BLUES

Blue Mosque

#01819E

RGB 1, 129, 158 · HSL 191°, 99%, 31% · CMYK 99, 18, 0, 38

Blue Mosque is #01819E in HEX — rgb(1, 129, 158), hsl(191°, 99%, 31%), cmyk(99%, 18%, 0%, 38%).

Blue Mosque pulls into the rich end of the blues spectrum — HSL 191°, 99%, 31%. 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#01819E

RGB1, 129, 158

HSL191°, 99%, 31%

HSV191°, 99%, 62%

CMYK99, 18, 0, 38

Decimal98718

CSS RGBrgb(1, 129, 158)

CSS HSLhsl(191, 99%, 31%)

Paint Matches — this color across 16 brands

Sherwin-Williams

Blue Mosque SW6789

Exact match

Valspar

Garden Pool 5003-10C

ΔE 0.6 · #0E829F

Dulux

Kingfisher Sheen S33H6

ΔE 1.3 · #0084A2

Vista Paint

Puerto Mio K-185

ΔE 3.2 · #0089A6

Benjamin Moore

Pacific 762

ΔE 4 · #01839A

Kilz

Centurian Blue RH180

ΔE 4.2 · #158AAB

PPG

Bimini Blue 1235-7

ΔE 4.4 · #007A91

Dunn-Edwards

Mediterranean Sea DE5830

ΔE 4.4 · #1E8CAB

Behr

Tibetan Turquoise MQ4-53

ΔE 4.6 · #0086AA

Hallman-Lindsay

Blue Bliss 675

ΔE 7.8 · #0092AA

IKEA

IKEA118 118

ΔE 12 · #317983

RAL

Water Blue 5021

ΔE 12.2 · #256D7B

Colorhouse

Dream .06 Dream-06

ΔE 12.6 · #0E707B

Kobra

Blue 29

ΔE 13.6 · #1882B4

Farrow & Ball

St Giles Blue 280

ΔE 15 · #599EC4

Dutch Boy

Ocean Blue D-6743

ΔE 19.5 · #4C6A74

Light Reflectance & Undertone

Light Reflectance Value (LRV)

18/100

Dark

0 · DarkLight · 100

Soaks up light and feels moody and intimate. Great for studies, dining rooms and accent walls; pair with ample lighting.

Undertone

TemperatureCool MasstoneTeal UndertoneGreen

Reads as a cool teal with a green undertone showing through, especially in daylight. Pair trim and adjacent colours to either calm or amplify that undertone.

Color Theory

Complementary

#01819E

#9D1D01

Analogous

#019D6C

#01819E

#01329D

Triadic

#01819E

#9D0181

#819D01

Split-Complementary

#01819E

#9D0132

#9D6C01

Tetradic

#01819E

#6C019D

#9D1D01

#329D01

Monochromatic

#001519

#004251

#01819E

#01BFE9

#39DAFE

Rectangle

#01819E

#1D019D

#9D1D01

#819D01

Compound

#01819E

#01329D

#9D1D01

#9D6C01

Variations

Lighter

#01BAE3

#3DCEEE

#97DCEC

Darker

#00677E

#004757

#002933

Saturation

#385E67

#01819D

#00819E

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

4.53:1

vs Black

4.64:1

Deuteranopia

#01819E

#5C6E9F

Original → Simulated

Protanopia

#01819E

#76769B

Original → Simulated

Tritanopia

#01819E

#00857F

Original → Simulated

Color Psychology

Focused · Cooling

Blue Mosque 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

#408D92

Warm Bulb 2700K

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

#01819E

Daylight 5500K

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

#2D92B6

Cool Bulb 6500K

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

Pairs With

#E7EDEE

Trim

Matched off-white

Same hue at 92% lightness — trim reads coordinated, not stark.

#F7F8F8

Ceiling

Whisper tint

Near-white with a hint of the hero's undertone — ceiling feels intentional.

#79210D

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: #01819E;

CSS — background

background-color: #01819E;

CSS Variable

--color-blue-mosque: #01819E;

Tailwind v3 — config

colors: { 'blue-mosque': '#01819E' }

Tailwind — arbitrary

bg-[#01819E] text-[#01819E]

SCSS

$blue-mosque: #01819E;

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#008299 · ΔE 3.9

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#26768E · ΔE 6.3

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#3C829F · ΔE 6.5

Caribbean Blue Water

#007B8E · ΔE 6.5

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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 #01819E?

#01819E is Blue Mosque, a deep blue with a cool undertone.

Is #01819E warm or cool?

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

What rooms work best with Blue Mosque?

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

What colors pair well with Blue Mosque?

Blue Mosque 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 Blue Mosque?

You can download Blue Mosque 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 Blue Mosque?

The hex code is #01819E. In RGB it's 1, 129, 158, and in HSL it's 191°, 99%, 31%.

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