BLUES

Twilight Blue

#0A437A

RGB 10, 67, 122 · HSL 209°, 85%, 26% · CMYK 92, 45, 0, 52

Twilight Blue is #0A437A in HEX — rgb(10, 67, 122), hsl(209°, 85%, 26%), cmyk(92%, 45%, 0%, 52%).

Twilight Blue pulls into the deep end of the blues spectrum — HSL 209°, 85%, 26%. 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#0A437A

RGB10, 67, 122

HSL209°, 85%, 26%

HSV209°, 92%, 48%

CMYK92, 45, 0, 52

Decimal672634

CSS RGBrgb(10, 67, 122)

CSS HSLhsl(209, 85%, 26%)

Paint Matches — this color across 16 brands

Dulux

Affinity S39G9

ΔE 3.1 · #18497E

Sherwin-Williams

Honorable Blue SW6811

ΔE 4.1 · #164576

Benjamin Moore

Dark 2065-20

ΔE 4.3 · #154C87

RAL

Traffic Blue 5017

ΔE 4.8 · #063971

PPG

Brilliant Blue 1161-7

ΔE 4.9 · #234E86

Hallman-Lindsay

Florida Waters 599

ΔE 5.1 · #2A4983

Dunn-Edwards

Nautical DEA139

ΔE 5.6 · #2E4A7D

Behr

Elegant Navy M530-7

ΔE 6.2 · #2D437D

Vista Paint

Evening in Paris K-104

ΔE 6.8 · #254280

Kilz

Navy Dress RH210

ΔE 7.6 · #285489

Dutch Boy

Delft Blue 7447

ΔE 7.8 · #003B67

Kobra

Blue 30

ΔE 10.3 · #195584

Valspar

Homecoming Blue 4009-9

ΔE 11.5 · #484E83

Colorhouse

Petal .05 Petal-05

ΔE 12.2 · #1F4992

IKEA

IKEA122 122

ΔE 17.3 · #3A5170

Farrow & Ball

Pitch Blue 220

ΔE 25.1 · #636E8F

Light Reflectance & Undertone

Light Reflectance Value (LRV)

5/100

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

#0A437A

#7B400A

Analogous

#0A7B79

#0A437A

#0A0C7B

Triadic

#0A437A

#7B0A44

#447B0A

Split-Complementary

#0A437A

#7B0A0C

#7B790A

Tetradic

#0A437A

#790A7B

#7B400A

#0C7B0A

Monochromatic

#020D18

#041D34

#0A437A

#106CC1

#2F92EE

Rectangle

#0A437A

#400A7B

#7B400A

#447B0A

Compound

#0A437A

#0A0C7B

#7B400A

#7B790A

Variations

Lighter

#106BC0

#3C91E0

#96BEE4

Darker

#063764

#022647

#00162A

Saturation

#314353

#0A447B

#054480

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

10.02:1

AAA

vs Black

2.10:1

Fail

Deuteranopia

#0A437A

#1D407A

Original → Simulated

Protanopia

#0A437A

#3D3D75

Original → Simulated

Tritanopia

#0A437A

#004F46

Original → Simulated

Color Psychology

Focused · Cooling

Twilight 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

#475F77

Warm Bulb 2700K

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

#0A437A

Daylight 5500K

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

#34649B

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.

#613710

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: #0A437A;

CSS — background

background-color: #0A437A;

CSS Variable

--color-twilight-blue: #0A437A;

Tailwind v3 — config

colors: { 'twilight-blue': '#0A437A' }

Tailwind — arbitrary

bg-[#0A437A] text-[#0A437A]

SCSS

$twilight-blue: #0A437A;

Similar Colors

Dark Royal Blue

#144B86 · ΔE 4.0

Patriot Blue

#184A7C · ΔE 4.8

Delphinium

#304C89 · ΔE 7.2

Starry Night Blue

#334076 · ΔE 7.7

Blueberry Hill

#335183 · ΔE 7.9

Blue

#233872 · ΔE 8.1

Warriors Blue

#00498D · ΔE 8.3

Blue Suede Shoes

#2F5688 · ΔE 9.2

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 #0A437A?

#0A437A is Twilight Blue, a deep blue with a cool undertone.

Is #0A437A warm or cool?

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

What rooms work best with Twilight Blue?

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

What colors pair well with Twilight Blue?

Twilight 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 Twilight Blue?

You can download Twilight 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 Twilight Blue?

The hex code is #0A437A. In RGB it's 10, 67, 122, and in HSL it's 209°, 85%, 26%.

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