NEUTRALS

Crucible

#555B59

RGB 85, 91, 89 · HSL 160°, 3%, 35% · CMYK 7, 0, 2, 64

Crucible is #555B59 in HEX — rgb(85, 91, 89), hsl(160°, 3%, 35%), cmyk(7%, 0%, 2%, 64%).

Crucible pulls into the rich end of the neutrals spectrum — HSL 160°, 3%, 35%. The neutral saturation makes it near-neutral and forgiving, and the hue reads cool. In interior projects it shines on main walls, trims, ceilings — versatile across nearly any style. Reads best alongside soft whites, natural wood, matte black trim, linen.

Color Codes

HEX#555B59

RGB85, 91, 89

HSL160°, 3%, 35%

HSV160°, 7%, 36%

CMYK7, 0, 2, 64

Decimal5593945

CSS RGBrgb(85, 91, 89)

CSS HSLhsl(160, 3%, 35%)

Paint Matches — this color across 16 brands

Dulux

Juvenile SG5E7

ΔE 1.2 · #535856

Valspar

Sable Calm 5002-2C

ΔE 1.3 · #565B57

Vista Paint

Zen Retreat C-534

ΔE 2 · #5B5D5B

Hallman-Lindsay

Zen Retreat 535

ΔE 2.2 · #5B5D5C

Colorhouse

Metal .05 Metal-05

ΔE 2.2 · #535654

PPG

Mostly Metal 1036-7

ΔE 2.3 · #575E5F

RAL

Basalt Grey 7012

ΔE 2.4 · #4E5754

Dunn-Edwards

Soot DE6321

ΔE 2.4 · #555E5F

Benjamin Moore

Ambler CW-685

ΔE 2.5 · #585A5B

Sherwin-Williams

Peppercorn SW7674

ΔE 2.9 · #585858

Dutch Boy

Seal of Grey VS-9301

ΔE 3 · #575757

Behr

Maximum Gray QE-62

ΔE 3.2 · #555657

Kilz

Motor Gray TB-38

ΔE 3.4 · #545658

Farrow & Ball

Down Pipe 26

ΔE 4.8 · #626664

IKEA

IKEA188 188

ΔE 4.9 · #646462

Kobra

Green 37

ΔE 9.1 · #515545

Light Reflectance & Undertone

Light Reflectance Value (LRV)

10/100

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 MasstoneTeal UndertoneGreen

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

Color Theory

Complementary

#555B59

#5C5758

Analogous

#575C57

#555B59

#575B5C

Triadic

#555B59

#5A575C

#5C5A57

Split-Complementary

#555B59

#5C575B

#5C5757

Tetradic

#555B59

#57575C

#5C5758

#5B5C57

Monochromatic

#0C0D0D

#313534

#555B59

#7C8381

#A3A8A7

Rectangle

#555B59

#57585C

#5C5758

#5C5A57

Compound

#555B59

#575B5C

#5C5758

#5C5757

Variations

Lighter

#777E7C

#999E9C

#C4C6C5

Darker

#454A48

#2F3332

#1C1E1D

Saturation

#585A5A

#575C5A

#2B8769

Interior Use

Best Rooms

living rooms, bedrooms, kitchens

Best Uses

main walls, trim, accents

Pairs With

soft whites, natural wood, brass, matte black trim

Accessibility (WCAG)

vs White

6.94:1

vs Black

3.03:1

AA Large

Deuteranopia

#555B59

#59595A

Original → Simulated

Protanopia

#555B59

#5A5A59

Original → Simulated

Tritanopia

#555B59

#555B5B

Original → Simulated

Color Psychology

Quiet · Versatile

Crucible 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

#7F715E

Warm Bulb 2700K

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

#555B59

Daylight 5500K

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

#6C7682

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.

#5F3946

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 · Doors · Mouldings

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: #555B59;

CSS — background

background-color: #555B59;

CSS Variable

--color-crucible: #555B59;

Tailwind v3 — config

colors: { 'crucible': '#555B59' }

Tailwind — arbitrary

bg-[#555B59] text-[#555B59]

SCSS

$crucible: #555B59;

Similar Colors

Flint

#565C5E · ΔE 2.5

Ambler Slate

#57595A · ΔE 2.6

Gray

#585858 · ΔE 2.9

Dark Pewter

#4B5756 · ΔE 3.3

Ashwood Moss

#565851 · ΔE 3.6

Bracken Slate

#5E6363 · ΔE 3.7

Iron Mountain

#575553 · ΔE 3.8

Temptation

#54585C · ΔE 3.9

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 #555B59?

#555B59 is Crucible, a deep neutral with a cool undertone.

Is #555B59 warm or cool?

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

What rooms work best with Crucible?

Crucible works well in living rooms, bedrooms, kitchens. Designers typically use it for main walls, trim, accents.

What colors pair well with Crucible?

Crucible pairs naturally with soft whites, natural wood, brass, matte black trim. Its complementary color is also a strong contrast option for accents.

Where can I download Crucible?

You can download Crucible 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 Crucible?

The hex code is #555B59. In RGB it's 85, 91, 89, and in HSL it's 160°, 3%, 35%.

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