BLUES

Slate Wall

#40535D

RGB 64, 83, 93 · HSL 201°, 18%, 31% · CMYK 31, 11, 0, 64

Slate Wall is #40535D in HEX — rgb(64, 83, 93), hsl(201°, 18%, 31%), cmyk(31%, 11%, 0%, 64%).

Slate Wall pulls into the rich end of the blues spectrum — HSL 201°, 18%, 31%. 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#40535D

RGB64, 83, 93

HSL201°, 18%, 31%

HSV201°, 31%, 36%

CMYK31, 11, 0, 64

Decimal4215645

CSS RGBrgb(64, 83, 93)

CSS HSLhsl(201, 18%, 31%)

Paint Matches — this color across 16 brands

Dunn-Edwards

Slate Wall DE5797

Exact match

Valspar

Everglade Deck 5011-3

ΔE 2 · #3C5058

Dulux

Sea Blithe S33A7

ΔE 2.1 · #41555C

Farrow & Ball

Hague Blue 30

ΔE 2.2 · #3D4E57

Benjamin Moore

Brush CW-675

ΔE 2.3 · #425058

Colorhouse

Wool .06 Wool-06

ΔE 2.5 · #485761

Vista Paint

Asher Benjamin C-1380

ΔE 2.5 · #45575E

Hallman-Lindsay

Asher Benjamin historic-asher-benjamin

ΔE 2.5 · #45575E

Kilz

Kettle Black RE120-02

ΔE 2.6 · #47535C

PPG

Soothing Sapphire 10-09

ΔE 2.7 · #48545D

Behr

Restless Sea PPU13-20

ΔE 3.1 · #37515E

Sherwin-Williams

Sea Serpent SW7615

ΔE 3.7 · #3E4B54

RAL

Graphite Grey 7024

ΔE 6.8 · #474A51

IKEA

IKEA152 152

ΔE 7.3 · #494F50

Dutch Boy

Ocean Blue D-6743

ΔE 9.5 · #4C6A74

Kobra

Blue 31

ΔE 12.9 · #334059

Light Reflectance & Undertone

Light Reflectance Value (LRV)

8/100

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

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

#40535D

#5D4B41

Analogous

#415D59

#40535D

#41455D

Triadic

#40535D

#5D4153

#535D41

Split-Complementary

#40535D

#5D4145

#5D5941

Tetradic

#40535D

#59415D

#5D4B41

#455D41

Monochromatic

#0A0D0F

#212B30

#40535D

#607C8A

#8AA1AD

Rectangle

#40535D

#4B415D

#5D4B41

#535D41

Compound

#40535D

#41455D

#5D4B41

#5D5941

Variations

Lighter

#5E7887

#859AA6

#BAC4C9

Darker

#33434B

#232E34

#141B1F

Saturation

#4B5053

#41535D

#205D7E

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

8.04:1

AAA

vs Black

2.61:1

Fail

Deuteranopia

#40535D

#4A4E5E

Original → Simulated

Protanopia

#40535D

#50505C

Original → Simulated

Tritanopia

#40535D

#405453

Original → Simulated

Color Psychology

Focused · Cooling

Slate Wall 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

#6F6B61

Warm Bulb 2700K

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

#40535D

Daylight 5500K

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

#5D7085

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.

#543E32

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: #40535D;

CSS — background

background-color: #40535D;

CSS Variable

--color-slate-wall: #40535D;

Tailwind v3 — config

colors: { 'slate-wall': '#40535D' }

Tailwind — arbitrary

bg-[#40535D] text-[#40535D]

SCSS

$slate-wall: #40535D;

Similar Colors

In the Midnight Hour

#415663 · ΔE 2.3

Brush Blue

#414F57 · ΔE 2.5

Newburg Green

#445962 · ΔE 2.6

Everard Blue

#3D5459 · ΔE 3.7

Blue Note

#404B54 · ΔE 4.1

Narragansett Green

#435155 · ΔE 4.1

Amazon Green

#415457 · ΔE 4.5

Lead Gray

#434E52 · ΔE 4.9

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 #40535D?

#40535D is Slate Wall, a deep blue with a cool undertone.

Is #40535D warm or cool?

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

What rooms work best with Slate Wall?

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

What colors pair well with Slate Wall?

Slate Wall 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 Slate Wall?

You can download Slate Wall 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 Slate Wall?

The hex code is #40535D. In RGB it's 64, 83, 93, and in HSL it's 201°, 18%, 31%.

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