BLUES

Deep Blue

#040273

RGB 4, 2, 115 · HSL 241°, 97%, 23% · CMYK 97, 98, 0, 55

Deep Blue is #040273 in HEX — rgb(4, 2, 115), hsl(241°, 97%, 23%), cmyk(97%, 98%, 0%, 55%).

Deep Blue pulls into the deep end of the blues spectrum — HSL 241°, 97%, 23%. The saturated saturation makes it bold and immediate, 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#040273

RGB4, 2, 115

HSL241°, 97%, 23%

HSV241°, 98%, 45%

CMYK97, 98, 0, 55

Decimal262771

CSS RGBrgb(4, 2, 115)

CSS HSLhsl(241, 97%, 23%)

Paint Matches — this color across 16 brands

Behr

Navy Blue S-H-580

ΔE 17.9 · #0B2F97

Dutch Boy

Blue Royale VS-9550

ΔE 31.6 · #243F90

RAL

Signal Blue 5005

ΔE 33.3 · #1E2D6E

Vista Paint

Evening Magic K-96

ΔE 39.2 · #343C79

Colorhouse

Petal .05 Petal-05

ΔE 39.4 · #1F4992

Benjamin Moore

Blue 2066-10

ΔE 40.9 · #243973

Hallman-Lindsay

Blue Highlight 613

ΔE 42.3 · #324A8B

Dulux

Brilliant Purple SB8G8

ΔE 42.8 · #4D4985

PPG

Crushed Velvet 1245-7

ΔE 43.2 · #445397

Dunn-Edwards

Beaded Blue DE5909

ΔE 43.4 · #494D8B

Kilz

Superstition RH250

ΔE 47.7 · #604C7F

Valspar

Sumptuous Purple 4010-10

ΔE 48 · #564371

Sherwin-Williams

Fully Purple SW6983

ΔE 48.4 · #514C7E

Kobra

Violet 26

ΔE 50.6 · #7B598F

IKEA

IKEA128 128

ΔE 57.1 · #4A72B0

Farrow & Ball

Pitch Blue 220

ΔE 66 · #636E8F

Light Reflectance & Undertone

Light Reflectance Value (LRV)

1/100

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

#040273

#727402

Analogous

#023974

#040273

#3D0274

Triadic

#040273

#740402

#027404

Split-Complementary

#040273

#743D02

#397402

Tetradic

#040273

#740239

#727402

#02743D

Monochromatic

#010019

#010128

#040273

#0603BF

#1713FB

Rectangle

#040273

#740272

#727402

#027404

Compound

#040273

#3D0274

#727402

#397402

Variations

Lighter

#0603C1

#2B28EA

#8D8CE9

Darker

#02005E

#010041

#010026

Saturation

#2A2A4C

#040274

#030174

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

16.65:1

AAA

vs Black

1.26:1

Fail

Deuteranopia

#040273

#002273

Original → Simulated

Protanopia

#040273

#02026C

Original → Simulated

Tritanopia

#040273

#002F1B

Original → Simulated

Color Psychology

Focused · Cooling

Deep Blue 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

#422E71

Warm Bulb 2700K

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

#040273

Daylight 5500K

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

#303396

Cool Bulb 6500K

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

Pairs With

#E7E7EE

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.

#585A0A

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: #040273;

CSS — background

background-color: #040273;

CSS Variable

--color-deep-blue: #040273;

Tailwind v3 — config

colors: { 'deep-blue': '#040273' }

Tailwind — arbitrary

bg-[#040273] text-[#040273]

SCSS

$deep-blue: #040273;

Similar Colors

Blue

#233872 · ΔE 40.6

Warriors Blue

#00498D · ΔE 42.9

Scandinavian Blue

#4E4E8C · ΔE 43.5

Mystical Grape

#664B86 · ΔE 44.0

Basic Blue

#3F457D · ΔE 44.1

Starry Night Blue

#334076 · ΔE 44.3

Evening Blue

#004E93 · ΔE 44.4

Delphinium

#304C89 · ΔE 45.1

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 #040273?

#040273 is Deep Blue, a deep blue with a cool undertone.

Is #040273 warm or cool?

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

What rooms work best with Deep Blue?

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

What colors pair well with Deep Blue?

Deep Blue 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 Deep Blue?

You can download Deep Blue 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 Deep Blue?

The hex code is #040273. In RGB it's 4, 2, 115, and in HSL it's 241°, 97%, 23%.

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