NEUTRALS

Night Gull Grey

#615D5C

RGB 97, 93, 92 · HSL 12°, 3%, 37% · CMYK 0, 4, 5, 62

Night Gull Grey is #615D5C in HEX — rgb(97, 93, 92), hsl(12°, 3%, 37%), cmyk(0%, 4%, 5%, 62%).

Night Gull Grey pulls into the rich end of the neutrals spectrum — HSL 12°, 3%, 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#615D5C

RGB97, 93, 92

HSL12°, 3%, 37%

HSV12°, 5%, 38%

CMYK0, 4, 5, 62

Decimal6380892

CSS RGBrgb(97, 93, 92)

CSS HSLhsl(12, 3%, 37%)

Paint Matches — this color across 16 brands

Behr

Intellectual PPU18-19

ΔE 0.8 · #605C5A

Valspar

Semi-Sweet 4003-2C

ΔE 1 · #625F5D

Dulux

Waza Bear S12A7

ΔE 1.2 · #5E5A59

Kilz

Space RM200

ΔE 1.3 · #625D5E

Dunn-Edwards

Iron Fixture DE6384

ΔE 1.4 · #5D5B5B

Vista Paint

Dark Shadows K-817

ΔE 1.5 · #5F5D5A

PPG

Phantom Hue 1004-6

ΔE 1.8 · #645D5E

Hallman-Lindsay

Gropius Gray historic-gropius-gray

ΔE 2.4 · #63615D

Benjamin Moore

Gray 2121-10

ΔE 3 · #585858

Sherwin-Williams

Peppercorn SW7674

ΔE 3 · #585858

IKEA

IKEA188 188

ΔE 3.1 · #646462

Dutch Boy

Seal of Grey VS-9301

ΔE 3.4 · #575757

Farrow & Ball

Down Pipe 26

ΔE 4.5 · #626664

Colorhouse

Metal .05 Metal-05

ΔE 4.7 · #535654

RAL

Traffic Grey B 7043

ΔE 6.4 · #4E5452

Kobra

Green 37

ΔE 10.9 · #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 MasstoneRed UndertonePink

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

Color Theory

Complementary

#615D5C

#5C6061

Analogous

#615C5D

#615D5C

#615F5C

Triadic

#615D5C

#5C615D

#5D5C61

Split-Complementary

#615D5C

#5C615F

#5C5D61

Tetradic

#615D5C

#5D615C

#5C6061

#5F5C61

Monochromatic

#121211

#3A3736

#615D5C

#888281

#ADA9A8

Rectangle

#615D5C

#60615C

#5C6061

#5D5C61

Compound

#615D5C

#615F5C

#5C6061

#5C5D61

Variations

Lighter

#827C7B

#A19D9C

#C8C6C6

Darker

#4E4A49

#363332

#1F1E1D

Saturation

#5F5E5E

#615D5C

#8F412E

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

6.50:1

vs Black

3.23:1

AA Large

Deuteranopia

#615D5C

#5F5E5C

Original → Simulated

Protanopia

#615D5C

#5E5E5C

Original → Simulated

Tritanopia

#615D5C

#615D5D

Original → Simulated

Color Psychology

Quiet · Versatile

Night Gull Grey 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

#887260

Warm Bulb 2700K

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

#615D5C

Daylight 5500K

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

#757784

Cool Bulb 6500K

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

Pairs With

#EBEBEA

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.

#3C5C64

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: #615D5C;

CSS — background

background-color: #615D5C;

CSS Variable

--color-night-gull-grey: #615D5C;

Tailwind v3 — config

colors: { 'night-gull-grey': '#615D5C' }

Tailwind — arbitrary

bg-[#615D5C] text-[#615D5C]

SCSS

$night-gull-grey: #615D5C;

Similar Colors

Gray

#585858 · ΔE 3.0

City Shadow

#626463 · ΔE 3.5

Ambler Slate

#57595A · ΔE 3.5

Iron Mountain

#575553 · ΔE 3.7

Mountain Ridge

#675C5F · ΔE 3.8

Kendall Charcoal

#676662 · ΔE 4.0

Bracken Slate

#5E6363 · ΔE 4.2

Coachman's Cape®

#6A635D · ΔE 4.2

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 #615D5C?

#615D5C is Night Gull Grey, a deep neutral with a cool undertone.

Is #615D5C warm or cool?

Night Gull Grey reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Night Gull Grey?

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

What colors pair well with Night Gull Grey?

Night Gull Grey 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 Night Gull Grey?

You can download Night Gull Grey 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 Night Gull Grey?

The hex code is #615D5C. In RGB it's 97, 93, 92, and in HSL it's 12°, 3%, 37%.

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