GREYS

Stone Age

#81878A

RGB 129, 135, 138 · HSL 200°, 4%, 52% · CMYK 7, 2, 0, 46

Stone Age is #81878A in HEX — rgb(129, 135, 138), hsl(200°, 4%, 52%), cmyk(7%, 2%, 0%, 46%).

Stone Age pulls into the mid-tone end of the greys spectrum — HSL 200°, 4%, 52%. The neutral saturation makes it near-neutral and forgiving, and the hue reads cool. In interior projects it shines on walls, soft furniture, hard surfaces — as the project's quiet backbone. Reads best alongside white trim, natural wood, brass, soft black accents.

Color Codes

HEX#81878A

RGB129, 135, 138

HSL200°, 4%, 52%

HSV200°, 7%, 54%

CMYK7, 2, 0, 46

Decimal8488842

CSS RGBrgb(129, 135, 138)

CSS HSLhsl(200, 4%, 52%)

Paint Matches — this color across 16 brands

Vista Paint

Stone Age K-811

Exact match

Hallman-Lindsay

London Road 527

ΔE 0.8 · #7F878A

Benjamin Moore

Englewood 1607

ΔE 0.8 · #808588

Valspar

Vessel Gray 4005-2A

ΔE 1.3 · #84878B

Sherwin-Williams

Software SW7074

ΔE 1.3 · #7F8486

RAL

Telegrey 2 7046

ΔE 1.9 · #82898F

PPG

Garrison Gray 1039-5

ΔE 1.9 · #7B8588

Dunn-Edwards

Storm Cloud DE6362

ΔE 2.5 · #808283

Dulux

Panda Pod SG6C7

ΔE 2.5 · #7F888F

Kilz

December Nights TB-36

ΔE 2.9 · #7C878E

Dutch Boy

Natural Gray VS-9332

ΔE 2.9 · #878787

IKEA

IKEA184 184

ΔE 3.1 · #788082

Colorhouse

Wool .04 Wool-04

ΔE 3.2 · #8B8A8C

Behr

Gotham Gray MQ5-29

ΔE 3.4 · #899093

Farrow & Ball

Plummett 272

ΔE 4.5 · #8D8D8B

Kobra

Grey 42

ΔE 4.9 · #889099

Light Reflectance & Undertone

Light Reflectance Value (LRV)

24/100

Dark

0 · DarkLight · 100

Soaks up light and feels moody and intimate. Great for studies, dining rooms and accent walls; pair with ample lighting.

Undertone

TemperatureNeutral MasstoneBlue UndertoneViolet

A near-neutral with a subtle neutral violet undertone — it will pick up colour from surrounding surfaces and shift noticeably under different light.

Color Theory

Complementary

#81878A

#898380

Analogous

#808988

#81878A

#808189

Triadic

#81878A

#898086

#868980

Split-Complementary

#81878A

#898081

#898880

Tetradic

#81878A

#888089

#898380

#818980

Monochromatic

#36393A

#5B6062

#81878A

#A7ACAE

#CFD2D3

Rectangle

#81878A

#838089

#898380

#868980

Compound

#81878A

#808189

#898380

#898880

Variations

Lighter

#999EA1

#B3B6B8

#D3D5D5

Darker

#666C6F

#464A4C

#282B2C

Saturation

#838586

#808689

#459AC4

Interior Use

Best Rooms

living rooms, bedrooms, bathrooms

Best Uses

walls, soft furniture, hard surfaces

Pairs With

white trim, natural wood, brass, soft black accents

Accessibility (WCAG)

vs White

3.64:1

AA Large

vs Black

5.77:1

Deuteranopia

#81878A

#84858B

Original → Simulated

Protanopia

#81878A

#86868A

Original → Simulated

Tritanopia

#81878A

#818787

Original → Simulated

Color Psychology

Quiet · Versatile

Stone Age gets out of the way so the architecture and the people in the room do the work. The right neutral is never a default — it reads warm or cool, dusty or sharp depending on its undertone, and that undertone is what makes or breaks the room.

