BLUES

Mountain Blueberry

#3C4B6C

RGB 60, 75, 108 · HSL 221°, 29%, 33% · CMYK 44, 31, 0, 58

Mountain Blueberry is #3C4B6C in HEX — rgb(60, 75, 108), hsl(221°, 29%, 33%), cmyk(44%, 31%, 0%, 58%).

Mountain Blueberry pulls into the rich end of the blues spectrum — HSL 221°, 29%, 33%. 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#3C4B6C

RGB60, 75, 108

HSL221°, 29%, 33%

HSV221°, 44%, 42%

CMYK44, 31, 0, 58

Decimal3951468

CSS RGBrgb(60, 75, 108)

CSS HSLhsl(221, 29%, 33%)

Paint Matches — this color across 16 brands

Behr

Bon Nuit MQ5-14

ΔE 0.9 · #3B496A

Sherwin-Williams

Dignified SW6538

ΔE 2.2 · #3B496D

Kilz

Blue Uniform RC130-02

ΔE 2.3 · #3B4F6F

PPG

Egyptian Violet 1168-7

ΔE 2.4 · #3D496D

Dulux

Buster S40D8

ΔE 2.6 · #3E4C69

IKEA

IKEA122 122

ΔE 3.7 · #3A5170

Valspar

Enchanted Navy 4010-8

ΔE 3.9 · #485375

Vista Paint

Midnight Interlude K-1243

ΔE 4 · #30466B

Hallman-Lindsay

Quiet Peace 592

ΔE 4.6 · #3A4A64

Benjamin Moore

Wizard CC-966

ΔE 5.4 · #41476E

Dunn-Edwards

Intergalactic DE5916

ΔE 6 · #4D516C

Kobra

Blue 31

ΔE 6.8 · #334059

Dutch Boy

Royal Blue D-6740

ΔE 10 · #1D375C

RAL

Brillant Blue 5007

ΔE 10.3 · #3E5F8A

Farrow & Ball

Stiffkey Blue 281

ΔE 13.3 · #4D5B6A

Colorhouse

Wool .06 Wool-06

ΔE 15.5 · #485761

Light Reflectance & Undertone

Light Reflectance Value (LRV)

7/100

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

#3C4B6C

#6D5D3C

Analogous

#3C646D

#3C4B6C

#453C6D

Triadic

#3C4B6C

#6D3C4B

#4B6D3C

Split-Complementary

#3C4B6C

#6D453C

#646D3C

Tetradic

#3C4B6C

#6D3C64

#6D5D3C

#3C6D45

Monochromatic

#090B10

#21293B

#3C4B6C

#576D9E

#8597BC

Rectangle

#3C4B6C

#5D3C6D

#6D5D3C

#4B6D3C

Compound

#3C4B6C

#453C6D

#6D5D3C

#646D3C

Variations

Lighter

#546A99

#7F8FB2

#B7BFCF

Darker

#2F3C58

#20293D

#121824

Saturation

#4D515B

#3C4B6D

#1E408A

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

8.70:1

AAA

vs Black

2.42:1

Fail

Deuteranopia

#3C4B6C

#3E4A6C

Original → Simulated

Protanopia

#3C4B6C

#494968

Original → Simulated

Tritanopia

#3C4B6C

#38514D

Original → Simulated

Color Psychology

Focused · Cooling

Mountain Blueberry 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

#6C656C

Warm Bulb 2700K

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

#3C4B6C

Daylight 5500K

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

#5A6A90

Cool Bulb 6500K

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

Pairs With

#EAEAEC

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.

#594E36

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: #3C4B6C;

CSS — background

background-color: #3C4B6C;

CSS Variable

--color-mountain-blueberry: #3C4B6C;

Tailwind v3 — config

colors: { 'mountain-blueberry': '#3C4B6C' }

Tailwind — arbitrary

bg-[#3C4B6C] text-[#3C4B6C]

SCSS

$mountain-blueberry: #3C4B6C;

Similar Colors

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#40466D · ΔE 5.5

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Jet Blue

#414A62 · ΔE 5.8

New York State of Mind

#355473 · ΔE 6.0

Indi Go-Go

#445772 · ΔE 6.5

Champion Cobalt

#264864 · ΔE 7.2

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#48445E · ΔE 7.8

Dark Lilac

#544D6D · ΔE 8.1

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 #3C4B6C?

#3C4B6C is Mountain Blueberry, a deep blue with a cool undertone.

Is #3C4B6C warm or cool?

Mountain Blueberry reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Mountain Blueberry?

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

What colors pair well with Mountain Blueberry?

Mountain Blueberry 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 Mountain Blueberry?

You can download Mountain Blueberry 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 Mountain Blueberry?

The hex code is #3C4B6C. In RGB it's 60, 75, 108, and in HSL it's 221°, 29%, 33%.

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