BLUES

Hauraki Gulf

#3D505E

RGB 61, 80, 94 · HSL 205°, 21%, 30% · CMYK 35, 15, 0, 63

Hauraki Gulf is #3D505E in HEX — rgb(61, 80, 94), hsl(205°, 21%, 30%), cmyk(35%, 15%, 0%, 63%).

Hauraki Gulf pulls into the rich end of the blues spectrum — HSL 205°, 21%, 30%. The muted saturation makes it quiet but present, 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#3D505E

RGB61, 80, 94

HSL205°, 21%, 30%

HSV205°, 35%, 37%

CMYK35, 15, 0, 63

Decimal4018270

CSS RGBrgb(61, 80, 94)

CSS HSLhsl(205, 21%, 30%)

Paint Matches — this color across 16 brands

Dulux

Hauraki Gulf NZ10A7

Exact match

Dunn-Edwards

Midnight Haze DE5818

ΔE 0.8 · #3E505F

Vista Paint

Day Spa C-633

ΔE 1 · #3E5261

Hallman-Lindsay

Day Spa 634

ΔE 2 · #3D5463

Valspar

Fly-by-Night Blue 4009-4

ΔE 2.1 · #414F5B

Behr

Restless Sea PPU13-20

ΔE 2.5 · #37515E

PPG

Cavalry 1041-7

ΔE 2.5 · #3F4C5A

Benjamin Moore

In 1666

ΔE 3 · #425764

Farrow & Ball

Hague Blue 30

ΔE 3.3 · #3D4E57

Sherwin-Williams

Indigo Batik SW7602

ΔE 3.3 · #3E5063

Kilz

Prussian Blue RD100-02

ΔE 3.7 · #444D5A

Colorhouse

Wool .06 Wool-06

ΔE 4.2 · #485761

RAL

Slate Grey 7015

ΔE 6.8 · #434750

IKEA

IKEA152 152

ΔE 9.2 · #494F50

Kobra

Blue 31

ΔE 10.2 · #334059

Dutch Boy

Ocean Blue D-6743

ΔE 11.1 · #4C6A74

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

#3D505E

#5D4A3C

Analogous

#3C5D5A

#3D505E

#3C3F5D

Triadic

#3D505E

#5D3C4F

#4F5D3C

Split-Complementary

#3D505E

#5D3C3F

#5D5A3C

Tetradic

#3D505E

#5A3C5D

#5D4A3C

#3F5D3C

Monochromatic

#0A0D0F

#1E282E

#3D505E

#5B778B

#849DAE

Rectangle

#3D505E

#4A3C5D

#5D4A3C

#4F5D3C

Compound

#3D505E

#3C3F5D

#5D4A3C

#5D5A3C

Variations

Lighter

#597488

#8197A7

#B7C2CA

Darker

#303F4B

#202C34

#13191E

Saturation

#484D51

#3C4F5D

#1E547B

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

8.37:1

AAA

vs Black

2.51:1

Fail

Deuteranopia

#3D505E

#464C5F

Original → Simulated

Protanopia

#3D505E

#4D4D5C

Original → Simulated

Tritanopia

#3D505E

#3C5250

Original → Simulated

Color Psychology

Focused · Cooling

Hauraki Gulf 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

#6D6962

Warm Bulb 2700K

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

#3D505E

Daylight 5500K

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

#5A6E86

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.

#F7F7F8

Ceiling

Whisper tint

Near-white with a hint of the hero's undertone — ceiling feels intentional.

#513E31

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: #3D505E;

CSS — background

background-color: #3D505E;

CSS Variable

--color-hauraki-gulf: #3D505E;

Tailwind v3 — config

colors: { 'hauraki-gulf': '#3D505E' }

Tailwind — arbitrary

bg-[#3D505E] text-[#3D505E]

SCSS

$hauraki-gulf: #3D505E;

Similar Colors

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#415663 · ΔE 2.6

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#465566 · ΔE 3.5

Hudson Bay

#3F5266 · ΔE 3.9

Brush Blue

#414F57 · ΔE 4.0

Blue Note

#404B54 · ΔE 4.4

Hale Navy

#434B56 · ΔE 4.5

Washington Blue

#304656 · ΔE 4.7

Newburg Green

#445962 · 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 #3D505E?

#3D505E is Hauraki Gulf, a deep blue with a cool undertone.

Is #3D505E warm or cool?

Hauraki Gulf reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Hauraki Gulf?

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

What colors pair well with Hauraki Gulf?

Hauraki Gulf 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 Hauraki Gulf?

You can download Hauraki Gulf 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 Hauraki Gulf?

The hex code is #3D505E. In RGB it's 61, 80, 94, and in HSL it's 205°, 21%, 30%.

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