NEUTRALS

Castle Stone

#525746

RGB 82, 87, 70 · HSL 78°, 11%, 31% · CMYK 6, 0, 20, 66

Castle Stone is #525746 in HEX — rgb(82, 87, 70), hsl(78°, 11%, 31%), cmyk(6%, 0%, 20%, 66%).

Castle Stone pulls into the rich end of the neutrals spectrum — HSL 78°, 11%, 31%. 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#525746

RGB82, 87, 70

HSL78°, 11%, 31%

HSV78°, 20%, 34%

CMYK6, 0, 20, 66

Decimal5396294

CSS RGBrgb(82, 87, 70)

CSS HSLhsl(78, 11%, 31%)

Paint Matches — this color across 16 brands

PPG

Castle Stone 1128-7

Exact match

Vista Paint

Irish Moss K-880

ΔE 0.9 · #505646

Kobra

Green 37

ΔE 1 · #515545

RAL

Green Grey 7009

ΔE 1.9 · #4D5645

Sherwin-Williams

Rookwood Dark Green SW2816

ΔE 2.1 · #565C4A

Hallman-Lindsay

Baize historic-baize

ΔE 2.6 · #4B5445

Dulux

Algae SG5F8

ΔE 2.8 · #4F513F

Benjamin Moore

Chimichurri CSP-810

ΔE 3.1 · #495342

Behr

River Forest MQ6-54

ΔE 3.2 · #545C47

Kilz

American Pine TB-69

ΔE 4.1 · #495748

Dunn-Edwards

Olive Court DEA174

ΔE 5 · #5F5D48

Valspar

Amazon Silt 6010-4

ΔE 5.5 · #605B47

IKEA

IKEA148 148

ΔE 7.2 · #676450

Dutch Boy

Ashton Grey VS-9303

ΔE 7.8 · #66665A

Colorhouse

Metal .05 Metal-05

ΔE 9.3 · #535654

Farrow & Ball

Studio Green 93

ΔE 9.7 · #464C49

Light Reflectance & Undertone

Light Reflectance Value (LRV)

9/100

Very Dark

0 · DarkLight · 100

Absorbs almost all light — dramatic and cocooning. Needs strong artificial lighting and works best as an accent or in well-lit rooms.

Undertone

TemperatureNeutral MasstoneYellow-Green UndertoneYellow

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

Color Theory

Complementary

#525746

#4C4658

Analogous

#585446

#525746

#4A5846

Triadic

#525746

#465358

#584653

Split-Complementary

#525746

#464A58

#544658

Tetradic

#525746

#465854

#4C4658

#58464A

Monochromatic

#0D0E0B

#2B2D24

#525746

#7A8268

#A0A691

Rectangle

#525746

#46584C

#4C4658

#584653

Compound

#525746

#4A5846

#4C4658

#544658

Variations

Lighter

#777F66

#999F8C

#C3C6BD

Darker

#424738

#2E3126

#1B1C16

Saturation

#50524C

#535846

#617B23

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

7.47:1

AAA

vs Black

2.81:1

Fail

Deuteranopia

#525746

#575447

Original → Simulated

Protanopia

#525746

#565648

Original → Simulated

Tritanopia

#525746

#535456

Original → Simulated

Color Psychology

Quiet · Versatile

Castle Stone 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

#7D6E50

Warm Bulb 2700K

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

#525746

Daylight 5500K

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

#6A7374

Cool Bulb 6500K

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

Pairs With

#EBEBEA

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.

#3C3254

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: #525746;

CSS — background

background-color: #525746;

CSS Variable

--color-castle-stone: #525746;

Tailwind v3 — config

colors: { 'castle-stone': '#525746' }

Tailwind — arbitrary

bg-[#525746] text-[#525746]

SCSS

$castle-stone: #525746;

Similar Colors

Vintage Vogue

#565D4F · ΔE 3.2

Tuscany Green

#545447 · ΔE 3.4

Chimichurri

#485241 · ΔE 3.4

Artichoke

#535140 · ΔE 3.7

Cabbage Patch

#5C5A47 · ΔE 3.8

Dakota Woods Green

#565344 · ΔE 3.9

Boreal Forest

#535F4E · ΔE 4.1

Backwoods

#586251 · ΔE 4.7

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 #525746?

#525746 is Castle Stone, a deep neutral with a cool undertone.

Is #525746 warm or cool?

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

What rooms work best with Castle Stone?

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

What colors pair well with Castle Stone?

Castle Stone 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 Castle Stone?

You can download Castle Stone 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 Castle Stone?

The hex code is #525746. In RGB it's 82, 87, 70, and in HSL it's 78°, 11%, 31%.

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