NEUTRALS

Blue Fir

#51645F

RGB 81, 100, 95 · HSL 164°, 10%, 35% · CMYK 19, 0, 5, 61

Blue Fir is #51645F in HEX — rgb(81, 100, 95), hsl(164°, 10%, 35%), cmyk(19%, 0%, 5%, 61%).

Blue Fir pulls into the rich end of the neutrals spectrum — HSL 164°, 10%, 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#51645F

RGB81, 100, 95

HSL164°, 10%, 35%

HSV164°, 19%, 39%

CMYK19, 0, 5, 61

Decimal5334111

CSS RGBrgb(81, 100, 95)

CSS HSLhsl(164, 10%, 35%)

Paint Matches — this color across 16 brands

Dulux

Armada S26A7

ΔE 1.8 · #526760

Valspar

Thalo Night 5009-4

ΔE 2 · #51605B

PPG

Obligation 1135-7

ΔE 2.1 · #54645C

Behr

Charcoal BXC-41

ΔE 2.8 · #4C6261

Sherwin-Williams

Rookwood Sash Green SW2810

ΔE 3.4 · #506A67

Dunn-Edwards

Artistic Stone DE6307

ΔE 3.5 · #5C6B65

Hallman-Lindsay

Hazelwood historic-hazelwood

ΔE 4.2 · #5B695F

Benjamin Moore

Mediterranean 2123-10

ΔE 4.3 · #475A57

Vista Paint

Hazelwood C-1407

ΔE 4.3 · #5D6A61

Farrow & Ball

Inchyra Blue 289

ΔE 4.4 · #586768

Kilz

Charcoal RM150

ΔE 4.9 · #566466

RAL

Basalt Grey 7012

ΔE 6.2 · #4E5754

Colorhouse

Wool .05 Wool-05

ΔE 8 · #587675

IKEA

IKEA188 188

ΔE 8.1 · #646462

Kobra

Green 38

ΔE 8.3 · #415448

Dutch Boy

Ashton Grey VS-9303

ΔE 9 · #66665A

Light Reflectance & Undertone

Light Reflectance Value (LRV)

12/100

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

TemperatureCool MasstoneTeal UndertoneGreen

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

Color Theory

Complementary

#51645F

#625055

Analogous

#506254

#51645F

#505E62

Triadic

#51645F

#5D5062

#625D50

Split-Complementary

#51645F

#62505E

#625450

Tetradic

#51645F

#545062

#625055

#5E6250

Monochromatic

#0B0E0D

#2E3835

#51645F

#738C85

#9DAFAA

Rectangle

#51645F

#505562

#625055

#625D50

Compound

#51645F

#505E62

#625055

#625450

Variations

Lighter

#6E8780

#93A49F

#C1C9C7

Darker

#404F4B

#2C3634

#19201E

Saturation

#575C5A

#50625D

#288A70

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

6.29:1

vs Black

3.34:1

AA Large

Deuteranopia

#51645F

#5D5E60

Original → Simulated

Protanopia

#51645F

#616160

Original → Simulated

Tritanopia

#51645F

#526363

Original → Simulated

Color Psychology

Quiet · Versatile

Blue Fir 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

#7C7862

Warm Bulb 2700K

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

#51645F

Daylight 5500K

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

#697D87

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.

#5F3943

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: #51645F;

CSS — background

background-color: #51645F;

CSS Variable

--color-blue-fir: #51645F;

Tailwind v3 — config

colors: { 'blue-fir': '#51645F' }

Tailwind — arbitrary

bg-[#51645F] text-[#51645F]

SCSS

$blue-fir: #51645F;

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#465956 · ΔE 4.7

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#4A5950 · ΔE 5.2

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#616964 · ΔE 5.2

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#445851 · ΔE 5.3

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#5A7169 · ΔE 5.4

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 #51645F?

#51645F is Blue Fir, a deep neutral with a cool undertone.

Is #51645F warm or cool?

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

What rooms work best with Blue Fir?

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

What colors pair well with Blue Fir?

Blue Fir 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 Blue Fir?

You can download Blue Fir 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 Blue Fir?

The hex code is #51645F. In RGB it's 81, 100, 95, and in HSL it's 164°, 10%, 35%.

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