BLUES

Assault

#1C4374

RGB 28, 67, 116 · HSL 213°, 61%, 28% · CMYK 76, 42, 0, 55

Assault is #1C4374 in HEX — rgb(28, 67, 116), hsl(213°, 61%, 28%), cmyk(76%, 42%, 0%, 55%).

Assault pulls into the deep end of the blues spectrum — HSL 213°, 61%, 28%. The balanced saturation makes it confident without overpowering, 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#1C4374

RGB28, 67, 116

HSL213°, 61%, 28%

HSV213°, 76%, 45%

CMYK76, 42, 0, 55

Decimal1852276

CSS RGBrgb(28, 67, 116)

CSS HSLhsl(213, 61%, 28%)

Paint Matches — this color across 16 brands

Sherwin-Williams

Honorable Blue SW6811

ΔE 1.5 · #164576

Dulux

Demon S40G9

ΔE 1.6 · #224676

Behr

Inked M510-7

ΔE 3 · #234673

Benjamin Moore

Patriot 2064-20

ΔE 3.8 · #194B7D

Dunn-Edwards

Nautical DEA139

ΔE 4.1 · #2E4A7D

PPG

Dragonfly 1162-7

ΔE 5.2 · #314A76

Dutch Boy

Delft Blue 7447

ΔE 5.4 · #003B67

Kilz

Indigo RH220

ΔE 5.9 · #314973

Vista Paint

Sailor's Eyes K-1241

ΔE 6.2 · #394778

Hallman-Lindsay

Newport Indigo historic-newport-indigo

ΔE 6.4 · #313D6C

RAL

Traffic Blue 5017

ΔE 6.9 · #063971

Kobra

Blue 30

ΔE 8.8 · #195584

Valspar

Classic Royal Blue 4009-8

ΔE 9.9 · #465380

IKEA

IKEA122 122

ΔE 13.6 · #3A5170

Colorhouse

Petal .05 Petal-05

ΔE 15.4 · #1F4992

Farrow & Ball

Pitch Blue 220

ΔE 22.5 · #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

#1C4374

#734C1C

Analogous

#1C6F73

#1C4374

#201C73

Triadic

#1C4374

#731C43

#43731C

Split-Complementary

#1C4374

#73201C

#6F731C

Tetradic

#1C4374

#731C6F

#734C1C

#1C7320

Monochromatic

#050C15

#0D1F35

#1C4374

#2B67B1

#538DD5

Rectangle

#1C4374

#4C1C73

#734C1C

#43731C

Compound

#1C4374

#201C73

#734C1C

#6F731C

Variations

Lighter

#2A66AE

#588BCA

#A3BCDA

Darker

#15355E

#0D2542

#071527

Saturation

#3A4654

#1C4373

#0E4281

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

9.98:1

AAA

vs Black

2.10:1

Fail

Deuteranopia

#1C4374

#264074

Original → Simulated

Protanopia

#1C4374

#3E3E6F

Original → Simulated

Tritanopia

#1C4374

#0B4D46

Original → Simulated

Color Psychology

Focused · Cooling

Assault 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

#545F72

Warm Bulb 2700K

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

#1C4374

Daylight 5500K

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

#426496

Cool Bulb 6500K

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

Pairs With

#E8EAED

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.

#5C401D

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: #1C4374;

CSS — background

background-color: #1C4374;

CSS Variable

--color-assault: #1C4374;

Tailwind v3 — config

colors: { 'assault': '#1C4374' }

Tailwind — arbitrary

bg-[#1C4374] text-[#1C4374]

SCSS

$assault: #1C4374;

Similar Colors

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#184A7C · ΔE 3.4

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#335183 · ΔE 6.4

Dark Royal Blue

#144B86 · ΔE 6.8

Starry Night Blue

#334076 · ΔE 7.4

Admiral Blue

#2B3762 · ΔE 7.9

Blue Suede Shoes

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Delphinium

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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 #1C4374?

#1C4374 is Assault, a deep blue with a cool undertone.

Is #1C4374 warm or cool?

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

What rooms work best with Assault?

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

What colors pair well with Assault?

Assault 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 Assault?

You can download Assault 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 Assault?

The hex code is #1C4374. In RGB it's 28, 67, 116, and in HSL it's 213°, 61%, 28%.

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