BLUES

Lambent Lagoon

#3B5B92

RGB 59, 91, 146 · HSL 218°, 42%, 40% · CMYK 60, 38, 0, 43

Lambent Lagoon is #3B5B92 in HEX — rgb(59, 91, 146), hsl(218°, 42%, 40%), cmyk(60%, 38%, 0%, 43%).

Lambent Lagoon pulls into the rich end of the blues spectrum — HSL 218°, 42%, 40%. 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#3B5B92

RGB59, 91, 146

HSL218°, 42%, 40%

HSV218°, 60%, 57%

CMYK60, 38, 0, 43

Decimal3890066

CSS RGBrgb(59, 91, 146)

CSS HSLhsl(218, 42%, 40%)

Paint Matches — this color across 16 brands

Behr

Extreme S530-6

ΔE 2.5 · #3B5A8D

Dulux

Raftsman S40G7

ΔE 3.1 · #3C629B

Valspar

Deep Space 4008-8C

ΔE 3.2 · #38619B

Benjamin Moore

Southern 819

ΔE 4.1 · #42558D

Kilz

Navy Dress RH210

ΔE 4.3 · #285489

Sherwin-Williams

Frank Blue SW6967

ΔE 5.1 · #225288

Hallman-Lindsay

Fresh Take 1278

ΔE 5.8 · #505B93

PPG

Brilliant Blue 1161-7

ΔE 6 · #234E86

Dunn-Edwards

Lapis DE5846

ΔE 6.5 · #165D95

Vista Paint

Fresh Take C-1277

ΔE 6.9 · #515992

RAL

Brillant Blue 5007

ΔE 7.9 · #3E5F8A

Kobra

Blue 30

ΔE 8.5 · #195584

IKEA

IKEA128 128

ΔE 9.7 · #4A72B0

Dutch Boy

Blue Sea VS-9451

ΔE 12.6 · #2D61AD

Colorhouse

Petal .05 Petal-05

ΔE 14.4 · #1F4992

Farrow & Ball

Pitch Blue 220

ΔE 16.6 · #636E8F

Light Reflectance & Undertone

Light Reflectance Value (LRV)

10/100

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

#3B5B92

#91713B

Analogous

#3B8591

#3B5B92

#473B91

Triadic

#3B5B92

#913B5B

#5B913B

Split-Complementary

#3B5B92

#91473B

#85913B

Tetradic

#3B5B92

#913B85

#91713B

#3B9147

Monochromatic

#0F1724

#25395B

#3B5B92

#5C7FBC

#92AAD3

Rectangle

#3B5B92

#713B91

#91713B

#5B913B

Compound

#3B5B92

#473B91

#91713B

#85913B

Variations

Lighter

#5177B8

#829AC4

#BAC5D9

Darker

#2E4876

#1E3152

#111C30

Saturation

#596373

#3B5B91

#1E53AE

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

6.78:1

vs Black

3.10:1

AA Large

Deuteranopia

#3B5B92

#405993

Original → Simulated

Protanopia

#3B5B92

#57578C

Original → Simulated

Tritanopia

#3B5B92

#31665E

Original → Simulated

Color Psychology

Focused · Cooling

Lambent Lagoon 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

#6C7189

Warm Bulb 2700K

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

#3B5B92

Daylight 5500K

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

#5976AD

Cool Bulb 6500K

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

Pairs With

#E9EAEC

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.

#765F38

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: #3B5B92;

CSS — background

background-color: #3B5B92;

CSS Variable

--color-lambent-lagoon: #3B5B92;

Tailwind v3 — config

colors: { 'lambent-lagoon': '#3B5B92' }

Tailwind — arbitrary

bg-[#3B5B92] text-[#3B5B92]

SCSS

$lambent-lagoon: #3B5B92;

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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 #3B5B92?

#3B5B92 is Lambent Lagoon, a mid-tone blue with a cool undertone.

Is #3B5B92 warm or cool?

Lambent Lagoon reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Lambent Lagoon?

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

What colors pair well with Lambent Lagoon?

Lambent Lagoon 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 Lambent Lagoon?

You can download Lambent Lagoon 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 Lambent Lagoon?

The hex code is #3B5B92. In RGB it's 59, 91, 146, and in HSL it's 218°, 42%, 40%.

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