GREENS

Thermal Spring

#3B8C80

RGB 59, 140, 128 · HSL 171°, 41%, 39% · CMYK 58, 0, 9, 45

Thermal Spring is #3B8C80 in HEX — rgb(59, 140, 128), hsl(171°, 41%, 39%), cmyk(58%, 0%, 9%, 45%).

Thermal Spring pulls into the rich end of the greens spectrum — HSL 171°, 41%, 39%. 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#3B8C80

RGB59, 140, 128

HSL171°, 41%, 39%

HSV171°, 58%, 55%

CMYK58, 0, 9, 45

Decimal3902592

CSS RGBrgb(59, 140, 128)

CSS HSLhsl(171, 41%, 39%)

Paint Matches — this color across 16 brands

Sherwin-Williams

Thermal Spring SW6761

Exact match

Dulux

Copper Turquoise S28E7

ΔE 1.5 · #38887C

Dunn-Edwards

Royal Palm DE5726

ΔE 2.4 · #418D84

Benjamin Moore

Geddy CW-550

ΔE 2.6 · #2F8C7F

Vista Paint

Time to Grow K-249

ΔE 3.1 · #2D8E84

Valspar

Elegant Silk 5010-7

ΔE 3.5 · #378377

PPG

Carlisle 1141-6

ΔE 4.6 · #45867C

Behr

Mosaic Tile 520D-7

ΔE 5.3 · #1D8276

Colorhouse

Dream .05 Dream-05

ΔE 5.3 · #18887C

Hallman-Lindsay

Blue Winged Teal historic-blue-winged-teal

ΔE 7.1 · #00827C

Kilz

French Blue RF280-02

ΔE 7.1 · #4C928F

Kobra

Green 41

ΔE 7.9 · #009185

RAL

Mint Turquoise 6033

ΔE 9 · #497E76

Farrow & Ball

Vardo 288

ΔE 13 · #427E83

Dutch Boy

Grass Green D-6753

ΔE 15.1 · #317455

IKEA

IKEA118 118

ΔE 15.4 · #317983

Light Reflectance & Undertone

Light Reflectance Value (LRV)

21/100

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

#3B8C80

#8C3B47

Analogous

#3B8C57

#3B8C80

#3B708C

Triadic

#3B8C80

#803B8C

#8C803B

Split-Complementary

#3B8C80

#8C3B70

#8C573B

Tetradic

#3B8C80

#573B8C

#8C3B47

#708C3B

Monochromatic

#0E201E

#24564F

#3B8C80

#5ABAAB

#90D0C7

Rectangle

#3B8C80

#3B478C

#8C3B47

#8C803B

Compound

#3B8C80

#3B708C

#8C3B47

#8C573B

Variations

Lighter

#50B6A6

#81C2B8

#B9D8D3

Darker

#2D7268

#1E4F48

#112F2A

Saturation

#57706C

#3B8C80

#1DAA95

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

4.00:1

AA Large

vs Black

5.25:1

Deuteranopia

#3B8C80

#747782

Original → Simulated

Protanopia

#3B8C80

#838382

Original → Simulated

Tritanopia

#3B8C80

#428988

Original → Simulated

Color Psychology

Calm · Restorative

Thermal Spring 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

#6C967B

Warm Bulb 2700K

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

#3B8C80

Daylight 5500K

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

#599B9F

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.

#723740

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: #3B8C80;

CSS — background

background-color: #3B8C80;

CSS Variable

--color-thermal-spring: #3B8C80;

Tailwind v3 — config

colors: { 'thermal-spring': '#3B8C80' }

Tailwind — arbitrary

bg-[#3B8C80] text-[#3B8C80]

SCSS

$thermal-spring: #3B8C80;

Similar Colors

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#2E8B7E · ΔE 2.7

Green Gables

#34816F · ΔE 5.7

Highlands Green

#3B7E6F · ΔE 6.2

Juniper Green

#458A74 · ΔE 6.2

Soft Spruce

#3F9793 · ΔE 6.4

Aruba Blue

#008B84 · ΔE 6.8

Gulf Shores

#008C87 · ΔE 7.2

Lucky Shamrock

#2A806C · ΔE 7.2

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 #3B8C80?

#3B8C80 is Thermal Spring, a deep green with a cool undertone.

Is #3B8C80 warm or cool?

Thermal Spring reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Thermal Spring?

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

What colors pair well with Thermal Spring?

Thermal Spring 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 Thermal Spring?

You can download Thermal Spring 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 Thermal Spring?

The hex code is #3B8C80. In RGB it's 59, 140, 128, and in HSL it's 171°, 41%, 39%.

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