BLUES

Congressional Navy

#100438

RGB 16, 4, 56 · HSL 254°, 87%, 12% · CMYK 71, 93, 0, 78

Congressional Navy is #100438 in HEX — rgb(16, 4, 56), hsl(254°, 87%, 12%), cmyk(71%, 93%, 0%, 78%).

Congressional Navy pulls into the deep end of the blues spectrum — HSL 254°, 87%, 12%. 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#100438

RGB16, 4, 56

HSL254°, 87%, 12%

HSV254°, 93%, 22%

CMYK71, 93, 0, 78

Decimal1049656

CSS RGBrgb(16, 4, 56)

CSS HSLhsl(254, 87%, 12%)

Paint Matches — this color across 16 brands

RAL

Ultramarine Blue 5002

ΔE 12.5 · #20214F

Behr

Blackberry Harvest S-H-660

ΔE 16.9 · #312B62

Dulux

Passionate Blue S41H9

ΔE 22.7 · #1F3665

Vista Paint

Hot Sauna C-1270

ΔE 23.1 · #3C3973

Benjamin Moore

Blue 2066-10

ΔE 23.3 · #243973

Hallman-Lindsay

Newport Indigo historic-newport-indigo

ΔE 25.1 · #313D6C

Sherwin-Williams

Dewberry SW6552

ΔE 25.5 · #3E385A

Dutch Boy

Royal Blue D-6740

ΔE 25.8 · #1D375C

Kilz

Ruling Royalty TB-50

ΔE 26.5 · #313048

Dunn-Edwards

Cobalt DEA140

ΔE 27.1 · #3C4378

Valspar

Sumptuous Purple 4010-10

ΔE 28.7 · #564371

PPG

Daring Indigo 1166-7 · 13-25

ΔE 30.3 · #374874

Colorhouse

Petal .07 Petal-07

ΔE 31.7 · #652F53

Kobra

Blue 31

ΔE 32.3 · #334059

IKEA

IKEA163 163

ΔE 35.8 · #423A45

Farrow & Ball

Pelt 254

ΔE 38 · #50414C

Light Reflectance & Undertone

Light Reflectance Value (LRV)

0/100

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

#100438

#2D3904

Analogous

#041239

#100438

#2B0439

Triadic

#100438

#391004

#043910

Split-Complementary

#100438

#392B04

#123904

Tetradic

#100438

#390412

#2D3904

#04392B

Monochromatic

#070218

#100438

#250981

#390EC8

Rectangle

#100438

#39042D

#2D3904

#043910

Compound

#100438

#2B0439

#2D3904

#123904

Variations

Lighter

#280A8D

#491FD1

#9781E0

Darker

#0D022F

#080121

#050014

Saturation

#1A1727

#100439

#0F023B

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

19.15:1

AAA

vs Black

1.10:1

Fail

Deuteranopia

#100438

#001238

Original → Simulated

Protanopia

#100438

#060634

Original → Simulated

Tritanopia

#100438

#07150C

Original → Simulated

Color Psychology

Focused · Cooling

Congressional Navy 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

#4B3045

Warm Bulb 2700K

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

#100438

Daylight 5500K

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

#393569

Cool Bulb 6500K

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

Pairs With

#E9E7EE

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.

#40500C

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: #100438;

CSS — background

background-color: #100438;

CSS Variable

--color-congressional-navy: #100438;

Tailwind v3 — config

colors: { 'congressional-navy': '#100438' }

Tailwind — arbitrary

bg-[#100438] text-[#100438]

SCSS

$congressional-navy: #100438;

Similar Colors

Blue

#233872 · ΔE 22.9

Admiral Blue

#2B3762 · ΔE 23.2

Midnight Navy

#333356 · ΔE 23.2

Blue Grotto

#353963 · ΔE 23.9

Bold Blue

#2B3558 · ΔE 24.4

Grape Gum

#413D6D · ΔE 24.8

Starry Night Blue

#334076 · ΔE 25.9

Purplicious

#4D3354 · ΔE 25.9

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 #100438?

#100438 is Congressional Navy, a near-black blue with a cool undertone.

Is #100438 warm or cool?

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

What rooms work best with Congressional Navy?

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

What colors pair well with Congressional Navy?

Congressional Navy 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 Congressional Navy?

You can download Congressional Navy 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 Congressional Navy?

The hex code is #100438. In RGB it's 16, 4, 56, and in HSL it's 254°, 87%, 12%.

← All colors