GREENS

Sea Urchin

#368083

RGB 54, 128, 131 · HSL 182°, 42%, 36% · CMYK 59, 2, 0, 49

Sea Urchin is #368083 in HEX — rgb(54, 128, 131), hsl(182°, 42%, 36%), cmyk(59%, 2%, 0%, 49%).

Sea Urchin pulls into the rich end of the greens spectrum — HSL 182°, 42%, 36%. The muted saturation makes it quiet but present, and the hue reads cool. In interior projects it shines on bedrooms, bathrooms, libraries — for grounding, restorative spaces. Reads best alongside soft white walls, oak floors, brass, warm clay accents.

Color Codes

HEX#368083

RGB54, 128, 131

HSL182°, 42%, 36%

HSV182°, 59%, 51%

CMYK59, 2, 0, 49

Decimal3571843

CSS RGBrgb(54, 128, 131)

CSS HSLhsl(182, 42%, 36%)

Paint Matches — this color across 16 brands

Dulux

Sea Urchin S31C5

Exact match

Valspar

Fish Story 5006-8C

ΔE 2.2 · #3F8488

Behr

Tornado Season S450-6

ΔE 2.4 · #3B7C7F

Hallman-Lindsay

Atmosphere 689

ΔE 2.8 · #3A8483

PPG

Jade Jewel 1147-6

ΔE 3 · #247E81

Vista Paint

Atmosphere C-688

ΔE 3.2 · #3C8381

Benjamin Moore

Teal 2049-30

ΔE 3.3 · #2A787C

Farrow & Ball

Vardo 288

ΔE 3.8 · #427E83

Sherwin-Williams

Grand Canal SW6488

ΔE 4 · #3C797D

RAL

Turquoise Blue 5018

ΔE 4.1 · #3F888F

Kilz

Scuba RF130-02

ΔE 4.4 · #22838B

Dunn-Edwards

Deep Lagoon DE5740

ΔE 4.5 · #2B888D

IKEA

IKEA118 118

ΔE 5.1 · #317983

Colorhouse

Dream .06 Dream-06

ΔE 8.1 · #0E707B

Dutch Boy

Ocean Blue D-6743

ΔE 15 · #4C6A74

Kobra

Green 41

ΔE 15.4 · #009185

Light Reflectance & Undertone

Light Reflectance Value (LRV)

18/100

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 MasstoneTeal UndertoneGreen

Reads as a cool teal with a green undertone showing through, especially in daylight. Pair trim and adjacent colours to either calm or amplify that undertone.

Color Theory

Complementary

#368083

#823835

Analogous

#35825E

#368083

#355982

Triadic

#368083

#823580

#808235

Split-Complementary

#368083

#823559

#825E35

Tetradic

#368083

#5E3582

#823835

#598235

Monochromatic

#091516

#1F4B4C

#368083

#4EB3B7

#84CACD

Rectangle

#368083

#383582

#823835

#808235

Compound

#368083

#355982

#823835

#825E35

Variations

Lighter

#48ADB1

#7ABEC0

#B5D6D7

Darker

#29686A

#1B484A

#0F2B2C

Saturation

#506767

#358082

#1B999D

Interior Use

Best Rooms

bedrooms, bathrooms, libraries

Best Uses

main walls, cabinetry, soft furniture

Pairs With

soft white walls, oak floors, brass, warm clay accents

Accessibility (WCAG)

vs White

4.59:1

vs Black

4.57:1

Deuteranopia

#368083

#686E85

Original → Simulated

Protanopia

#368083

#777783

Original → Simulated

Tritanopia

#368083

#39807D

Original → Simulated

Color Psychology

Calm · Restorative

Sea Urchin sits in the part of the spectrum the eye relaxes into. Designers reach for green when a room needs to feel like a refuge — bedrooms, libraries, bathrooms — because it lowers visual blood-pressure without flattening the space.

SymbolismGrowth, balance, nature

PersonalitySteady, grounded, thoughtful

calmnaturerestorativebalancebedroomlibrary

How it looks under different light

#688D7D

Warm Bulb 2700K

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

#368083

Daylight 5500K

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

#5592A2

Cool Bulb 6500K

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

Pairs With

#E9ECEC

Trim

Matched off-white

Same hue at 92% lightness — trim reads coordinated, not stark.

#F7F8F8

Ceiling

Whisper tint

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

#6A3432

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: #368083;

CSS — background

background-color: #368083;

CSS Variable

--color-sea-urchin: #368083;

Tailwind v3 — config

colors: { 'sea-urchin': '#368083' }

Tailwind — arbitrary

bg-[#368083] text-[#368083]

SCSS

$sea-urchin: #368083;

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#29777B · ΔE 3.6

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#23777B · ΔE 4.0

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#2E7572 · ΔE 5.7

Calypso Blue

#397A85 · ΔE 6.1

Surf Blue

#00808B · ΔE 6.8

Mayo Teal

#558787 · ΔE 7.0

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#3E7371 · ΔE 7.0

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#2C8392 · ΔE 7.3

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 #368083?

#368083 is Sea Urchin, a deep green with a cool undertone.

Is #368083 warm or cool?

Sea Urchin reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Sea Urchin?

Sea Urchin works well in bedrooms, bathrooms, libraries. Designers typically use it for main walls, cabinetry, soft furniture.

What colors pair well with Sea Urchin?

Sea Urchin pairs naturally with soft white walls, oak floors, brass, warm clay accents. Its complementary color is also a strong contrast option for accents.

Where can I download Sea Urchin?

You can download Sea Urchin 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 Sea Urchin?

The hex code is #368083. In RGB it's 54, 128, 131, and in HSL it's 182°, 42%, 36%.

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