BLUES

Interstellar Blue

#001155

RGB 0, 17, 85 · HSL 228°, 100%, 17% · CMYK 100, 80, 0, 67

Interstellar Blue is #001155 in HEX — rgb(0, 17, 85), hsl(228°, 100%, 17%), cmyk(100%, 80%, 0%, 67%).

Interstellar Blue pulls into the deep end of the blues spectrum — HSL 228°, 100%, 17%. 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#001155

RGB0, 17, 85

HSL228°, 100%, 17%

HSV228°, 100%, 33%

CMYK100, 80, 0, 67

Decimal4437

CSS RGBrgb(0, 17, 85)

CSS HSLhsl(228, 100%, 17%)

Paint Matches — this color across 16 brands

RAL

Signal Blue 5005

ΔE 13.6 · #1E2D6E

Behr

Lunar Eclipse S-H-630

ΔE 13.9 · #252D6D

Benjamin Moore

Blue 2066-10

ΔE 20.9 · #243973

Vista Paint

Hot Sauna C-1270

ΔE 20.9 · #3C3973

Dutch Boy

Blue Royale VS-9550

ΔE 21.1 · #243F90

Hallman-Lindsay

Frozen Blue 606

ΔE 23.8 · #354079

Dulux

Kellands Pond NZ10F6

ΔE 24.5 · #1F3665

Colorhouse

Petal .05 Petal-05

ΔE 25.5 · #1F4992

Dunn-Edwards

Indigo Night DEA138

ΔE 26.2 · #324680

Sherwin-Williams

Valiant Violet SW6818

ΔE 28.8 · #3E4371

PPG

Crushed Velvet 1245-7

ΔE 29.6 · #445397

Valspar

Sumptuous Purple 4010-10

ΔE 30.1 · #564371

Kilz

Renaissance Tapestry RH240

ΔE 30.5 · #48436D

Kobra

Blue 30

ΔE 37.7 · #195584

IKEA

IKEA122 122

ΔE 40.6 · #3A5170

Farrow & Ball

Pelt 254

ΔE 45.8 · #50414C

Light Reflectance & Undertone

Light Reflectance Value (LRV)

1/100

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

#001155

#574500

Analogous

#003D57

#001155

#1A0057

Triadic

#001155

#570011

#115700

Split-Complementary

#001155

#571A00

#3D5700

Tetradic

#001155

#57003D

#574500

#00571A

Monochromatic

#00051A

#001155

#0021A3

#0030F0

Rectangle

#001155

#450057

#574500

#115700

Compound

#001155

#1A0057

#574500

#3D5700

Variations

Lighter

#0022AB

#143FEC

#8196E9

Darker

#000E45

#000A30

#00061C

Saturation

#1E2438

#001157

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

17.34:1

AAA

vs Black

1.21:1

Fail

Deuteranopia

#001155

#001C55

Original → Simulated

Protanopia

#001155

#0F0F50

Original → Simulated

Tritanopia

#001155

#00261A

Original → Simulated

Color Psychology

Focused · Cooling

Interstellar 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

#3F395B

Warm Bulb 2700K

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

#001155

Daylight 5500K

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

#2D3E7F

Cool Bulb 6500K

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

Pairs With

#E7E8EE

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.

#534409

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: #001155;

CSS — background

background-color: #001155;

CSS Variable

--color-interstellar-blue: #001155;

Tailwind v3 — config

colors: { 'interstellar-blue': '#001155' }

Tailwind — arbitrary

bg-[#001155] text-[#001155]

SCSS

$interstellar-blue: #001155;

Similar Colors

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#233872 · ΔE 20.5

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#334076 · ΔE 24.8

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#413D6D · ΔE 25.9

Basic Blue

#3F457D · ΔE 26.1

Admiral Blue

#2B3762 · ΔE 26.2

Warriors Blue

#00498D · ΔE 26.9

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#353963 · ΔE 27.1

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#304C89 · ΔE 28.2

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 #001155?

#001155 is Interstellar Blue, a near-black blue with a cool undertone.

Is #001155 warm or cool?

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

What rooms work best with Interstellar Blue?

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

What colors pair well with Interstellar Blue?

Interstellar 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 Interstellar Blue?

You can download Interstellar 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 Interstellar Blue?

The hex code is #001155. In RGB it's 0, 17, 85, and in HSL it's 228°, 100%, 17%.

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