GREYS

Thundercat

#8A99A3

RGB 138, 153, 163 · HSL 204°, 12%, 59% · CMYK 15, 6, 0, 36

Thundercat is #8A99A3 in HEX — rgb(138, 153, 163), hsl(204°, 12%, 59%), cmyk(15%, 6%, 0%, 36%).

Thundercat pulls into the mid-tone end of the greys spectrum — HSL 204°, 12%, 59%. 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#8A99A3

RGB138, 153, 163

HSL204°, 12%, 59%

HSV204°, 15%, 64%

CMYK15, 6, 0, 36

Decimal9083299

CSS RGBrgb(138, 153, 163)

CSS HSLhsl(204, 12%, 59%)

Paint Matches — this color across 16 brands

Dunn-Edwards

Hamilton Blue DE6333

ΔE 0.6 · #8A99A4

Hallman-Lindsay

In Good Taste 505

ΔE 0.6 · #8999A4

Vista Paint

In Good Taste C-504

ΔE 0.7 · #8998A3

Dulux

Roman Bath S37A3

ΔE 1.3 · #8C98A3

Valspar

Evening Eclipse 4007-3C

ΔE 1.3 · #8E9CA6

PPG

Lost At Sea 1040-5

ΔE 1.3 · #8D9CA7

Benjamin Moore

Amsterdam AF-550

ΔE 2.4 · #82959E

Behr

Rainy Season MQ5-27

ΔE 2.6 · #8399A2

Sherwin-Williams

Daphne SW9151

ΔE 2.7 · #899CAA

Colorhouse

Water .05 Water-05

ΔE 3.5 · #82979D

Kilz

Stray Gray RE120-01

ΔE 3.8 · #7D939C

Kobra

Grey 42

ΔE 3.9 · #889099

RAL

Silver Grey 7001

ΔE 4.9 · #8A9597

IKEA

IKEA158 158

ΔE 5.5 · #7C9195

Farrow & Ball

Stone Blue 86

ΔE 5.5 · #7997A1

Dutch Boy

Dusky Mood DCP-1318

ΔE 8.6 · #A6ACB8

Light Reflectance & Undertone

Light Reflectance Value (LRV)

31/100

Medium

0 · DarkLight · 100

Balanced reflectance — holds colour without washing out. Versatile for most rooms and the most forgiving range for true-to-chip results.

Undertone

TemperatureCool MasstoneBlue UndertoneViolet

Reads as a cool blue with a violet undertone showing through, especially in daylight. Pair trim and adjacent colours to either calm or amplify that undertone.

Color Theory

Complementary

#8A99A3

#A3948A

Analogous

#8AA3A0

#8A99A3

#8A8CA3

Triadic

#8A99A3

#A38A99

#99A38A

Split-Complementary

#8A99A3

#A38A8C

#A3A08A

Tetradic

#8A99A3

#A08AA3

#A3948A

#8CA38A

Monochromatic

#414C53

#63737E

#8A99A3

#B5BEC5

#E0E4E6

Rectangle

#8A99A3

#948AA3

#A3948A

#99A38A

Compound

#8A99A3

#8A8CA3

#A3948A

#A3A08A

Variations

Lighter

#A1ADB5

#BAC2C7

#D7DBDD

Darker

#697B88

#48555E

#2A3137

Saturation

#93979A

#8A99A3

#5CA2D1

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

2.93:1

Fail

vs Black

7.17:1

AAA

Deuteranopia

#8A99A3

#9195A4

Original → Simulated

Protanopia

#8A99A3

#9797A2

Original → Simulated

Tritanopia

#8A99A3

#8A9A99

Original → Simulated

Color Psychology

Quiet · Versatile

Thundercat 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

#A79F95

Warm Bulb 2700K

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

#8A99A3

Daylight 5500K

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

#94A4BA

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.

#A07A60

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: #8A99A3;

CSS — background

background-color: #8A99A3;

CSS Variable

--color-thundercat: #8A99A3;

Tailwind v3 — config

colors: { 'thundercat': '#8A99A3' }

Tailwind — arbitrary

bg-[#8A99A3] text-[#8A99A3]

SCSS

$thundercat: #8A99A3;

Similar Colors

Coastline

#919DA8 · ΔE 2.2

Van Courtland Blue

#86989E · ΔE 2.7

Amsterdam

#81949D · ΔE 2.7

Chiswell Blue

#81929B · ΔE 3.0

Mineral Alloy

#81909B · ΔE 3.5

Sweatshirt Gray

#92999E · ΔE 4.0

Polaris Blue

#7C939E · ΔE 4.0

Comet

#97A2AE · ΔE 4.2

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 #8A99A3?

#8A99A3 is Thundercat, a mid-tone grey with a cool undertone.

Is #8A99A3 warm or cool?

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

What rooms work best with Thundercat?

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

What colors pair well with Thundercat?

Thundercat 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 Thundercat?

You can download Thundercat 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 Thundercat?

The hex code is #8A99A3. In RGB it's 138, 153, 163, and in HSL it's 204°, 12%, 59%.

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