BLUES

Hot Sauna

#3F3F75

RGB 63, 63, 117 · HSL 240°, 30%, 35% · CMYK 46, 46, 0, 54

Hot Sauna is #3F3F75 in HEX — rgb(63, 63, 117), hsl(240°, 30%, 35%), cmyk(46%, 46%, 0%, 54%).

Hot Sauna pulls into the rich end of the blues spectrum — HSL 240°, 30%, 35%. 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#3F3F75

RGB63, 63, 117

HSL240°, 30%, 35%

HSV240°, 46%, 46%

CMYK46, 46, 0, 54

Decimal4145013

CSS RGBrgb(63, 63, 117)

CSS HSLhsl(240, 30%, 35%)

Paint Matches — this color across 16 brands

Hallman-Lindsay

Hot Sauna 1271

Exact match

Behr

Violet Eclipse 650F-7

ΔE 2.4 · #3B3F72

Dunn-Edwards

Cobalt DEA140

ΔE 2.7 · #3C4378

Benjamin Moore

Basic CC-968

ΔE 3.3 · #40467E

Vista Paint

Georgian Court K-72

ΔE 3.6 · #3E3A74

Dulux

Iris Flower S43G8

ΔE 4.6 · #3B4374

Sherwin-Williams

Valiant Violet SW6818

ΔE 5.8 · #3E4371

Valspar

Homecoming Blue 4009-9

ΔE 6.5 · #484E83

Kilz

Renaissance Tapestry RH240

ΔE 8 · #48436D

PPG

Imperial Purple 1175-7

ΔE 8.4 · #534A77

RAL

Traffic Blue 5017

ΔE 10.5 · #063971

Colorhouse

Petal .05 Petal-05

ΔE 13.9 · #1F4992

Dutch Boy

Delft Blue 7447

ΔE 14.7 · #003B67

Kobra

Blue 30

ΔE 17.6 · #195584

IKEA

IKEA122 122

ΔE 18.8 · #3A5170

Farrow & Ball

Pitch Blue 220

ΔE 24 · #636E8F

Light Reflectance & Undertone

Light Reflectance Value (LRV)

6/100

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

#3F3F75

#74743E

Analogous

#3E5974

#3F3F75

#593E74

Triadic

#3F3F75

#743E3E

#3E743E

Split-Complementary

#3F3F75

#74593E

#59743E

Tetradic

#3F3F75

#743E59

#74743E

#3E7459

Monochromatic

#090911

#242442

#3F3F75

#5959A6

#8B8BC1

Rectangle

#3F3F75

#743E74

#74743E

#3E743E

Compound

#3F3F75

#593E74

#74743E

#59743E

Variations

Lighter

#56569F

#8282B5

#B9B9D1

Darker

#31315E

#212141

#131326

Saturation

#515161

#3E3E74

#1F1F93

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

9.64:1

AAA

vs Black

2.18:1

Fail

Deuteranopia

#3F3F75

#314675

Original → Simulated

Protanopia

#3F3F75

#3F3F70

Original → Simulated

Tritanopia

#3F3F75

#384B44

Original → Simulated

Color Psychology

Focused · Cooling

Hot Sauna 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

#6F5C73

Warm Bulb 2700K

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

#3F3F75

Daylight 5500K

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

#5C6197

Cool Bulb 6500K

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

Pairs With

#E9E9EC

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.

#5F5F39

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: #3F3F75;

CSS — background

background-color: #3F3F75;

CSS Variable

--color-hot-sauna: #3F3F75;

Tailwind v3 — config

colors: { 'hot-sauna': '#3F3F75' }

Tailwind — arbitrary

bg-[#3F3F75] text-[#3F3F75]

SCSS

$hot-sauna: #3F3F75;

Similar Colors

Basic Blue

#3F457D · ΔE 3.0

Starry Night Blue

#334076 · ΔE 3.8

Grape Gum

#413D6D · ΔE 3.9

Blue

#233872 · ΔE 7.0

Scandinavian Blue

#4E4E8C · ΔE 7.8

Blue Grotto

#353963 · ΔE 8.2

Delphinium

#304C89 · ΔE 9.0

Admiral Blue

#2B3762 · ΔE 9.1

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 #3F3F75?

#3F3F75 is Hot Sauna, a deep blue with a cool undertone.

Is #3F3F75 warm or cool?

Hot Sauna reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Hot Sauna?

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

What colors pair well with Hot Sauna?

Hot Sauna 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 Hot Sauna?

You can download Hot Sauna 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 Hot Sauna?

The hex code is #3F3F75. In RGB it's 63, 63, 117, and in HSL it's 240°, 30%, 35%.

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