BLUES

North Sea

#1D78AB

RGB 29, 120, 171 · HSL 202°, 71%, 39% · CMYK 83, 30, 0, 33

North Sea is #1D78AB in HEX — rgb(29, 120, 171), hsl(202°, 71%, 39%), cmyk(83%, 30%, 0%, 33%).

North Sea pulls into the rich end of the blues spectrum — HSL 202°, 71%, 39%. 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#1D78AB

RGB29, 120, 171

HSL202°, 71%, 39%

HSV202°, 83%, 67%

CMYK83, 30, 0, 33

Decimal1931435

CSS RGBrgb(29, 120, 171)

CSS HSLhsl(202, 71%, 39%)

Paint Matches — this color across 16 brands

PPG

North Sea 1239-6

Exact match

Dulux

Reef Escape S35F6

ΔE 2 · #047AAD

Benjamin Moore

Blue 784

ΔE 2.6 · #2575A4

Behr

Sojourn Blue M500-5

ΔE 2.7 · #3077A7

Dunn-Edwards

Summer Lake DE5838

ΔE 2.9 · #0077A7

Kilz

Aspiration RH190

ΔE 4.4 · #217AB4

Kobra

Blue 29

ΔE 4.5 · #1882B4

Sherwin-Williams

Danube SW6803

ΔE 4.8 · #2377A2

Vista Paint

Wakeby Beach K-137

ΔE 6 · #3E7DA8

Valspar

Cosmic Blue 4008-10C

ΔE 6.2 · #147EBB

RAL

Light Blue 5012

ΔE 6.8 · #3B83BD

Hallman-Lindsay

Bowen Blue historic-bowen-blue

ΔE 7.2 · #126DA8

IKEA

IKEA128 128

ΔE 12.7 · #4A72B0

Farrow & Ball

Cook's Blue 237

ΔE 16 · #6A90B4

Dutch Boy

Blue Sea VS-9451

ΔE 21.2 · #2D61AD

Colorhouse

Dream .06 Dream-06

ΔE 25.7 · #0E707B

Light Reflectance & Undertone

Light Reflectance Value (LRV)

17/100

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 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

#1D78AB

#AA511D

Analogous

#1DAA97

#1D78AB

#1D30AA

Triadic

#1D78AB

#AA1D76

#76AA1D

Split-Complementary

#1D78AB

#AA1D30

#AA971D

Tetradic

#1D78AB

#971DAA

#AA511D

#30AA1D

Monochromatic

#071B27

#124969

#1D78AB

#36A0DD

#78BFE8

Rectangle

#1D78AB

#511DAA

#AA511D

#76AA1D

Compound

#1D78AB

#1D30AA

#AA511D

#AA971D

Variations

Lighter

#2A9ADB

#69B1DA

#ADD0E4

Darker

#145F8B

#0C4261

#06273A

Saturation

#4E6979

#1D76AA

#0E7AB8

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

4.85:1

vs Black

4.33:1

AA Large

Deuteranopia

#1D78AB

#506BAC

Original → Simulated

Protanopia

#1D78AB

#6F6FA5

Original → Simulated

Tritanopia

#1D78AB

#008179

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

#55879B

Warm Bulb 2700K

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

#1D78AB

Daylight 5500K

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

#428CC0

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.

#884722

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: #1D78AB;

CSS — background

background-color: #1D78AB;

CSS Variable

--color-north-sea: #1D78AB;

Tailwind v3 — config

colors: { 'north-sea': '#1D78AB' }

Tailwind — arbitrary

bg-[#1D78AB] text-[#1D78AB]

SCSS

$north-sea: #1D78AB;

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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 #1D78AB?

#1D78AB is North Sea, a deep blue with a cool undertone.

Is #1D78AB 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 #1D78AB. In RGB it's 29, 120, 171, and in HSL it's 202°, 71%, 39%.

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