BLUES

Decoration Blue

#3F74A3

RGB 63, 116, 163 · HSL 208°, 44%, 44% · CMYK 61, 29, 0, 36

Decoration Blue is #3F74A3 in HEX — rgb(63, 116, 163), hsl(208°, 44%, 44%), cmyk(61%, 29%, 0%, 36%).

Decoration Blue pulls into the rich end of the blues spectrum — HSL 208°, 44%, 44%. 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#3F74A3

RGB63, 116, 163

HSL208°, 44%, 44%

HSV208°, 61%, 64%

CMYK61, 29, 0, 36

Decimal4158627

CSS RGBrgb(63, 116, 163)

CSS HSLhsl(208, 44%, 44%)

Paint Matches — this color across 16 brands

Kilz

Triumph Blue RC280-01

ΔE 1.2 · #3F73A0

Dulux

Great Serpent S39E6

ΔE 2.3 · #4A75A3

Benjamin Moore

Winter's CC-844

ΔE 3 · #41739D

Behr

Shipyard S500-6

ΔE 3.3 · #3B739D

Sherwin-Williams

Lupine SW6810

ΔE 3.8 · #4E739F

Valspar

Burbling Brook 4007-8C

ΔE 4.2 · #5175A1

Vista Paint

Wakeby Beach K-137

ΔE 5 · #3E7DA8

Dunn-Edwards

The Blues DE5859

ΔE 5.1 · #296A9D

Hallman-Lindsay

Caribbean Current 598

ΔE 5.5 · #5678A9

PPG

North Sea 1239-6

ΔE 5.9 · #1D78AB

RAL

Distant Blue 5023

ΔE 8.2 · #49678D

Kobra

Blue 29

ΔE 9.2 · #1882B4

IKEA

IKEA128 128

ΔE 10.3 · #4A72B0

Farrow & Ball

Pitch Blue 220

ΔE 13.1 · #636E8F

Dutch Boy

Blue Sea VS-9451

ΔE 20.4 · #2D61AD

Colorhouse

Wool .06 Wool-06

ΔE 25.4 · #485761

Light Reflectance & Undertone

Light Reflectance Value (LRV)

16/100

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

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

#3F74A3

#A26D3F

Analogous

#3FA29E

#3F74A3

#3F42A2

Triadic

#3F74A3

#A23F73

#73A23F

Split-Complementary

#3F74A3

#A23F42

#A29E3F

Tetradic

#3F74A3

#9E3FA2

#A26D3F

#42A23F

Monochromatic

#142533

#294C6A

#3F74A3

#689AC4

#A0BFDA

Rectangle

#3F74A3

#6D3FA2

#A26D3F

#73A23F

Compound

#3F74A3

#3F42A2

#A26D3F

#A29E3F

Variations

Lighter

#5A90BF

#89ABC9

#BECEDC

Darker

#305D83

#20405C

#122536

Saturation

#61717F

#3F73A2

#1F76C1

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

4.95:1

vs Black

4.24:1

AA Large

Deuteranopia

#3F74A3

#566CA4

Original → Simulated

Protanopia

#3F74A3

#6D6D9E

Original → Simulated

Tritanopia

#3F74A3

#377C75

Original → Simulated

Color Psychology

Focused · Cooling

Decoration 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

#6F8495

Warm Bulb 2700K

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

#3F74A3

Daylight 5500K

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

#5C89BA

Cool Bulb 6500K

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

Pairs With

#E9EBEC

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.

#835D3C

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: #3F74A3;

CSS — background

background-color: #3F74A3;

CSS Variable

--color-decoration-blue: #3F74A3;

Tailwind v3 — config

colors: { 'decoration-blue': '#3F74A3' }

Tailwind — arbitrary

bg-[#3F74A3] text-[#3F74A3]

SCSS

$decoration-blue: #3F74A3;

Similar Colors

Winter's Eve

#40729C · ΔE 3.0

Old Glory

#396998 · ΔE 4.4

Blue Macaw

#2474A3 · ΔE 4.7

Nile Blue

#4E719A · ΔE 5.0

Athens Blue

#3D74AC · ΔE 5.5

Finley Blue

#4580A8 · ΔE 6.8

Seaport Blue

#006EA1 · ΔE 6.8

Laguna Blue

#00719C · ΔE 8.3

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 #3F74A3?

#3F74A3 is Decoration Blue, a mid-tone blue with a cool undertone.

Is #3F74A3 warm or cool?

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

What rooms work best with Decoration Blue?

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

What colors pair well with Decoration Blue?

Decoration 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 Decoration Blue?

You can download Decoration 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 Decoration Blue?

The hex code is #3F74A3. In RGB it's 63, 116, 163, and in HSL it's 208°, 44%, 44%.

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