NEUTRALS

Blackbird

#3F444C

RGB 63, 68, 76 · HSL 217°, 9%, 27% · CMYK 17, 11, 0, 70

Blackbird is #3F444C in HEX — rgb(63, 68, 76), hsl(217°, 9%, 27%), cmyk(17%, 11%, 0%, 70%).

Blackbird pulls into the deep end of the neutrals spectrum — HSL 217°, 9%, 27%. 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#3F444C

RGB63, 68, 76

HSL217°, 9%, 27%

HSV217°, 17%, 30%

CMYK17, 11, 0, 70

Decimal4146252

CSS RGBrgb(63, 68, 76)

CSS HSLhsl(217, 9%, 27%)

Paint Matches — this color across 16 brands

Benjamin Moore

Abyss 2128-20

ΔE 1.5 · #43454C

RAL

Slate Grey 7015

ΔE 1.6 · #434750

PPG

Napoleon 1013-7

ΔE 1.9 · #404149

Dulux

Deep Storm S40A8

ΔE 2.2 · #3F4651

Kilz

Night Magic RM230

ΔE 2.3 · #3C4348

Valspar

Very Black 5011-2

ΔE 2.3 · #424449

Dunn-Edwards

Stargazing DE6336

ΔE 2.6 · #414549

Sherwin-Williams

Cyberspace SW7076

ΔE 2.6 · #44484D

Behr

Winter Coat HDC-WR14-4

ΔE 3.3 · #44494D

Farrow & Ball

Railings 31

ΔE 3.8 · #45484B

Hallman-Lindsay

Midnight Magic 508

ΔE 3.9 · #46474A

Vista Paint

Midnight Magic C-507

ΔE 3.9 · #46474A

Colorhouse

Metal .06 Metal-06

ΔE 4.7 · #3F4647

IKEA

IKEA152 152

ΔE 6.4 · #494F50

Kobra

Black 44

ΔE 7.9 · #383737

Dutch Boy

Seal of Grey VS-9301

ΔE 10 · #575757

Light Reflectance & Undertone

Light Reflectance Value (LRV)

6/100

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

TemperatureCool MasstoneBlue UndertoneViolet

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

Color Theory

Complementary

#3F444C

#4B463F

Analogous

#3F4A4B

#3F444C

#403F4B

Triadic

#3F444C

#4B3F43

#434B3F

Split-Complementary

#3F444C

#4B403F

#4A4B3F

Tetradic

#3F444C

#4B3F4A

#4B463F

#3F4B40

Monochromatic

#0C0C0E

#1C1E21

#3F444C

#616975

#878F9B

Rectangle

#3F444C

#463F4B

#4B463F

#434B3F

Compound

#3F444C

#403F4B

#4B463F

#4A4B3F

Variations

Lighter

#616874

#878D98

#BABDC2

Darker

#32363C

#22252A

#141518

Saturation

#434447

#3F434B

#1F3C6A

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

9.80:1

AAA

vs Black

2.14:1

Fail

Deuteranopia

#3F444C

#41434C

Original → Simulated

Protanopia

#3F444C

#43434B

Original → Simulated

Tritanopia

#3F444C

#3E4544

Original → Simulated

Color Psychology

Quiet · Versatile

Blackbird 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

#6F6054

Warm Bulb 2700K

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

#3F444C

Daylight 5500K

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

#5C6578

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.

#493E2C

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: #3F444C;

CSS — background

background-color: #3F444C;

CSS Variable

--color-blackbird: #3F444C;

Tailwind v3 — config

colors: { 'blackbird': '#3F444C' }

Tailwind — arbitrary

bg-[#3F444C] text-[#3F444C]

SCSS

$blackbird: #3F444C;

Similar Colors

Abyss

#42444B · ΔE 1.4

Black Horizon

#44484D · ΔE 2.6

Witching Hour

#46494F · ΔE 2.8

Gravel Gray

#444A50 · ΔE 2.8

Baby Seal Black

#464A50 · ΔE 3.0

Mysterious

#454B54 · ΔE 3.1

Blue Note

#404B54 · ΔE 3.5

Hale Navy

#434B56 · ΔE 3.6

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 #3F444C?

#3F444C is Blackbird, a deep neutral with a cool undertone.

Is #3F444C warm or cool?

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

What rooms work best with Blackbird?

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

What colors pair well with Blackbird?

Blackbird 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 Blackbird?

You can download Blackbird 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 Blackbird?

The hex code is #3F444C. In RGB it's 63, 68, 76, and in HSL it's 217°, 9%, 27%.

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