BLUES

Hague Blue

#3D4E57

RGB 61, 78, 87 · HSL 201°, 18%, 29% · CMYK 30, 10, 0, 66

Hague Blue is #3D4E57 in HEX — rgb(61, 78, 87), hsl(201°, 18%, 29%), cmyk(30%, 10%, 0%, 66%).

Hague Blue pulls into the deep end of the blues spectrum — HSL 201°, 18%, 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#3D4E57

RGB61, 78, 87

HSL201°, 18%, 29%

HSV201°, 30%, 34%

CMYK30, 10, 0, 66

Decimal4017751

CSS RGBrgb(61, 78, 87)

CSS HSLhsl(201, 18%, 29%)

Paint Matches — this color across 16 brands

Farrow & Ball

Hague Blue 30

Exact match

Behr

Orion Gray N510-6

ΔE 1 · #3D4C55

Dulux

Presidential S36A7

ΔE 1.4 · #3E4E59

Valspar

Everglade Deck 5011-3

ΔE 1.5 · #3C5058

Benjamin Moore

Brush CW-675

ΔE 1.6 · #425058

Sherwin-Williams

Sea Serpent SW7615

ΔE 1.8 · #3E4B54

Dunn-Edwards

Slate Wall DE5797

ΔE 2.2 · #40535D

PPG

High Salute 1039-7

ΔE 2.8 · #445056

Kilz

Kettle Black RE120-02

ΔE 3.1 · #47535C

Vista Paint

Calm Interlude C-500

ΔE 3.3 · #3D4C50

Hallman-Lindsay

Calm Interlude 501

ΔE 3.3 · #3C4D51

Colorhouse

Wool .06 Wool-06

ΔE 4.1 · #485761

RAL

Slate Grey 7015

ΔE 5.4 · #434750

IKEA

IKEA152 152

ΔE 6.5 · #494F50

Dutch Boy

Seal of Grey VS-9301

ΔE 9.9 · #575757

Kobra

Blue 31

ΔE 12.2 · #334059

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

#3D4E57

#57463D

Analogous

#3D5753

#3D4E57

#3D4157

Triadic

#3D4E57

#573D4E

#4E573D

Split-Complementary

#3D4E57

#573D41

#57533D

Tetradic

#3D4E57

#533D57

#57463D

#41573D

Monochromatic

#0A0D0F

#1D262A

#3D4E57

#5C7684

#849CA9

Rectangle

#3D4E57

#463D57

#57463D

#4E573D

Compound

#3D4E57

#3D4157

#57463D

#57533D

Variations

Lighter

#5A7482

#8297A3

#B8C2C8

Darker

#303F46

#212B31

#13191D

Saturation

#464B4E

#3D4E57

#1E5776

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

8.66:1

AAA

vs Black

2.43:1

Fail

Deuteranopia

#3D4E57

#464A58

Original → Simulated

Protanopia

#3D4E57

#4B4B56

Original → Simulated

Tritanopia

#3D4E57

#3D4F4E

Original → Simulated

Color Psychology

Focused · Cooling

Hague 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

#6D675C

Warm Bulb 2700K

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

#3D4E57

Daylight 5500K

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

#5A6C81

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.

#4F3A2F

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: #3D4E57;

CSS — background

background-color: #3D4E57;

CSS Variable

--color-hague-blue: #3D4E57;

Tailwind v3 — config

colors: { 'hague-blue': '#3D4E57' }

Tailwind — arbitrary

bg-[#3D4E57] text-[#3D4E57]

SCSS

$hague-blue: #3D4E57;

Similar Colors

Brush Blue

#414F57 · ΔE 1.4

Blue Note

#404B54 · ΔE 2.4

Narragansett Green

#435155 · ΔE 3.6

Lead Gray

#434E52 · ΔE 3.7

Hale Navy

#434B56 · ΔE 3.8

Everard Blue

#3D5459 · ΔE 4.1

In the Midnight Hour

#415663 · ΔE 4.2

Mysterious

#454B54 · 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 #3D4E57?

#3D4E57 is Hague Blue, a deep blue with a cool undertone.

Is #3D4E57 warm or cool?

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

What rooms work best with Hague Blue?

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

What colors pair well with Hague Blue?

Hague 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 Hague Blue?

You can download Hague 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 Hague Blue?

The hex code is #3D4E57. In RGB it's 61, 78, 87, and in HSL it's 201°, 18%, 29%.

← All colors