Thundercloud Gray vs French Gray

Where Thundercloud Gray belongs to Benjamin Moore's range, French Gray is a Farrow & Ball color. Hue-wise, Thundercloud Gray belongs to the blue-grey family and French Gray to the beige-greige family. Thundercloud Gray (LRV 50) reflects noticeably more light than French Gray (LRV 43), a difference of 7 points that becomes especially apparent in rooms with limited natural light. Thundercloud Gray runs blue while French Gray is decidedly warm, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 15.1, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.

Thundercloud Gray vs French Gray in Real Spaces

2 real rooms side by side. Seeing Thundercloud Gray and French Gray in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.

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. Thundercloud Gray reads slightly lighter here — a subtle but real difference in how open the space feels.

Thundercloud Gray2124-40 Bathroom

@mudpielullaby

French GrayFarrow and Ball French Gray bathroom review

@livingwithchlo_

Kitchen Cabinets

Kitchen cabinets are constantly compared against adjacent materials, which means subtle differences between these two become much more visible. Thundercloud Gray reads slightly lighter here — a subtle but real difference in how open the space feels.

Thundercloud GrayBm Thundercloud Gray Kitchen Cabinets

@l_design_group

French GrayFrench Gray kitchen cabinets photo

@myfirstvictorianhome_247

Color Details

Thundercloud Gray
Benjamin Moore · 2124-40
Hex#B8BDC0
LRV50.2
BrandBenjamin Moore
Number2124-40
UndertoneBlue
TemperatureNeutral
BrightnessMedium
French Gray
Farrow & Ball · 18
Hex#b5b19a
LRV43.3
BrandFarrow & Ball
Number18
Undertone
TemperatureWarm
BrightnessMedium

Thundercloud Gray vs French Gray Simulated Comparison

5 simulated room previews — drag the slider on each to see Thundercloud Gray on one side and French Gray 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 Thundercloud Gray comparisons

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

Thundercloud Gray
White Dove
Thundercloud Gray
White Dove
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

White Dove reflects far more light (LRV 83 vs 50), opening up a space where Thundercloud Gray encloses it.

Thundercloud Gray
Ammonite
Thundercloud Gray
Ammonite
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50
Farrow & Ball
Ammonite
LRV 69

At LRV 69 vs 50, Ammonite is decisively the brighter choice.

Thundercloud Gray
Iron Ore
Thundercloud Gray
Iron Ore
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

Thundercloud Gray reflects far more light (LRV 50 vs 6), opening up a space where Iron Ore encloses it.

Thundercloud Gray
Purbeck Stone
Thundercloud Gray
Purbeck Stone
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

Their light reflectance is nearly identical (LRV 52 vs 50), so neither reads brighter in a room.

Thundercloud Gray
Evergreen Fog
Thundercloud Gray
Evergreen Fog
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

At LRV 50 vs 30, Thundercloud Gray is decisively the brighter choice.

Thundercloud Gray
Mizzle
Thundercloud Gray
Mizzle
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50
Farrow & Ball
Mizzle
LRV 52

With LRVs of 52 and 50, the two reflect almost the same amount of light.

Thundercloud Gray
Agreeable Gray
Thundercloud Gray
Agreeable Gray
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

A 10-point LRV gap (60 vs 50) makes Agreeable Gray the marginally brighter of the two.

Thundercloud Gray
Accessible Beige
Thundercloud Gray
Accessible Beige
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

Accessible Beige reads slightly lighter (LRV 58 vs 50), a gap that shows most in low-lit rooms.

Thundercloud Gray
Denim Drift
Thundercloud Gray
Denim Drift
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

Thundercloud Gray reflects far more light (LRV 50 vs 27), opening up a space where Denim Drift encloses it.

Thundercloud Gray
Naval
Thundercloud Gray
Naval
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50
Sherwin-Williams
Naval
LRV 4

At LRV 50 vs 4, Thundercloud Gray is decisively the brighter choice.

Thundercloud Gray
Tranquil Dawn
Thundercloud Gray
Tranquil Dawn
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

Tranquil Dawn reads slightly lighter (LRV 55 vs 50), a gap that shows most in low-lit rooms.

