crisp white trim, pale oak, weathered wood, brushed nickel, or charcoal accents. For a more grounded look, pair this shade with warm off-whites and natural linen textures rather than stark, icy whites.

Benjamin Moore Slate Blue reviews (6 photos)

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.

Benjamin Moore Slate Blue wall paint photo

@glennyspainting

Benjamin Moore Slate Blue wall paint review

@glennyspainting

@jillcalo

@jillcalo

Benjamin Moore Slate Blue painted cabinets color

@jillcalo

Benjamin Moore Slate Blue bathroom vanity color

@jemwoodworking

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What are Benjamin Moore Slate Blue undertones?

Slate Blue reads as a mid-light, very muted blue with a noticeable gray cast. In the supplied digital sample, its blue direction carries a subtle green-leaning bias, but that shift is slight and should be viewed as a relative impression rather than a fixed undertone. Benjamin Moore describes it as a versatile blue reminiscent of weathered slate, which fits its softened, gray-blue appearance. Warm artificial light may make the gray cast feel a little softer, while cool daylight can make its blue character appear more apparent.

Manufacturer information used in this description: official color page.

HEX value:

#9BB1BB

RGB code:

155, 177, 187

Is Benjamin Moore Slate Blue cool or warm?

warm

cool

With a hue of 199°, this Blue reads cool based on its HSL hue position.

1648 Slate Blue HSL code: 199, 19%, 67%

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 Slate 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 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 Blue shade looks under different lighting:

4000K

2000K

3000K

4000K

5000K

6000K

7000K

Coordinating colors.
Colors that go with Benjamin Moore Slate Blue:

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

1648
Slate Blue

Darker shades

1648
Slate Blue

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 Slate Blue with a green hue, complementary colors are those with a red hue close to 19, such as Benjamin Moore Quietly Violet and Desert Shadows.

1648
Slate Blue

Compare
Benjamin Moore
Slate Blue 1648
to any other colors

Benjamin Moore
Slate Blue 1648
color equivalents

LRV of Slate Blue

Slate Blue has an LRV of 43.21% and refers to Light Medium colors that reflect half of the incident 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 43.21%, 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	#9BB1BB
RGB Decimal	155, 177, 187
RGB Percent	60.78%, 69.41%, 73.33%
HSV	Hue: 199° Saturation: 17.11% Value: 73.33%
HSL	hsl(199, 19, 67)
CMYK	Cyan: 17.11 Magenta: 5.35 Yellow: 0.0 Key: 26.67
YIQ	Y: 171.562 I: -16.323 Q: -1.542
XYZ	X: 38.206 Y: 42.0 Z: 53.094
CIE Lab	L:70.871 a:-5.435 b:-7.642
CIE Luv	L:70.871 u:-12.118 v:-10.626
Decimal	10203579
Hunter Lab	64.807, -8.18, -3.209