BLUES

Jewel Cave

#3C4173

RGB 60, 65, 115 · HSL 235°, 31%, 34% · CMYK 48, 43, 0, 55

Jewel Cave is #3C4173 in HEX — rgb(60, 65, 115), hsl(235°, 31%, 34%), cmyk(48%, 43%, 0%, 55%).

Jewel Cave pulls into the rich end of the blues spectrum — HSL 235°, 31%, 34%. 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#3C4173

RGB60, 65, 115

HSL235°, 31%, 34%

HSV235°, 48%, 45%

CMYK48, 43, 0, 55

Decimal3948915

CSS RGBrgb(60, 65, 115)

CSS HSLhsl(235, 31%, 34%)

Paint Matches — this color across 16 brands

Behr

Violet Eclipse 650F-7

ΔE 1.1 · #3B3F72

Dulux

Iris Flower S43G8

ΔE 1.4 · #3B4374

Dunn-Edwards

Cobalt DEA140

ΔE 2 · #3C4378

Sherwin-Williams

Valiant Violet SW6818

ΔE 2.8 · #3E4371

Benjamin Moore

Grape 2068-20

ΔE 3.1 · #423E6E

Hallman-Lindsay

Hot Sauna 1271

ΔE 3.2 · #3F3F75

Vista Paint

Sailor's Eyes K-1241

ΔE 3.6 · #394778

Valspar

Jazzy Blue 4010-9

ΔE 5.5 · #4C4D7F

Kilz

Renaissance Tapestry RH240

ΔE 6 · #48436D

PPG

Daring Indigo 1166-7 · 13-25

ΔE 6.3 · #374874

RAL

Traffic Blue 5017

ΔE 10 · #063971

Dutch Boy

Royal Blue D-6740

ΔE 12 · #1D375C

Kobra

Blue 30

ΔE 15 · #195584

Colorhouse

Petal .05 Petal-05

ΔE 15.2 · #1F4992

IKEA

IKEA122 122

ΔE 15.7 · #3A5170

Farrow & Ball

Pitch Blue 220

ΔE 21.8 · #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

#3C4173

#726D3C

Analogous

#3C5B72

#3C4173

#523C72

Triadic

#3C4173

#723C40

#40723C

Split-Complementary

#3C4173

#72523C

#5B723C

Tetradic

#3C4173

#723C5B

#726D3C

#3C7252

Monochromatic

#090911

#21243F

#3C4173

#565DA4

#878BC0

Rectangle

#3C4173

#6D3C72

#726D3C

#40723C

Compound

#3C4173

#523C72

#726D3C

#5B723C

Variations

Lighter

#53599E

#7F84B5

#B7B9D1

Darker

#2F335C

#1F2240

#121426

Saturation

#4F505F

#3C4072

#1E278F

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

9.56:1

AAA

vs Black

2.20:1

Fail

Deuteranopia

#3C4173

#324673

Original → Simulated

Protanopia

#3C4173

#40406E

Original → Simulated

Tritanopia

#3C4173

#354C45

Original → Simulated

Color Psychology

Focused · Cooling

Jewel Cave 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

#6C5D71

Warm Bulb 2700K

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

#3C4173

Daylight 5500K

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

#5A6296

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.

#5D5A36

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: #3C4173;

CSS — background

background-color: #3C4173;

CSS Variable

--color-jewel-cave: #3C4173;

Tailwind v3 — config

colors: { 'jewel-cave': '#3C4173' }

Tailwind — arbitrary

bg-[#3C4173] text-[#3C4173]

SCSS

$jewel-cave: #3C4173;

Similar Colors

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#413D6D · ΔE 3.2

Starry Night Blue

#334076 · ΔE 3.3

Basic Blue

#3F457D · ΔE 4.0

Blue Grotto

#353963 · ΔE 5.9

Admiral Blue

#2B3762 · ΔE 6.8

Wizard

#40466D · ΔE 7.5

Blue

#233872 · ΔE 7.9

Southern Belle

#41548C · ΔE 8.8

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 #3C4173?

#3C4173 is Jewel Cave, a deep blue with a cool undertone.

Is #3C4173 warm or cool?

Jewel Cave reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Jewel Cave?

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

What colors pair well with Jewel Cave?

Jewel Cave 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 Jewel Cave?

You can download Jewel Cave 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 Jewel Cave?

The hex code is #3C4173. In RGB it's 60, 65, 115, and in HSL it's 235°, 31%, 34%.

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