BLUES

Centurian Blue

#158AAB

RGB 21, 138, 171 · HSL 193°, 78%, 38% · CMYK 88, 19, 0, 33

Centurian Blue is #158AAB in HEX — rgb(21, 138, 171), hsl(193°, 78%, 38%), cmyk(88%, 19%, 0%, 33%).

Centurian Blue pulls into the rich end of the blues spectrum — HSL 193°, 78%, 38%. 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#158AAB

RGB21, 138, 171

HSL193°, 78%, 38%

HSV193°, 88%, 67%

CMYK88, 19, 0, 33

Decimal1411755

CSS RGBrgb(21, 138, 171)

CSS HSLhsl(193, 78%, 38%)

Paint Matches — this color across 16 brands

Kilz

Centurian Blue RH180

Exact match

Dunn-Edwards

Mediterranean Sea DE5830

ΔE 1.4 · #1E8CAB

Dulux

Bird Of Paradise S33F5

ΔE 1.8 · #0089A8

Behr

Tibetan Turquoise MQ4-53

ΔE 2.4 · #0086AA

Valspar

Wishing Well 5002-10C

ΔE 2.7 · #0A85A9

Vista Paint

Puerto Mio K-185

ΔE 3 · #0089A6

Sherwin-Williams

Blue Mosque SW6789

ΔE 4.2 · #01819E

PPG

Blue Paisley 1238-6

ΔE 5.5 · #2282A8

Benjamin Moore

Randolph CW-615

ΔE 6.7 · #3D83A0

Hallman-Lindsay

Blue Bliss 675

ΔE 7.3 · #0092AA

Farrow & Ball

St Giles Blue 280

ΔE 11.5 · #599EC4

Kobra

Blue 29

ΔE 11.7 · #1882B4

IKEA

IKEA118 118

ΔE 15.1 · #317983

RAL

Turquoise Blue 5018

ΔE 15.4 · #3F888F

Colorhouse

Dream .06 Dream-06

ΔE 16.5 · #0E707B

Dutch Boy

Ocean Blue D-6743

ΔE 22.1 · #4C6A74

Light Reflectance & Undertone

Light Reflectance Value (LRV)

21/100

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

#158AAB

#AC3615

Analogous

#15AC82

#158AAB

#1540AC

Triadic

#158AAB

#AC158C

#8CAC15

Split-Complementary

#158AAB

#AC1540

#AC8215

Tetradic

#158AAB

#8215AC

#AC3615

#40AC15

Monochromatic

#041D24

#0D5568

#158AAB

#2ABCE5

#6ED1ED

Rectangle

#158AAB

#3615AC

#AC3615

#8CAC15

Compound

#158AAB

#1540AC

#AC3615

#AC8215

Variations

Lighter

#1EB8E3

#61C4DF

#A9D9E6

Darker

#0E718D

#084F63

#032F3B

Saturation

#4A6E78

#158CAC

#0B92B7

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

4.00:1

AA Large

vs Black

5.26:1

Deuteranopia

#158AAB

#6377AC

Original → Simulated

Protanopia

#158AAB

#7F7FA7

Original → Simulated

Tritanopia

#158AAB

#098F89

Original → Simulated

Color Psychology

Focused · Cooling

Centurian 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

#4F949B

Warm Bulb 2700K

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

#158AAB

Daylight 5500K

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

#3C99C0

Cool Bulb 6500K

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

Pairs With

#E8ECED

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.

#89331C

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: #158AAB;

CSS — background

background-color: #158AAB;

CSS Variable

--color-centurian-blue: #158AAB;

Tailwind v3 — config

colors: { 'centurian-blue': '#158AAB' }

Tailwind — arbitrary

bg-[#158AAB] text-[#158AAB]

SCSS

$centurian-blue: #158AAB;

Similar Colors

Randolph Blue

#3C829F · ΔE 6.8

Pacific Palisades

#008299 · ΔE 6.9

Cool Blue

#419AB7 · ΔE 7.0

Electric Blue

#3E90B8 · ΔE 7.2

Americana

#007594 · ΔE 8.2

Dream I Can Fly

#1FA0C1 · ΔE 8.5

Poolside

#5394B4 · ΔE 8.8

Yosemite Blue

#17A1C8 · ΔE 9.3

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 #158AAB?

#158AAB is Centurian Blue, a deep blue with a cool undertone.

Is #158AAB warm or cool?

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

What rooms work best with Centurian Blue?

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

What colors pair well with Centurian Blue?

Centurian 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 Centurian Blue?

You can download Centurian 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 Centurian Blue?

The hex code is #158AAB. In RGB it's 21, 138, 171, and in HSL it's 193°, 78%, 38%.

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