Benjamin Moore Sea Star 2123-30

Contents

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Benjamin Moore Sea Star for bathroom (1 photo)
Benjamin Moore 2123-30 on kitchen cabinets (1 photo)
Sea Star for exterior (1 photo)
Benjamin Moore Sea Star reviews (4 photos)
What are Benjamin Moore Sea Star undertones?
Is Sea Star 2123-30 cool or warm?
How light temperature affects on Sea Star
Monochromatic color scheme
Complementary color scheme
Color comparison and matching
LRV of Sea Star 2123-30
Color codes
Color equivalents

Official page:	Sea Star 2123-30
Code:	2123-30
Name:	Sea Star
Brand:	Benjamin Moore

What color is Benjamin Moore Sea Star?

Benjamin Moore Sea Star 2123-30 is a muted blue-green with a noticeable gray cast, giving it a softened, medium-light presence on the wall. Its equal blue and green influence keeps the color cool, while the subdued saturation prevents it from reading overly coastal or bright. In clear daylight, Sea Star shows more of its blue-green character; in dimmer rooms, it can settle into a calm slate-gray impression. It suits bathrooms, bedrooms, and built-in cabinetry where a quiet wash of color is wanted without strong contrast. Pair it with warm off-whites, charcoal details, weathered oak, or brushed brass for a grounded finish.

Benjamin Moore 2123-30 for bathroom

Looking for inspiration for your dream bathroom renovation project? These beautiful handpicked photos will show you this delightfully cool mid-tone blue real bathrooms.

@mhi.painting

Benjamin Moore 2123-30 on kitchen cabinets

Want a stylish kitchen? View real-life photo examples of this fascinating cool blue hue is paired with backsplashes, countertops, and hardware.

Benjamin Moore Sea Star Kitchen Cabinets

@foxtailpainting

Sea Star for exterior

Looking for a fresh new look for your house exterior or starting from skretch? We’ve collected pictures of real-life homes that have been painted with this cool blue hue. Find inspiration for your house’s exterior, front doors, gates, shutters, frames or windows.

@kristanmullane

Benjamin Moore Sea Star reviews (4 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.

@harmonyhaus

@harmonyhaus

@ahn.gim

@ahn.gim

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What are Benjamin Moore Sea Star undertones?

Sea Star is a mid-light, very muted teal that reads as a soft blue-green with a noticeable gray cast. Its visible bias leans slightly green and blue, but the low saturation keeps that shift subtle rather than vivid. Benjamin Moore describes it as blending green, blue, and gray, which matches its overall blue-green family and neutral-leaning appearance. Warm artificial light may bring forward a softer, grayer green cast, while cool daylight can make its blue-teal side appear a little clearer.

Manufacturer information used in this description: official color page.

HEX value:

#889E9E

RGB code:

136, 158, 158

Is Benjamin Moore Sea Star cool or warm?

warm

cool

With a hue of 180°, this Blue leans cool, but it is near the neutral line and may feel warmer in certain lighting.

2123-30 Sea Star HSL code: 180, 10%, 58%

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 Sea Star

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 Sea Star:

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

2123-30
Sea Star

Darker shades

2123-30
Sea Star

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 Sea Star with a green hue, complementary colors are those with a red hue close to 0, such as Benjamin Moore Quietly Violet and Desert Shadows.

2123-30
Sea Star

Compare
Benjamin Moore
Sea Star 2123-30
to any other colors

Benjamin Moore
Sea Star 2123-30
color equivalents

LRV of Sea Star

Sea Star has an LRV of 32.99% and refers to Medium colors that reflect a lot of 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 32.99%, 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	#889E9E
RGB Decimal	136, 158, 158
RGB Percent	53.33%, 61.96%, 61.96%
HSV	Hue: 180° Saturation: 13.92% Value: 61.96%
HSL	hsl(180, 10, 58)
CMYK	Cyan: 13.92 Magenta: 0.0 Yellow: 0.0 Key: 38.04
YIQ	Y: 151.422 I: -13.11 Q: -4.654
XYZ	X: 28.55 Y: 32.156 Z: 37.041
CIE Lab	L:63.472 a:-7.694 b:-2.597
CIE Luv	L:63.472 u:-11.753 v:-2.53
Decimal	8953502
Hunter Lab	56.706, -9.367, 0.966