BLUES

Blue Sou’wester

#404956

RGB 64, 73, 86 · HSL 215°, 15%, 29% · CMYK 26, 15, 0, 66

Blue Sou’wester is #404956 in HEX — rgb(64, 73, 86), hsl(215°, 15%, 29%), cmyk(26%, 15%, 0%, 66%).

Blue Sou’wester pulls into the deep end of the blues spectrum — HSL 215°, 15%, 29%. 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#404956

RGB64, 73, 86

HSL215°, 15%, 29%

HSV215°, 26%, 34%

CMYK26, 15, 0, 66

Decimal4213078

CSS RGBrgb(64, 73, 86)

CSS HSLhsl(215, 15%, 29%)

Paint Matches — this color across 16 brands

Dunn-Edwards

Parisian Night DEA184

ΔE 0.4 · #3F4855

Behr

Starless Night PPU14-20

ΔE 0.6 · #3E4855

Dulux

Pit Stop S38C8

ΔE 0.8 · #414A58

Valspar

Royal Navy 4011-4

ΔE 1.4 · #414A55

Kilz

Prussian Blue RD100-02

ΔE 1.7 · #444D5A

Benjamin Moore

Hale HC-154

ΔE 1.9 · #444C57

PPG

Cavalry 1041-7

ΔE 1.9 · #3F4C5A

Sherwin-Williams

Charcoal Blue SW2739

ΔE 2.2 · #3D4450

RAL

Slate Grey 7015

ΔE 3.2 · #434750

Farrow & Ball

Hague Blue 30

ΔE 4.4 · #3D4E57

Vista Paint

Pantry Plum K-88

ΔE 4.7 · #3D3F4C

Hallman-Lindsay

China Aster historic-china-aster

ΔE 4.8 · #444C60

Colorhouse

Wool .06 Wool-06

ΔE 6.3 · #485761

IKEA

IKEA152 152

ΔE 8.1 · #494F50

Kobra

Blue 31

ΔE 8.9 · #334059

Dutch Boy

Seal of Grey VS-9301

ΔE 10.9 · #575757

Light Reflectance & Undertone

Light Reflectance Value (LRV)

7/100

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

#404956

#554C3F

Analogous

#3F5355

#404956

#413F55

Triadic

#404956

#553F48

#48553F

Split-Complementary

#404956

#55413F

#53553F

Tetradic

#404956

#553F53

#554C3F

#3F5541

Monochromatic

#0B0C0F

#1E2329

#404956

#5F6D81

#8794A6

Rectangle

#404956

#4C3F55

#554C3F

#48553F

Compound

#404956

#413F55

#554C3F

#53553F

Variations

Lighter

#5E6B7F

#8590A0

#B9BFC6

Darker

#323A44

#22282F

#14171C

Saturation

#47494D

#3F4855

#1F4374

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

9.11:1

AAA

vs Black

2.31:1

Fail

Deuteranopia

#404956

#434756

Original → Simulated

Protanopia

#404956

#484854

Original → Simulated

Tritanopia

#404956

#3F4B49

Original → Simulated

Color Psychology

Focused · Cooling

Blue Sou’wester 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

#6F635C

Warm Bulb 2700K

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

#404956

Daylight 5500K

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

#5D6880

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.

#4F412F

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: #404956;

CSS — background

background-color: #404956;

CSS Variable

--color-blue-sou’wester: #404956;

Tailwind v3 — config

colors: { 'blue-sou’wester': '#404956' }

Tailwind — arbitrary

bg-[#404956] text-[#404956]

SCSS

$blue-sou’wester: #404956;

Similar Colors

Hale Navy

#434B56 · ΔE 1.6

Evening Sky

#464956 · ΔE 2.4

Blue Note

#404B54 · ΔE 2.8

Mysterious

#454B54 · ΔE 2.9

Blackberry Punch

#3F4150 · ΔE 4.3

Ebony Slate

#4A4A53 · ΔE 4.4

Brush Blue

#414F57 · ΔE 4.4

Gravel Gray

#444A50 · ΔE 4.6

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 #404956?

#404956 is Blue Sou’wester, a deep blue with a cool undertone.

Is #404956 warm or cool?

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

What rooms work best with Blue Sou’wester?

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

What colors pair well with Blue Sou’wester?

Blue Sou’wester 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 Blue Sou’wester?

You can download Blue Sou’wester 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 Blue Sou’wester?

The hex code is #404956. In RGB it's 64, 73, 86, and in HSL it's 215°, 15%, 29%.

← All colors