Gossamer Blue vs Tranquil Dawn

Gossamer BlueBenjamin MoorevsTranquil DawnDuluxΔE 7.5Noticeable difference

Where Gossamer Blue belongs to Benjamin Moore's range, Tranquil Dawn is a Dulux color. Hue-wise, Gossamer Blue belongs to the blue family and Tranquil Dawn to the green-grey family. They have nearly identical light reflectance values (55 vs 55), so they'll read as similarly Medium in most lighting conditions. Gossamer Blue runs blue while Tranquil Dawn is decidedly neutral, which means they'll respond very differently to warm vs cool light sources. The ΔE 7.5 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 5 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.

Gossamer Blue vs Tranquil Dawn in Real Spaces

5 real rooms side by side. Gossamer Blue and Tranquil Dawn 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 temperature contrast between Tranquil Dawn and Gossamer Blue is what sets these apart most in this context.

Gossamer Blue2123-40 Living Room

@stefculbertson

Tranquil DawnDulux Tranquil Dawn living room fireplace review

@gwynfa_renovation

Bedroom

The context that matters most in a bedroom is how a color reads under a bedside lamp at night, not under noon daylight. Tranquil Dawn brings more warmth to the space, while Gossamer Blue keeps things cooler and crisper.

Gossamer BlueBm Gossamer Blue Bedroom

@gohophoto

Tranquil DawnTranquil Dawn bedroom color review

@our_tooting_terrace

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. Tranquil Dawn brings more warmth to the space, while Gossamer Blue keeps things cooler and crisper.

Gossamer BlueBenjamin Moore Gossamer Blue Bathroom Paint

@jamiecostarowe11

Tranquil DawnDulux Tranquil Dawn bathroom paint

@thesuffolkmanse

Mudroom

Mudrooms are seen in passing, often under whatever light comes through the door — a context that favors colors with some depth. Gossamer Blue reads more restrained here, while Tranquil Dawn adds a sense of enclosure and warmth.

Gossamer BlueLaundry Room

@bc_homes_inc

Tranquil DawnDulux Tranquil Dawn 45GY 55/052 laundry room

@29_and_the_lodge

Kitchen Cabinets

Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Tranquil Dawn brings more warmth to the space, while Gossamer Blue keeps things cooler and crisper.

Gossamer Blue2123-40 Kitchen Cabinets

@gregoryspaintandflooring

Tranquil DawnTranquil Dawn kitchen cabinets color review

@everythingsrosiedecorating

Color Details

Gossamer Blue
Benjamin Moore · 2123-40
Hex#B3C8C8
LRV55.0
BrandBenjamin Moore
Number2123-40
UndertoneBlue
TemperatureCool
BrightnessMedium
Tranquil Dawn
Dulux · 45GY 55/052
Hex#BDC3B9
LRV55.0
BrandDulux
Number45GY 55/052
Undertone
TemperatureNeutral
BrightnessMedium

Gossamer Blue vs Tranquil Dawn Simulated Comparison

5 simulated room previews — drag the slider on each to see Gossamer Blue on one side and Tranquil Dawn 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 Gossamer Blue comparisons

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

White Dove
Gossamer Blue
White Dove
Benjamin Moore
White Dove
LRV 83

White Dove is the lighter choice

Ammonite
Gossamer Blue
Ammonite
Farrow & Ball
Ammonite
LRV 69

Ammonite reads noticeably lighter

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

Gossamer Blue is the lighter choice

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

Gossamer Blue reads slightly lighter

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

Gossamer Blue reads noticeably lighter

Mizzle
Gossamer Blue
Mizzle
Farrow & Ball
Mizzle
LRV 52

Gossamer Blue reads slightly lighter

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

Agreeable Gray reads slightly lighter

Denim Drift
Gossamer Blue
Denim Drift
Dulux
Denim Drift
LRV 27

Gossamer Blue is the lighter choice

Balboa Mist
Gossamer Blue
Balboa Mist
Benjamin Moore
Balboa Mist
LRV 66

Balboa Mist reads slightly lighter

Vintage Vogue
Gossamer Blue
Vintage Vogue
Benjamin Moore
Vintage Vogue
LRV 12

Gossamer Blue is the lighter choice

Pale Green
Gossamer Blue
Pale Green
RAL ClassicClassic
Pale Green
LRV 31

Gossamer Blue reads noticeably lighter

Pine Needle
Gossamer Blue
Pine Needle
Dulux
Pine Needle
LRV 7

Gossamer Blue is the lighter choice

Cement grey
Gossamer Blue
Cement grey
RAL ClassicClassic
Cement grey
LRV 24

Gossamer Blue is the lighter choice

Just Walnut
Gossamer Blue
Just Walnut
Dulux
Just Walnut
LRV 72

Just Walnut reads noticeably lighter

Black grey
Gossamer Blue
Black grey
RAL ClassicClassic
Black grey
LRV 6

Gossamer Blue is the lighter choice

Piazza
Gossamer Blue
Piazza
Tikkurila
Piazza
LRV 65

Piazza reads slightly lighter

Humble Yellow
Gossamer Blue
Humble Yellow
Jotun
Humble Yellow
LRV 57

Nearly identical in tone

Windmill Lane
Gossamer Blue
Windmill Lane
Little Greene
Windmill Lane
LRV 31

Gossamer Blue reads noticeably lighter

Senses
Gossamer Blue
Senses
Jotun
Senses
LRV 41

Gossamer Blue reads noticeably lighter

Lamp Black
Gossamer Blue
Lamp Black
Little Greene
Lamp Black
LRV 3

Gossamer Blue is the lighter choice

Washed Linen
Gossamer Blue
Washed Linen
Jotun
Washed Linen
LRV 55

Nearly identical in tone

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

Gossamer Blue is the lighter choice

Thames Fog
Gossamer Blue
Thames Fog
Valspar
Thames Fog
LRV 27

Gossamer Blue is the lighter choice

Ocean Abyss
Gossamer Blue
Ocean Abyss
Behr
Ocean Abyss
LRV 7

Gossamer Blue is the lighter choice

Classic Silver
Gossamer Blue
Classic Silver
Behr
Classic Silver
LRV 48

Gossamer Blue reads slightly lighter

Teton Blue
Gossamer Blue
Teton Blue
Behr
Teton Blue
LRV 31

Gossamer Blue reads noticeably lighter

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

RAL 110-2 reads noticeably lighter

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

RAL 110-1 reads noticeably lighter

Paper
Gossamer Blue
Paper
Tikkurila
Paper
LRV 88

Paper is the lighter choice

Passageway
Gossamer Blue
Passageway
Valspar
Passageway
LRV 14

Gossamer Blue is the lighter choice