BLUES

Postcard Perfect

#6E91B3

RGB 110, 145, 179 · HSL 210°, 31%, 57% · CMYK 39, 19, 0, 30

Postcard Perfect is #6E91B3 in HEX — rgb(110, 145, 179), hsl(210°, 31%, 57%), cmyk(39%, 19%, 0%, 30%).

Postcard Perfect pulls into the mid-tone end of the blues spectrum — HSL 210°, 31%, 57%. 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#6E91B3

RGB110, 145, 179

HSL210°, 31%, 57%

HSV210°, 39%, 70%

CMYK39, 19, 0, 30

Decimal7246259

CSS RGBrgb(110, 145, 179)

CSS HSLhsl(210, 31%, 57%)

Paint Matches — this color across 16 brands

Vista Paint

Postcard Perfect K-114

Exact match

Hallman-Lindsay

Heavenly Sky 618

ΔE 0.9 · #6B90B3

Farrow & Ball

Cook's Blue 237

ΔE 1.4 · #6A90B4

Dulux

Distant Sky S39D4

ΔE 1.5 · #6F8FAF

Behr

Mysteria 580F-5

ΔE 2.2 · #6791B2

Benjamin Moore

Mariner's CC-876

ΔE 2.6 · #6C8EB4

Dunn-Edwards

Ocean City DE5879

ΔE 3 · #7896BA

Valspar

Splendid Blue 4004-6A

ΔE 3.1 · #7795B3

IKEA

IKEA086 86

ΔE 3.4 · #748DAC

Sherwin-Williams

Scanda SW6529

ΔE 3.4 · #6B8CA9

Kilz

Just Chill RC150-01

ΔE 3.7 · #6888AC

PPG

Blue Promise 1161-4

ΔE 4.7 · #729CC2

Dutch Boy

Celestial Horizon DCP-0589

ΔE 9.7 · #8FA4BF

RAL

Pigeon Blue 5014

ΔE 14.1 · #606E8C

Kobra

Grey 42

ΔE 16.1 · #889099

Colorhouse

Water .05 Water-05

ΔE 16.4 · #82979D

Light Reflectance & Undertone

Light Reflectance Value (LRV)

27/100

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

#6E91B3

#B3916F

Analogous

#6FB3B3

#6E91B3

#6F6FB3

Triadic

#6E91B3

#B36F91

#91B36F

Split-Complementary

#6E91B3

#B36F6F

#B3B36F

Tetradic

#6E91B3

#B36FB3

#B3916F

#6FB36F

Monochromatic

#30455A

#4A6B8C

#6E91B3

#A1B8CE

#D4DEE8

Rectangle

#6E91B3

#916FB3

#B3916F

#91B36F

Compound

#6E91B3

#6F6FB3

#B3916F

#B3B36F

Variations

Lighter

#8CA7C2

#ACBDCF

#D0D9E1

Darker

#4E749A

#35506B

#1E2F3F

Saturation

#87919C

#6F91B3

#4A91D9

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

3.30:1

AA Large

vs Black

6.36:1

Deuteranopia

#6E91B3

#7C8AB4

Original → Simulated

Protanopia

#6E91B3

#8C8CAF

Original → Simulated

Tritanopia

#6E91B3

#6B9792

Original → Simulated

Color Psychology

Focused · Cooling

Postcard Perfect 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

#9299A1

Warm Bulb 2700K

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

#6E91B3

Daylight 5500K

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

#7F9EC6

Cool Bulb 6500K

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

Pairs With

#E9EBEC

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.

#9C7C5B

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: #6E91B3;

CSS — background

background-color: #6E91B3;

CSS Variable

--color-postcard-perfect: #6E91B3;

Tailwind v3 — config

colors: { 'postcard-perfect': '#6E91B3' }

Tailwind — arbitrary

bg-[#6E91B3] text-[#6E91B3]

SCSS

$postcard-perfect: #6E91B3;

Similar Colors

Mariner's Tale

#6B8DB3 · ΔE 2.8

Lazy Sunday

#5E8FB6 · ΔE 4.6

Old Blue Jeans

#6B89A3 · ΔE 5.4

Steel Blue

#879EBF · ΔE 6.7

Yin Yang

#6A82A8 · ΔE 6.8

Blue Nose

#63879F · ΔE 7.1

Stratford Blue

#7685A1 · ΔE 7.6

Poolside

#5394B4 · ΔE 8.3

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 #6E91B3?

#6E91B3 is Postcard Perfect, a mid-tone blue with a cool undertone.

Is #6E91B3 warm or cool?

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

What rooms work best with Postcard Perfect?

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

What colors pair well with Postcard Perfect?

Postcard Perfect 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 Postcard Perfect?

You can download Postcard Perfect 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 Postcard Perfect?

The hex code is #6E91B3. In RGB it's 110, 145, 179, and in HSL it's 210°, 31%, 57%.

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