BLUES

North Sea

#859BB1

RGB 133, 155, 177 · HSL 210°, 22%, 61% · CMYK 25, 12, 0, 31

North Sea is #859BB1 in HEX — rgb(133, 155, 177), hsl(210°, 22%, 61%), cmyk(25%, 12%, 0%, 31%).

North Sea pulls into the light end of the blues spectrum — HSL 210°, 22%, 61%. The muted saturation makes it quiet but present, 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#859BB1

RGB133, 155, 177

HSL210°, 22%, 61%

HSV210°, 25%, 69%

CMYK25, 12, 0, 31

Decimal8756145

CSS RGBrgb(133, 155, 177)

CSS HSLhsl(210, 22%, 61%)

Paint Matches — this color across 16 brands

Hallman-Lindsay

North Sea 625

Exact match

Vista Paint

North Sea C-624

ΔE 0.9 · #8599AF

Dunn-Edwards

Downpour DE5871

ΔE 1.2 · #819AB1

Behr

China Silk PPU15-10

ΔE 1.4 · #8A9EB4

Valspar

Office Blue 4005-6A

ΔE 2.1 · #829DB1

Kilz

Blue Dust RC270-01

ΔE 2.4 · #7D99AE

Benjamin Moore

Denim 838 · CC-770

ΔE 2.5 · #86A1B7

Dulux

Astro Bound S39C3

ΔE 2.5 · #89A1B9

Sherwin-Williams

Dried Lavender SW9072

ΔE 2.8 · #8595AA

PPG

Americana 1152-4

ΔE 3.7 · #7F9DAF

Dutch Boy

Celestial Horizon DCP-0589

ΔE 4.5 · #8FA4BF

IKEA

IKEA121 121

ΔE 5.2 · #8896B3

Farrow & Ball

Stone Blue 86

ΔE 7.9 · #7997A1

Kobra

Grey 42

ΔE 9.1 · #889099

Colorhouse

Water .05 Water-05

ΔE 9.2 · #82979D

RAL

Window Grey 7040

ΔE 9.9 · #9DA1AA

Light Reflectance & Undertone

Light Reflectance Value (LRV)

32/100

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

#859BB1

#B19C86

Analogous

#86B1B1

#859BB1

#8686B1

Triadic

#859BB1

#B1869C

#9CB186

Split-Complementary

#859BB1

#B18686

#B1B186

Tetradic

#859BB1

#B186B1

#B19C86

#86B186

Monochromatic

#3E4F60

#5B758F

#859BB1

#B4C2CF

#E3E8ED

Rectangle

#859BB1

#9C86B1

#B19C86

#9CB186

Compound

#859BB1

#8686B1

#B19C86

#B1B186

Variations

Lighter

#9EAFC1

#B8C3CE

#D7DCE2

Darker

#607C99

#41566A

#25323E

Saturation

#959CA2

#869CB1

#5F9CD8

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

2.87:1

Fail

vs Black

7.32:1

AAA

Deuteranopia

#859BB1

#8E96B2

Original → Simulated

Protanopia

#859BB1

#9898AE

Original → Simulated

Tritanopia

#859BB1

#839E9B

Original → Simulated

Color Psychology

Focused · Cooling

North Sea 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

#A3A1A0

Warm Bulb 2700K

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

#859BB1

Daylight 5500K

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

#90A6C4

Cool Bulb 6500K

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

Pairs With

#EAEBEB

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.

#A38466

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: #859BB1;

CSS — background

background-color: #859BB1;

CSS Variable

--color-north-sea: #859BB1;

Tailwind v3 — config

colors: { 'north-sea': '#859BB1' }

Tailwind — arbitrary

bg-[#859BB1] text-[#859BB1]

SCSS

$north-sea: #859BB1;

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#85A0B6 · ΔE 2.3

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#93A6BE · ΔE 4.6

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#7F9DAC · ΔE 5.0

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#8690A4 · ΔE 5.3

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#93A0BD · ΔE 5.8

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 #859BB1?

#859BB1 is North Sea, a soft blue with a cool undertone.

Is #859BB1 warm or cool?

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

What rooms work best with North Sea?

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

What colors pair well with North Sea?

North Sea 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 North Sea?

You can download North Sea 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 North Sea?

The hex code is #859BB1. In RGB it's 133, 155, 177, and in HSL it's 210°, 22%, 61%.

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