NEUTRALS

Rhine Castle

#5F5E5F

RGB 95, 94, 95 · HSL 300°, 1%, 37% · CMYK 0, 1, 0, 63

Rhine Castle is #5F5E5F in HEX — rgb(95, 94, 95), hsl(300°, 1%, 37%), cmyk(0%, 1%, 0%, 63%).

Rhine Castle pulls into the rich end of the neutrals spectrum — HSL 300°, 1%, 37%. 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#5F5E5F

RGB95, 94, 95

HSL300°, 1%, 37%

HSV300°, 1%, 37%

CMYK0, 1, 0, 63

Decimal6250079

CSS RGBrgb(95, 94, 95)

CSS HSLhsl(300, 1%, 37%)

Paint Matches — this color across 16 brands

Dulux

Grey Eagle SN4E8

ΔE 0.8 · #616061

PPG

Knight's Armor 1001-6

ΔE 1.2 · #5C5D5D

Dunn-Edwards

Iron Fixture DE6384

ΔE 1.4 · #5D5B5B

Kilz

Space RM200

ΔE 1.7 · #625D5E

Hallman-Lindsay

Zen Retreat 535

ΔE 1.9 · #5B5D5C

Vista Paint

Great Graphite K-825

ΔE 2 · #5E5F5D

Valspar

Semi-Sweet 4003-2C

ΔE 2.1 · #625F5D

Benjamin Moore

Ambler CW-685

ΔE 2.3 · #585A5B

Behr

Intellectual PPU18-19

ΔE 2.3 · #605C5A

Sherwin-Williams

Cloak Gray SW6278

ΔE 2.5 · #605E63

IKEA

IKEA188 188

ΔE 3 · #646462

Dutch Boy

Seal of Grey VS-9301

ΔE 3.1 · #575757

Farrow & Ball

Down Pipe 26

ΔE 3.9 · #626664

Colorhouse

Metal .05 Metal-05

ΔE 4.5 · #535654

RAL

Traffic Grey B 7043

ΔE 6 · #4E5452

Kobra

Green 37

ΔE 11.7 · #515545

Light Reflectance & Undertone

Light Reflectance Value (LRV)

11/100

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 MasstonePink UndertoneRed

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

Color Theory

Complementary

#5F5E5F

#5D5F5D

Analogous

#5E5D5F

#5F5E5F

#5F5D5E

Triadic

#5F5E5F

#5F5F5D

#5D5F5F

Split-Complementary

#5F5E5F

#5E5F5D

#5D5F5E

Tetradic

#5F5E5F

#5F5E5D

#5D5F5D

#5D5E5F

Monochromatic

#121212

#393839

#5F5E5F

#868386

#ACAAAC

Rectangle

#5F5E5F

#5F5D5D

#5D5F5D

#5D5F5F

Compound

#5F5E5F

#5F5D5E

#5D5F5D

#5D5F5E

Variations

Lighter

#807D80

#9F9E9F

#C7C6C7

Darker

#4C4B4C

#343334

#1F1E1F

Saturation

#5F5E5F

#5F5D5F

#8E2F8E

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

6.46:1

vs Black

3.25:1

AA Large

Deuteranopia

#5F5E5F

#5E5E5F

Original → Simulated

Protanopia

#5F5E5F

#5E5E5F

Original → Simulated

Tritanopia

#5F5E5F

#5F5E5E

Original → Simulated

Color Psychology

Quiet · Versatile

Rhine Castle 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

#877362

Warm Bulb 2700K

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

#5F5E5F

Daylight 5500K

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

#747887

Cool Bulb 6500K

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

Pairs With

#EBEBEB

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.

#3C643C

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: #5F5E5F;

CSS — background

background-color: #5F5E5F;

CSS Variable

--color-rhine-castle: #5F5E5F;

Tailwind v3 — config

colors: { 'rhine-castle': '#5F5E5F' }

Tailwind — arbitrary

bg-[#5F5E5F] text-[#5F5E5F]

SCSS

$rhine-castle: #5F5E5F;

Similar Colors

Ambler Slate

#57595A · ΔE 2.7

Gray

#585858 · ΔE 2.7

City Shadow

#626463 · ΔE 2.8

Bracken Slate

#5E6363 · ΔE 3.0

Flint

#565C5E · ΔE 3.3

Stormy Sky

#626568 · ΔE 3.3

Charcoal Slate

#646769 · ΔE 3.8

Anchor Gray

#5C6167 · 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 #5F5E5F?

#5F5E5F is Rhine Castle, a deep neutral with a cool undertone.

Is #5F5E5F warm or cool?

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

What rooms work best with Rhine Castle?

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

What colors pair well with Rhine Castle?

Rhine Castle 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 Rhine Castle?

You can download Rhine Castle 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 Rhine Castle?

The hex code is #5F5E5F. In RGB it's 95, 94, 95, and in HSL it's 300°, 1%, 37%.

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