Thundercloud Gray
Bancha
Thundercloud Gray
Bancha
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50
Farrow & Ball
Bancha
LRV 13

Thundercloud Gray reflects far more light (LRV 50 vs 13), opening up a space where Bancha encloses it.

Thundercloud Gray
Hardwick White
Thundercloud Gray
Hardwick White
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

Thundercloud Gray reads slightly lighter (LRV 50 vs 44), a gap that shows most in low-lit rooms.

Thundercloud Gray
Pure White
Thundercloud Gray
Pure White
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

At LRV 84 vs 50, Pure White is decisively the brighter choice.

Thundercloud Gray
Artichoke
Thundercloud Gray
Artichoke
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50
Sherwin-Williams
Artichoke
LRV 21

At LRV 50 vs 21, Thundercloud Gray is decisively the brighter choice.

Balboa Mist
Thundercloud Gray
Balboa Mist
Thundercloud Gray
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

Balboa Mist reflects far more light (LRV 66 vs 50), opening up a space where Thundercloud Gray encloses it.

Thundercloud Gray
Shoji White
Thundercloud Gray
Shoji White
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

Shoji White reflects far more light (LRV 74 vs 50), opening up a space where Thundercloud Gray encloses it.

Thundercloud Gray
Snowbound
Thundercloud Gray
Snowbound
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50
Sherwin-Williams
Snowbound
LRV 83

Snowbound reflects far more light (LRV 83 vs 50), opening up a space where Thundercloud Gray encloses it.

Thundercloud Gray
Pewter Green
Thundercloud Gray
Pewter Green
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

Thundercloud Gray reflects far more light (LRV 50 vs 12), opening up a space where Pewter Green encloses it.

Thundercloud Gray
Skimming Stone
Thundercloud Gray
Skimming Stone
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

Skimming Stone reflects far more light (LRV 68 vs 50), opening up a space where Thundercloud Gray encloses it.

Thundercloud Gray
Dix Blue
Thundercloud Gray
Dix Blue
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50
Farrow & Ball
Dix Blue
LRV 41

A 9-point LRV gap (50 vs 41) makes Thundercloud Gray the marginally brighter of the two.

Thundercloud Gray
Calamine
Thundercloud Gray
Calamine
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50
Farrow & Ball
Calamine
LRV 68

At LRV 68 vs 50, Calamine is decisively the brighter choice.

Thundercloud Gray
Treron
Thundercloud Gray
Treron
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50
Farrow & Ball
Treron
LRV 25

At LRV 50 vs 25, Thundercloud Gray is decisively the brighter choice.

Thundercloud Gray
Vintage Vogue
Thundercloud Gray
Vintage Vogue
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

Thundercloud Gray reflects far more light (LRV 50 vs 12), opening up a space where Vintage Vogue encloses it.

Saybrook Sage
Thundercloud Gray
Saybrook Sage
Thundercloud Gray
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

Thundercloud Gray reads slightly lighter (LRV 50 vs 45), a gap that shows most in low-lit rooms.

Thundercloud Gray
Pale Green
Thundercloud Gray
Pale Green
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50
RAL ClassicClassic
Pale Green
LRV 31

At LRV 50 vs 31, Thundercloud Gray is decisively the brighter choice.

Thundercloud Gray
Pine Needle
Thundercloud Gray
Pine Needle
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

At LRV 50 vs 7, Thundercloud Gray is decisively the brighter choice.

Thundercloud Gray
Cement grey
Thundercloud Gray
Cement grey
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50
RAL ClassicClassic
Cement grey
LRV 24

At LRV 50 vs 24, Thundercloud Gray is decisively the brighter choice.

Guilford Green
Thundercloud Gray
Guilford Green
Thundercloud Gray
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

A 7-point LRV gap (57 vs 50) makes Guilford Green the marginally brighter of the two.

Thundercloud Gray
Just Walnut
Thundercloud Gray
Just Walnut
Benjamin Moore
Thundercloud Gray
2124-40 · LRV 50

At LRV 72 vs 50, Just Walnut is decisively the brighter choice.