Blue Note vs Sea Serpent

Blue NoteBenjamin MoorevsSea SerpentSherwin-WilliamsΔE 0.8Imperceptible difference

Where Blue Note belongs to Benjamin Moore's range, Sea Serpent is a Sherwin-Williams color. Blue Note reads as blue-grey, while Sea Serpent reads as blue — two distinct hue families, not close cousins. They have nearly identical light reflectance values (9 vs 7), so they'll read as similarly Dark in most lighting conditions. Blue Note runs blue while Sea Serpent is decidedly cool, which means they'll respond very differently to warm vs cool light sources. At ΔE 0.8, these are close — the kind of difference that matters when choosing between them, but doesn't read strongly in a finished room. Below you'll find 6 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.

Blue Note vs Sea Serpent in Real Spaces

6 real rooms side by side. Blue Note and Sea Serpent are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.

Living Room

In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The two are close enough that the choice comes down to finer qualities — undertone, texture, what the color sits next to.

Blue NoteBenjamin Moore 2129-30 living room paint

@thebuzzardfamily

Sea SerpentSea Serpent Living Room

@mybudgetrecipes

Bedroom

The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.

Blue NoteBenjamin Moore Blue Note bedroom accent wall color

@alderandsand

Sea SerpentSea Serpent Bedroom

@mybudgetrecipes

Dining Room

A dining room lit by a dimmed pendant or candles is one of the most forgiving environments for paint — warm light softens almost everything. In photos like these you're seeing the difference at its most direct. In a finished room, the distinction is there but not dramatic.

Blue NoteBenjamin Moore Blue Note dining room paint

@lasoldesign

Sea SerpentSW Sea Serpent dining room color review

@thehouseonbarnlane

Bathroom

Bathrooms are one of the few spaces where you're genuinely enclosed by the paint color, which makes the choice between these two more consequential. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.

Blue NoteBenjamin Moore Blue Note bathroom review

@makingspacesnet

Sea SerpentSea Serpent Bathroom

@mybudgetrecipes

House

Seen across an entire facade, subtle tonal differences become pronounced. What reads as nearly the same on a chip often reads as clearly different at scale. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.

Blue NoteBenjamin Moore Blue Note exterior review

@fromhorrortohygge

Sea SerpentSea Serpent House

@mybudgetrecipes

Kitchen Cabinets

Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. At this scale the difference is subtle — you'd need them side by side, as shown here, to reliably tell them apart.

Blue NoteBenjamin Moore 2129-30 kitchen cabinets paint

@fwfix7

Sea SerpentBlue cabinets Sherwin Williams Sea Serprent SW 7615 review

@refreshinglychic

Color Details

Blue Note
Benjamin Moore · 2129-30
Hex#404B54
LRV9.0
BrandBenjamin Moore
Number2129-30
UndertoneBlue
TemperatureCool
BrightnessDark
Sea Serpent
Sherwin-Williams · 7615
Hex#3E4B54
LRV6.7
BrandSherwin-Williams
Number7615
Undertone
TemperatureCool
BrightnessDark

Blue Note vs Sea Serpent Simulated Comparison

5 simulated room previews — drag the slider on each to see Blue Note on one side and Sea Serpent on the other.

Bathroom
Bedroom
House
Kitchen Cabinets
Living Room

Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.

More Blue Note comparisons

See how Blue Note stacks up against other well-photographed colors across different brands and tones.

White Dove
Blue Note
White Dove
Benjamin Moore
White Dove
LRV 83

White Dove is the lighter choice

Ammonite
Blue Note
Ammonite
Farrow & Ball
Ammonite
LRV 69

Ammonite is the lighter choice

Iron Ore
Blue Note
Iron Ore
Sherwin-Williams
Iron Ore
LRV 6

Blue Note reads slightly lighter

Purbeck Stone
Blue Note
Purbeck Stone
Farrow & Ball
Purbeck Stone
LRV 52

Purbeck Stone is the lighter choice

Evergreen Fog
Blue Note
Evergreen Fog
Sherwin-Williams
Evergreen Fog
LRV 30

Evergreen Fog reads noticeably lighter

Mizzle
Blue Note
Mizzle
Farrow & Ball
Mizzle
LRV 52

Mizzle is the lighter choice

Agreeable Gray
Blue Note
Agreeable Gray
Sherwin-Williams
Agreeable Gray
LRV 60

Agreeable Gray is the lighter choice

Denim Drift
Blue Note
Denim Drift
Dulux
Denim Drift
LRV 27

Denim Drift reads noticeably lighter

Tranquil Dawn
Blue Note
Tranquil Dawn
Dulux
Tranquil Dawn
LRV 55

Tranquil Dawn is the lighter choice

Balboa Mist
Blue Note
Balboa Mist
Benjamin Moore
Balboa Mist
LRV 66

Balboa Mist is the lighter choice

Vintage Vogue
Blue Note
Vintage Vogue
Benjamin Moore
Vintage Vogue
LRV 12

Nearly identical in tone

Pale Green
Blue Note
Pale Green
RAL ClassicClassic
Pale Green
LRV 31

Pale Green reads noticeably lighter

Pine Needle
Blue Note
Pine Needle
Dulux
Pine Needle
LRV 7

Nearly identical in tone

Cement grey
Blue Note
Cement grey
RAL ClassicClassic
Cement grey
LRV 24

Cement grey reads noticeably lighter

Black grey
Blue Note
Black grey
RAL ClassicClassic
Black grey
LRV 6

Nearly identical in tone

Piazza
Blue Note
Piazza
Tikkurila
Piazza
LRV 65

Piazza is the lighter choice

Humble Yellow
Blue Note
Humble Yellow
Jotun
Humble Yellow
LRV 57

Humble Yellow is the lighter choice

Windmill Lane
Blue Note
Windmill Lane
Little Greene
Windmill Lane
LRV 31

Windmill Lane reads noticeably lighter

Senses
Blue Note
Senses
Jotun
Senses
LRV 41

Senses is the lighter choice

Lamp Black
Blue Note
Lamp Black
Little Greene
Lamp Black
LRV 3

Blue Note reads slightly lighter

Washed Linen
Blue Note
Washed Linen
Jotun
Washed Linen
LRV 55

Washed Linen is the lighter choice

Tea with Florence
Blue Note
Tea with Florence
Little Greene
Tea with Florence
LRV 18

Tea with Florence reads slightly lighter

Thames Fog
Blue Note
Thames Fog
Valspar
Thames Fog
LRV 27

Thames Fog reads noticeably lighter

Ocean Abyss
Blue Note
Ocean Abyss
Behr
Ocean Abyss
LRV 7

Nearly identical in tone

Classic Silver
Blue Note
Classic Silver
Behr
Classic Silver
LRV 48

Classic Silver is the lighter choice

Teton Blue
Blue Note
Teton Blue
Behr
Teton Blue
LRV 31

Teton Blue reads noticeably lighter

RAL 110-2
Blue Note
RAL 110-2
RAL EffectEffect
RAL 110-2
LRV 72

RAL 110-2 is the lighter choice

RAL 110-1
Blue Note
RAL 110-1
RAL EffectEffect
RAL 110-1
LRV 80

RAL 110-1 is the lighter choice

Paper
Blue Note
Paper
Tikkurila
Paper
LRV 88

Paper is the lighter choice

Passageway
Blue Note
Passageway
Valspar
Passageway
LRV 14

Passageway reads slightly lighter