BLUES

Congress Blue

#02478E

RGB 2, 71, 142 · HSL 210°, 97%, 28% · CMYK 99, 50, 0, 44

Congress Blue is #02478E in HEX — rgb(2, 71, 142), hsl(210°, 97%, 28%), cmyk(99%, 50%, 0%, 44%).

Congress Blue pulls into the deep end of the blues spectrum — HSL 210°, 97%, 28%. 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#02478E

RGB2, 71, 142

HSL210°, 97%, 28%

HSV210°, 99%, 56%

CMYK99, 50, 0, 44

Decimal149390

CSS RGBrgb(2, 71, 142)

CSS HSLhsl(210, 97%, 28%)

Paint Matches — this color across 16 brands

Behr

Royal Breeze S-H-560

ΔE 1.7 · #0C4B93

Colorhouse

Petal .05 Petal-05

ΔE 3 · #1F4992

Vista Paint

Dancing Sea C-640

ΔE 3.4 · #224B8F

Benjamin Moore

Evening 2066-20

ΔE 4.2 · #014F94

Hallman-Lindsay

Dancing Sea 641

ΔE 4.4 · #1C4D8F

Dulux

Mondrian Blue S39H9

ΔE 4.5 · #0F4B8C

Dunn-Edwards

Deep Sapphire DEA137

ΔE 5.2 · #1D4E8F

PPG

Florentine Lapis 1244-7

ΔE 8.5 · #1C5798

Dutch Boy

Blue Royale VS-9550

ΔE 9.9 · #243F90

RAL

Traffic Blue 5017

ΔE 10.4 · #063971

Sherwin-Williams

Frank Blue SW6967

ΔE 12.5 · #225288

Kilz

Navy Dress RH210

ΔE 13.4 · #285489

Valspar

Deep Space 4008-8C

ΔE 14.6 · #38619B

Kobra

Blue 30

ΔE 17.9 · #195584

IKEA

IKEA128 128

ΔE 19.5 · #4A72B0

Farrow & Ball

Pitch Blue 220

ΔE 30.5 · #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

#02478E

#8D4702

Analogous

#028D8D

#02478E

#02028D

Triadic

#02478E

#8D0247

#478D02

Split-Complementary

#02478E

#8D0202

#8D8D02

Tetradic

#02478E

#8D028D

#8D4702

#028D02

Monochromatic

#000D19

#012141

#02478E

#036ED8

#2C94FC

Rectangle

#02478E

#47028D

#8D4702

#478D02

Compound

#02478E

#02028D

#8D4702

#8D8D02

Variations

Lighter

#036CD5

#3691EC

#93BFEA

Darker

#003972

#00274F

#00172E

Saturation

#33475C

#02478D

#01478E

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

9.15:1

AAA

vs Black

2.29:1

Fail

Deuteranopia

#02478E

#10468E

Original → Simulated

Protanopia

#02478E

#414187

Original → Simulated

Tritanopia

#02478E

#00574C

Original → Simulated

Color Psychology

Focused · Cooling

Congress 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

#416286

Warm Bulb 2700K

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

#02478E

Daylight 5500K

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

#2E67AA

Cool Bulb 6500K

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

Pairs With

#E7EBEE

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.

#6D3D0C

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: #02478E;

CSS — background

background-color: #02478E;

CSS Variable

--color-congress-blue: #02478E;

Tailwind v3 — config

colors: { 'congress-blue': '#02478E' }

Tailwind — arbitrary

bg-[#02478E] text-[#02478E]

SCSS

$congress-blue: #02478E;

Similar Colors

Warriors Blue

#00498D · ΔE 2.5

Evening Blue

#004E93 · ΔE 3.8

Delphinium

#304C89 · ΔE 7.7

Twilight Blue

#365496 · ΔE 7.8

Dark Royal Blue

#144B86 · ΔE 8.2

Blue

#233872 · ΔE 10.4

Starry Night Blue

#334076 · ΔE 12.1

Basic Blue

#3F457D · ΔE 12.4

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 #02478E?

#02478E is Congress Blue, a deep blue with a cool undertone.

Is #02478E warm or cool?

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

What rooms work best with Congress Blue?

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

What colors pair well with Congress Blue?

Congress 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 Congress Blue?

You can download Congress 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 Congress Blue?

The hex code is #02478E. In RGB it's 2, 71, 142, and in HSL it's 210°, 97%, 28%.

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