BLUES

Stiffkey Blue

#4D5B6A

RGB 77, 91, 106 · HSL 211°, 16%, 36% · CMYK 27, 14, 0, 58

Stiffkey Blue is #4D5B6A in HEX — rgb(77, 91, 106), hsl(211°, 16%, 36%), cmyk(27%, 14%, 0%, 58%).

Stiffkey Blue pulls into the rich end of the blues spectrum — HSL 211°, 16%, 36%. The neutral saturation makes it near-neutral and forgiving, and the hue reads cool. In interior projects it shines on bedrooms, bathrooms, home offices — for calm, focused environments. Reads best alongside warm white trim, oak or walnut, brass or matte black hardware.

Color Codes

HEX#4D5B6A

RGB77, 91, 106

HSL211°, 16%, 36%

HSV211°, 27%, 42%

CMYK27, 14, 0, 58

Decimal5069674

CSS RGBrgb(77, 91, 106)

CSS HSLhsl(211, 16%, 36%)

Paint Matches — this color across 16 brands

Farrow & Ball

Stiffkey Blue 281

Exact match

Valspar

Hampton Surf 4010-5

ΔE 0.8 · #4D5C6A

Dulux

Rainmaker S37C7

ΔE 1.7 · #485868

Behr

Harbour (marquee) QE-55

ΔE 1.9 · #485869

Vista Paint

Seal Blue C-1377

ΔE 2.1 · #495764

Benjamin Moore

Evening 2128-30

ΔE 2.2 · #525B68

Hallman-Lindsay

Seal Blue historic-seal-blue

ΔE 2.6 · #475663

Dunn-Edwards

Outer Space DE5824

ΔE 3.4 · #53626E

PPG

Goblin 1040-7

ΔE 3.4 · #525E68

Sherwin-Williams

Mineral Gray SW2740

ΔE 3.5 · #515763

Colorhouse

Wool .06 Wool-06

ΔE 3.7 · #485761

Kilz

Kettle Black RE120-02

ΔE 5 · #47535C

Dutch Boy

Ocean Blue D-6743

ΔE 8.3 · #4C6A74

IKEA

IKEA156 156

ΔE 8.5 · #676973

RAL

Graphite Grey 7024

ΔE 9 · #474A51

Kobra

Blue 31

ΔE 13.2 · #334059

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

TemperatureCool MasstoneBlue UndertoneViolet

Reads as a cool blue with a violet undertone showing through, especially in daylight. Pair trim and adjacent colours to either calm or amplify that undertone.

Color Theory

Complementary

#4D5B6A

#6A5C4D

Analogous

#4D6A6A

#4D5B6A

#4E4D6A

Triadic

#4D5B6A

#6A4D5B

#5B6A4D

Split-Complementary

#4D5B6A

#6A4E4D

#6A6A4D

Tetradic

#4D5B6A

#6A4D6A

#6A5C4D

#4D6A4E

Monochromatic

#0D0F12

#2D353E

#4D5B6A

#6E8196

#9AA8B6

Rectangle

#4D5B6A

#5C4D6A

#6A5C4D

#5B6A4D

Compound

#4D5B6A

#4E4D6A

#6A5C4D

#6A6A4D

Variations

Lighter

#697C90

#909DAA

#BFC6CC

Darker

#3D4956

#2A323B

#181D23

Saturation

#575C60

#4D5B6A

#275A91

Interior Use

Best Rooms

bedrooms, bathrooms, home offices

Best Uses

main walls, ceilings, trim, cabinetry

Pairs With

warm white trim, oak or walnut, brass or matte black hardware

Accessibility (WCAG)

vs White

6.95:1

vs Black

3.02:1

AA Large

Deuteranopia

#4D5B6A

#53586B

Original → Simulated

Protanopia

#4D5B6A

#595968

Original → Simulated

Tritanopia

#4D5B6A

#4C5D5B

Original → Simulated

Color Psychology

Focused · Cooling

Stiffkey Blue lowers the temperature of a room — useful in south-facing rooms that overheat visually, and in home offices where you want a clear head. Pair with warm wood and brass to keep it from reading clinical.

SymbolismTrust, depth, stability

PersonalityClear-headed, dependable, contemplative

focustrustcalmofficebedroomdepth

How it looks under different light

#79716B

Warm Bulb 2700K

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

#4D5B6A

Daylight 5500K

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

#66768F

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.

#624F3B

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: #4D5B6A;

CSS — background

background-color: #4D5B6A;

CSS Variable

--color-stiffkey-blue: #4D5B6A;

Tailwind v3 — config

colors: { 'stiffkey-blue': '#4D5B6A' }

Tailwind — arbitrary

bg-[#4D5B6A] text-[#4D5B6A]

SCSS

$stiffkey-blue: #4D5B6A;

Similar Colors

Evening Dove

#515A67 · ΔE 2.1

Newburyport Blue

#465566 · ΔE 2.9

Van Deusen Blue

#485B6E · ΔE 2.9

In the Midnight Hour

#415663 · ΔE 3.9

Andes Summit

#586471 · ΔE 4.1

Kensington Blue

#4B5A71 · ΔE 5.0

Newburg Green

#445962 · ΔE 5.0

Vermont Slate

#4C636E · ΔE 5.0

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 #4D5B6A?

#4D5B6A is Stiffkey Blue, a deep blue with a cool undertone.

Is #4D5B6A warm or cool?

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

What rooms work best with Stiffkey Blue?

Stiffkey Blue works well in bedrooms, bathrooms, home offices. Designers typically use it for main walls, ceilings, trim, cabinetry.

What colors pair well with Stiffkey Blue?

Stiffkey Blue pairs naturally with warm white trim, oak or walnut, brass or matte black hardware. Its complementary color is also a strong contrast option for accents.

Where can I download Stiffkey Blue?

You can download Stiffkey Blue 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 Stiffkey Blue?

The hex code is #4D5B6A. In RGB it's 77, 91, 106, and in HSL it's 211°, 16%, 36%.

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