SymbolismBalance, sophistication, calm

PersonalityAdaptable, considered, timeless

versatileneutraltimelessbackdroptrimwall

How it looks under different light

#A09283

Warm Bulb 2700K

Incandescent / soft white LED — pulls colour toward yellow/amber.

#81878A

Daylight 5500K

Midday natural light or daylight-spec LED — closest to the paint chip.

#8D97A7

Cool Bulb 6500K

Cool white LED / overcast daylight — pulls colour toward blue.

Pairs With

#EAEBEB

Trim

Matched off-white

Same hue at 92% lightness — trim reads coordinated, not stark.

#F7F7F7

Ceiling

Whisper tint

Near-white with a hint of the hero's undertone — ceiling feels intentional.

#8D6755

Accent

Complementary punch

Hue +180°, slightly muted for paint vs. screen — use on a door, frame, or single piece.

#574738

Floor

Walnut neutral

Warm mid-brown grounds the scheme regardless of hero hue.

Paint Info

Brand · Product Line

Benjamin Moore / Regal Select Interior

Recommended Finishes

Eggshell (walls) · Pearl (trim) · Matte (ceiling)

Eggshell hides imperfections on main walls while keeping the color rich; pearl on trim adds subtle sheen and easier cleaning; flat matte on ceilings prevents glare.

Best Surfaces

Primary walls · Cabinetry · Trim · Soft furniture

Coverage & Dry Time

Typical coverage 350-400 sq ft per gallon over a primed surface.

Touch-dry in ~1 hour. Recoat after 4 hours. Full cure 7-14 days.

Primer

Standard primer is adequate.

Application Tip

Use a 9" microfiber roller on walls and a 2.5" angled sash brush for trim cuts. Two coats minimum for even depth.

Paint Calculator

Wall area (m²)

Coats

Coverage (m² / L)

You'll need

4.0 litres

1.06 US gallons · room for one touch-up coat. Buy slightly more to ensure single-batch match.

Code Snippets

CSS — color

color: #81878A;

CSS — background

background-color: #81878A;

CSS Variable

--color-stone-age: #81878A;

Tailwind v3 — config

colors: { 'stone-age': '#81878A' }

Tailwind — arbitrary

bg-[#81878A] text-[#81878A]

SCSS

$stone-age: #81878A;

Similar Colors

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#7F8487 · ΔE 1.2

Shaker Gray

#83898A · ΔE 1.4

Rock Gray

#7F8386 · ΔE 1.6

Whale Gray

#7E8283 · ΔE 2.3

Georgetown Gray

#7F8786 · ΔE 2.5

Hearthstone

#888D8F · ΔE 2.5

Lampblack

#7E8181 · ΔE 3.0

Charcoal Linen

#7C7F84 · ΔE 3.3

Built by DSGN.HOUSE Updated 2026

Our color tools run on our own catalogue of 26,000+ real paint colors across 16 brands — Benjamin Moore, Sherwin-Williams, Behr, Dulux, RAL and more — with the color math (HSL and CIELAB matching) computed in-house, not scraped from summaries. Every color you pick maps to a real, buyable paint with its code, so what you see here you can actually take to the store. We review and update these tools and their data regularly.

Created by Denis Kataev, founder of DSGN.HOUSE — a software engineer and digital entrepreneur building professional color-design tools for everyone.

Frequently Asked Questions

What color is #81878A?

#81878A is Stone Age, a mid-tone grey with a cool undertone.

Is #81878A warm or cool?

Stone Age reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Stone Age?

Stone Age works well in living rooms, bedrooms, bathrooms. Designers typically use it for walls, soft furniture, hard surfaces.

What colors pair well with Stone Age?

Stone Age pairs naturally with white trim, natural wood, brass, soft black accents. Its complementary color is also a strong contrast option for accents.

Where can I download Stone Age?

You can download Stone Age on DSGN.HOUSE in 15 designer formats including CSS gradient, Figma, Procreate swatches, Tailwind config, Adobe ASE, SVG, and 4K wallpapers — all free.

What's the hex code for Stone Age?

The hex code is #81878A. In RGB it's 129, 135, 138, and in HSL it's 200°, 4%, 52%.

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