Hidden Sea Glass vs Grey Blue

Hidden Sea GlassBehrvsGrey BlueRAL ClassicΔE 55.3Very different colors

Hidden Sea Glass is a Behr color while Grey Blue comes from RAL Classic. Hidden Sea Glass reads as blue, while Grey Blue reads as blue-grey — two distinct hue families, not close cousins. At LRV 45 vs 7, Hidden Sea Glass will read as the brighter of the two — a 38-point gap that matters most in north-facing or low-light rooms. At ΔE 55.3, these are genuinely distinct colors — a strong contrast if used together, or a meaningful choice between two different directions. Below you'll find 3 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.

Hidden Sea Glass vs Grey Blue in Real Spaces

3 real rooms side by side. Seeing Hidden Sea Glass and Grey Blue in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.

Bedroom

Bedroom walls are often seen under warm artificial light, a context that shifts both colors from how they look on a chip. The LRV gap is large enough that Hidden Sea Glass will make the room feel meaningfully brighter than Grey Blue would.

Hidden Sea GlassBehr Hidden Sea Glass bedroom picture

@thisbvicci78

Grey BlueRAL Classic Grey Blue 5008 bedroom

@huisjevanalles

House

At full exterior scale, the difference between these two colors becomes much easier to judge than from a small chip. The LRV gap is large enough that Hidden Sea Glass will make the room feel meaningfully brighter than Grey Blue would.

Hidden Sea GlassHidden Sea Glass exterior paint review

@skcustombuilds

Grey BlueRAL Classic Grey Blue 5008 house exterior

@bungalow_in_brokdorf

Front Door

Front doors are seen in isolation against the rest of the facade, which makes them a high-stakes surface where even subtle differences matter. Hidden Sea Glass returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.

Hidden Sea GlassBehr Hidden Sea Glass front door color

@hershbergerpainting

Grey BlueRAL Classic Grey Blue 5008 front door

@waclawik_okna

Color Details

Hidden Sea Glass
Behr · P450-4
Hex#6fd1c9
LRV45.0
BrandBehr
NumberP450-4
UndertoneBlue
TemperatureCool
BrightnessMedium
Grey Blue
RAL Classic · RAL 5008
Hex#464c56
LRV7.5
BrandRAL Classic
NumberRAL 5008
Undertone
Temperature
BrightnessDark

Hidden Sea Glass vs Grey Blue Simulated Comparison

5 simulated room previews — drag the slider on each to see Hidden Sea Glass on one side and Grey Blue 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 Hidden Sea Glass comparisons

See how Hidden Sea Glass stacks up against other well-photographed colors across different brands and tones.

White Dove
Hidden Sea Glass
White Dove
Benjamin Moore
White Dove
LRV 83

White Dove is the lighter choice

Ammonite
Hidden Sea Glass
Ammonite
Farrow & Ball
Ammonite
LRV 69

Ammonite reads noticeably lighter

Iron Ore
Hidden Sea Glass
Iron Ore
Sherwin-Williams
Iron Ore
LRV 6

Hidden Sea Glass is the lighter choice

Purbeck Stone
Hidden Sea Glass
Purbeck Stone
Farrow & Ball
Purbeck Stone
LRV 52

Purbeck Stone reads slightly lighter

Evergreen Fog
Hidden Sea Glass
Evergreen Fog
Sherwin-Williams
Evergreen Fog
LRV 30

Hidden Sea Glass reads noticeably lighter

Mizzle
Hidden Sea Glass
Mizzle
Farrow & Ball
Mizzle
LRV 52

Mizzle reads slightly lighter

Agreeable Gray
Hidden Sea Glass
Agreeable Gray
Sherwin-Williams
Agreeable Gray
LRV 60

Agreeable Gray reads noticeably lighter

Denim Drift
Hidden Sea Glass
Denim Drift
Dulux
Denim Drift
LRV 27

Hidden Sea Glass reads noticeably lighter

Tranquil Dawn
Hidden Sea Glass
Tranquil Dawn
Dulux
Tranquil Dawn
LRV 55

Tranquil Dawn reads slightly lighter

Balboa Mist
Hidden Sea Glass
Balboa Mist
Benjamin Moore
Balboa Mist
LRV 66

Balboa Mist reads noticeably lighter

Vintage Vogue
Hidden Sea Glass
Vintage Vogue
Benjamin Moore
Vintage Vogue
LRV 12

Hidden Sea Glass is the lighter choice

Pale Green
Hidden Sea Glass
Pale Green
RAL ClassicClassic
Pale Green
LRV 31

Hidden Sea Glass reads noticeably lighter

Pine Needle
Hidden Sea Glass
Pine Needle
Dulux
Pine Needle
LRV 7

Hidden Sea Glass is the lighter choice

Cement grey
Hidden Sea Glass
Cement grey
RAL ClassicClassic
Cement grey
LRV 24

Hidden Sea Glass reads noticeably lighter

Black grey
Hidden Sea Glass
Black grey
RAL ClassicClassic
Black grey
LRV 6

Hidden Sea Glass is the lighter choice

Piazza
Hidden Sea Glass
Piazza
Tikkurila
Piazza
LRV 65

Piazza reads noticeably lighter

Humble Yellow
Hidden Sea Glass
Humble Yellow
Jotun
Humble Yellow
LRV 57

Humble Yellow reads slightly lighter

Windmill Lane
Hidden Sea Glass
Windmill Lane
Little Greene
Windmill Lane
LRV 31

Hidden Sea Glass reads noticeably lighter

Senses
Hidden Sea Glass
Senses
Jotun
Senses
LRV 41

Hidden Sea Glass reads slightly lighter

Lamp Black
Hidden Sea Glass
Lamp Black
Little Greene
Lamp Black
LRV 3

Hidden Sea Glass is the lighter choice

Washed Linen
Hidden Sea Glass
Washed Linen
Jotun
Washed Linen
LRV 55

Washed Linen reads slightly lighter

Tea with Florence
Hidden Sea Glass
Tea with Florence
Little Greene
Tea with Florence
LRV 18

Hidden Sea Glass is the lighter choice

Thames Fog
Hidden Sea Glass
Thames Fog
Valspar
Thames Fog
LRV 27

Hidden Sea Glass reads noticeably lighter

Ocean Abyss
Hidden Sea Glass
Ocean Abyss
Behr
Ocean Abyss
LRV 7

Hidden Sea Glass is the lighter choice

Classic Silver
Hidden Sea Glass
Classic Silver
Behr
Classic Silver
LRV 48

Classic Silver reads slightly lighter

Teton Blue
Hidden Sea Glass
Teton Blue
Behr
Teton Blue
LRV 31

Hidden Sea Glass reads noticeably lighter

RAL 110-2
Hidden Sea Glass
RAL 110-2
RAL EffectEffect
RAL 110-2
LRV 72

RAL 110-2 is the lighter choice

RAL 110-1
Hidden Sea Glass
RAL 110-1
RAL EffectEffect
RAL 110-1
LRV 80

RAL 110-1 is the lighter choice

Paper
Hidden Sea Glass
Paper
Tikkurila
Paper
LRV 88

Paper is the lighter choice

Passageway
Hidden Sea Glass
Passageway
Valspar
Passageway
LRV 14

Hidden Sea Glass is the lighter choice