BLUES

Nightshadow Blue

#555971

RGB 85, 89, 113 · HSL 231°, 14%, 39% · CMYK 25, 21, 0, 56

Nightshadow Blue is #555971 in HEX — rgb(85, 89, 113), hsl(231°, 14%, 39%), cmyk(25%, 21%, 0%, 56%).

Nightshadow Blue pulls into the rich end of the blues spectrum — HSL 231°, 14%, 39%. 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#555971

RGB85, 89, 113

HSL231°, 14%, 39%

HSV231°, 25%, 44%

CMYK25, 21, 0, 56

Decimal5593457

CSS RGBrgb(85, 89, 113)

CSS HSLhsl(231, 14%, 39%)

Paint Matches — this color across 16 brands

Kilz

Deep Velvet RB290-01

ΔE 2.2 · #4F5872

Dulux

Harbourmaster S41D7

ΔE 2.7 · #4D546B

Behr

Vintage Grape 670F-6

ΔE 3 · #595975

Dunn-Edwards

Intergalactic DE5916

ΔE 3.9 · #4D516C

Benjamin Moore

Kensington 840 · CC-780

ΔE 4.1 · #4C5B72

Valspar

Mystified 4011-8

ΔE 4.1 · #48536D

Vista Paint

Flirty Fran K-89

ΔE 4.3 · #5C6379

Sherwin-Williams

Purple Passage SW6551

ΔE 4.8 · #645E77

PPG

Magic Spell 1173-7

ΔE 4.9 · #544F66

Hallman-Lindsay

Grapes Of Wrath 1284

ΔE 5.4 · #65627D

Farrow & Ball

Stiffkey Blue 281

ΔE 7 · #4D5B6A

RAL

Pearl Black Berry 4012

ΔE 7.5 · #6C6881

IKEA

IKEA122 122

ΔE 8.6 · #3A5170

Colorhouse

Wool .06 Wool-06

ΔE 10.2 · #485761

Kobra

Blue 31

ΔE 11.8 · #334059

Dutch Boy

Ocean Blue D-6743

ΔE 14.2 · #4C6A74

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

#555971

#716D56

Analogous

#566871

#555971

#5F5671

Triadic

#555971

#71565A

#5A7156

Split-Complementary

#555971

#715F56

#687156

Tetradic

#555971

#715668

#716D56

#56715F

Monochromatic

#14151A

#353746

#555971

#797E9A

#A5A8BB

Rectangle

#555971

#6D5671

#716D56

#5A7156

Compound

#555971

#5F5671

#716D56

#687156

Variations

Lighter

#717694

#979AAD

#C3C5CE

Darker

#44475B

#2E313F

#1B1C25

Saturation

#5F6168

#565A71

#2B3C9C

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

6.88:1

vs Black

3.05:1

AA Large

Deuteranopia

#555971

#535A71

Original → Simulated

Protanopia

#555971

#58586E

Original → Simulated

Tritanopia

#555971

#535D5A

Original → Simulated

Color Psychology

Focused · Cooling

Nightshadow 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

#7F6F70

Warm Bulb 2700K

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

#555971

Daylight 5500K

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

#6C7494

Cool Bulb 6500K

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

Pairs With

#EAEAEB

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.

#6A633F

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: #555971;

CSS — background

background-color: #555971;

CSS Variable

--color-nightshadow-blue: #555971;

Tailwind v3 — config

colors: { 'nightshadow-blue': '#555971' }

Tailwind — arbitrary

bg-[#555971] text-[#555971]

SCSS

$nightshadow-blue: #555971;

Similar Colors

Kensington Blue

#4B5A71 · ΔE 4.1

Blue Gaspe

#5C6274 · ΔE 5.2

Indi Go-Go

#445772 · ΔE 5.7

Van Deusen Blue

#485B6E · ΔE 6.5

Darkest Grape

#5C5A7C · ΔE 6.7

Newburyport Blue

#465566 · ΔE 6.7

Jet Blue

#414A62 · ΔE 7.0

Approaching Storm

#4B4A5C · ΔE 7.2

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 #555971?

#555971 is Nightshadow Blue, a deep blue with a cool undertone.

Is #555971 warm or cool?

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

What rooms work best with Nightshadow Blue?

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

What colors pair well with Nightshadow Blue?

Nightshadow 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 Nightshadow Blue?

You can download Nightshadow 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 Nightshadow Blue?

The hex code is #555971. In RGB it's 85, 89, 113, and in HSL it's 231°, 14%, 39%.

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