BLUES

Cousteau

#55A9D6

RGB 85, 169, 214 · HSL 201°, 61%, 59% · CMYK 60, 21, 0, 16

Cousteau is #55A9D6 in HEX — rgb(85, 169, 214), hsl(201°, 61%, 59%), cmyk(60%, 21%, 0%, 16%).

Cousteau pulls into the mid-tone end of the blues spectrum — HSL 201°, 61%, 59%. 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#55A9D6

RGB85, 169, 214

HSL201°, 61%, 59%

HSV201°, 60%, 84%

CMYK60, 21, 0, 16

Decimal5614038

CSS RGBrgb(85, 169, 214)

CSS HSLhsl(201, 61%, 59%)

Paint Matches — this color across 16 brands

Dulux

Blue Astro S35G3 · SB8D4

ΔE 1.8 · #50ACD9

Behr

Brittany Blue M510-4

ΔE 2.7 · #60A7D3

Hallman-Lindsay

Robin's Egg historic-robins-egg

ΔE 3.2 · #64B0DC

Vista Paint

Robin's Egg C-1370

ΔE 3.4 · #67ADD9

PPG

Salem Blue 1239-4

ΔE 3.7 · #66A9D3

Benjamin Moore

Blue 782

ΔE 4.2 · #5FACD2

Kilz

Serene Stream RD240-02

ΔE 4.2 · #40A4CE

Dunn-Edwards

Sail Away DE5836

ΔE 5 · #55B4DE

Valspar

Skyscape 4007-10A

ΔE 5.5 · #70ADD7

Farrow & Ball

St Giles Blue 280

ΔE 5.8 · #599EC4

Sherwin-Williams

Jacaranda SW6802

ΔE 7.4 · #5A9EC0

Kobra

Blue 28

ΔE 12.8 · #4EB3CD

IKEA

IKEA084 84

ΔE 15.2 · #83AAC1

Dutch Boy

Sky Blue D-6742

ΔE 15.9 · #7AC2D8

RAL

Light Blue 5012

ΔE 17 · #3B83BD

Colorhouse

Water .05 Water-05

ΔE 26 · #82979D

Light Reflectance & Undertone

Light Reflectance Value (LRV)

35/100

Medium

0 · DarkLight · 100

Balanced reflectance — holds colour without washing out. Versatile for most rooms and the most forgiving range for true-to-chip results.

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

#55A9D6

#D68357

Analogous

#57D6C3

#55A9D6

#576AD6

Triadic

#55A9D6

#D657AA

#AAD657

Split-Complementary

#55A9D6

#D6576A

#D6C357

Tetradic

#55A9D6

#C357D6

#D68357

#6AD657

Monochromatic

#1D5777

#2C85B5

#55A9D6

#94C9E5

#D2E8F4

Rectangle

#55A9D6

#8357D6

#D68357

#AAD657

Compound

#55A9D6

#576AD6

#D68357

#D6C357

Variations

Lighter

#78BBDE

#A0CAE1

#CBDFEA

Darker

#2B8FC5

#1B638A

#0E3A52

Saturation

#839CAA

#57AAD6

#42B0EB

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

2.61:1

Fail

vs Black

8.03:1

AAA

Deuteranopia

#55A9D6

#8299D7

Original → Simulated

Protanopia

#55A9D6

#9F9FD1

Original → Simulated

Tritanopia

#55A9D6

#4FB0A9

Original → Simulated

Color Psychology

Focused · Cooling

Cousteau 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

#7FABBC

Warm Bulb 2700K

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

#55A9D6

Daylight 5500K

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

#6CB0E0

Cool Bulb 6500K

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

Pairs With

#E8EBED

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.

#C26C3E

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 · Trim · Soft furniture

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: #55A9D6;

CSS — background

background-color: #55A9D6;

CSS Variable

--color-cousteau: #55A9D6;

Tailwind v3 — config

colors: { 'cousteau': '#55A9D6' }

Tailwind — arbitrary

bg-[#55A9D6] text-[#55A9D6]

SCSS

$cousteau: #55A9D6;

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#6EB8E5 · ΔE 6.1

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#3F9DD1 · ΔE 6.2

Lake Tahoe

#4298C4 · ΔE 6.4

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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 #55A9D6?

#55A9D6 is Cousteau, a mid-tone blue with a cool undertone.

Is #55A9D6 warm or cool?

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

What rooms work best with Cousteau?

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

What colors pair well with Cousteau?

Cousteau 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 Cousteau?

You can download Cousteau 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 Cousteau?

The hex code is #55A9D6. In RGB it's 85, 169, 214, and in HSL it's 201°, 61%, 59%.

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