BLUES

Aeronautic

#2B3548

RGB 43, 53, 72 · HSL 219°, 25%, 23% · CMYK 40, 26, 0, 72

Aeronautic is #2B3548 in HEX — rgb(43, 53, 72), hsl(219°, 25%, 23%), cmyk(40%, 26%, 0%, 72%).

Aeronautic pulls into the deep end of the blues spectrum — HSL 219°, 25%, 23%. 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#2B3548

RGB43, 53, 72

HSL219°, 25%, 23%

HSV219°, 40%, 28%

CMYK40, 26, 0, 72

Decimal2831688

CSS RGBrgb(43, 53, 72)

CSS HSLhsl(219, 25%, 23%)

Paint Matches — this color across 16 brands

Dulux

Aeronautic S41C9

Exact match

Benjamin Moore

Old 2063-10

ΔE 1.5 · #2F364A

Behr

Sorcerer 760F-7

ΔE 2.8 · #2B3645

Sherwin-Williams

In the Navy SW9178

ΔE 2.9 · #283849

Dunn-Edwards

Old Mill DEA185

ΔE 3.1 · #343B4E

RAL

Ocean Blue 5020

ΔE 4.6 · #1D334A

Vista Paint

Blazer Blue K-152

ΔE 4.9 · #243A52

Kilz

Ruling Royalty TB-50

ΔE 5.9 · #313048

Kobra

Blue 31

ΔE 6.1 · #334059

Hallman-Lindsay

Star-studded 620

ΔE 6.5 · #32425A

PPG

Victory Blue 1165-7

ΔE 7.2 · #3A405A

Valspar

Twilight Purple 4010-2

ΔE 8.1 · #3E3B46

IKEA

IKEA163 163

ΔE 9.5 · #423A45

Dutch Boy

Royal Blue D-6740

ΔE 12.2 · #1D375C

Colorhouse

Nourish .06 Nourish-06

ΔE 12.2 · #313536

Farrow & Ball

Hague Blue 30

ΔE 12.8 · #3D4E57

Light Reflectance & Undertone

Light Reflectance Value (LRV)

4/100

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

#2B3548

#493F2C

Analogous

#2C4549

#2B3548

#302C49

Triadic

#2B3548

#492C36

#36492C

Split-Complementary

#2B3548

#49302C

#45492C

Tetradic

#2B3548

#492C45

#493F2C

#2C4930

Monochromatic

#0A0C10

#0F131A

#2B3548

#495A79

#697EA5

Rectangle

#2B3548

#3F2C49

#493F2C

#36492C

Compound

#2B3548

#302C49

#493F2C

#45492C

Variations

Lighter

#495B7A

#7082A2

#AEB7C6

Darker

#232B3B

#171E29

#0D1118

Saturation

#36393F

#2C3649

#16305F

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

12.31:1

AAA

vs Black

1.71:1

Fail

Deuteranopia

#2B3548

#2D3448

Original → Simulated

Protanopia

#2B3548

#333346

Original → Simulated

Tritanopia

#2B3548

#293836

Original → Simulated

Color Psychology

Focused · Cooling

Aeronautic 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

#605451

Warm Bulb 2700K

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

#2B3548

Daylight 5500K

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

#4D5975

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.

#3E3625

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 / Aura Interior (for richer color depth in deep tones)

Recommended Finishes

Matte (walls) · Pearl (trim) · Satin (doors)

Deep colors look best in matte — gloss exaggerates surface flaws. Reserve subtle sheen for trim, doors, and high-touch areas.

Best Surfaces

Accent walls · Doors · Cabinetry · Built-ins

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

Tinted primer in a similar value is highly recommended — saves a coat and prevents the wall colour from washing the surface.

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: #2B3548;

CSS — background

background-color: #2B3548;

CSS Variable

--color-aeronautic: #2B3548;

Tailwind v3 — config

colors: { 'aeronautic': '#2B3548' }

Tailwind — arbitrary

bg-[#2B3548] text-[#2B3548]

SCSS

$aeronautic: #2B3548;

Similar Colors

Old Navy

#2E3549 · ΔE 1.4

Deep Royal

#2F394B · ΔE 1.9

North Sea

#2B3B4C · ΔE 3.6

Deep Mulberry

#3C3845 · ΔE 7.1

Polo Blue

#323A43 · ΔE 7.1

Blackberry Punch

#3F4150 · ΔE 7.1

Marine Blue

#1D3E59 · ΔE 8.3

Washington Blue

#304656 · ΔE 8.4

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 #2B3548?

#2B3548 is Aeronautic, a deep blue with a cool undertone.

Is #2B3548 warm or cool?

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

What rooms work best with Aeronautic?

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

What colors pair well with Aeronautic?

Aeronautic 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 Aeronautic?

You can download Aeronautic 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 Aeronautic?

The hex code is #2B3548. In RGB it's 43, 53, 72, and in HSL it's 219°, 25%, 23%.

← All colors