BLUES

Deep Denim

#6688FF

RGB 102, 136, 255 · HSL 227°, 100%, 70% · CMYK 60, 47, 0, 0

Deep Denim is #6688FF in HEX — rgb(102, 136, 255), hsl(227°, 100%, 70%), cmyk(60%, 47%, 0%, 0%).

Deep Denim pulls into the light end of the blues spectrum — HSL 227°, 100%, 70%. 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#6688FF

RGB102, 136, 255

HSL227°, 100%, 70%

HSV227°, 60%, 100%

CMYK60, 47, 0, 0

Decimal6719743

CSS RGBrgb(102, 136, 255)

CSS HSLhsl(227, 100%, 70%)

Paint Matches — this color across 16 brands

Behr

Magic Moment (620b-6) 620B-6

ΔE 5.9 · #647AEC

Dutch Boy

Blue Sea VS-9451

ΔE 28.6 · #2D61AD

PPG

Blue Calico 1246-7

ΔE 29 · #5868AE

Vista Paint

Purple Wave K-73

ΔE 29.4 · #6A74B7

Hallman-Lindsay

Wind Star 1270

ΔE 29.9 · #6875B7

Dunn-Edwards

Twilight Twinkle DE5907

ΔE 30.1 · #7B85C6

Benjamin Moore

Big 2066-30

ΔE 30.3 · #0167B2

Kobra

Violet 25

ΔE 32.5 · #776BAB

Dulux

Blue Intent S42H7 · SB8F5

ΔE 33.1 · #566EAC

IKEA

IKEA128 128

ΔE 33.7 · #4A72B0

RAL

Sky Blue 5015

ΔE 34.1 · #2271B3

Valspar

Simply Purple 4004-10B

ΔE 34.1 · #7D83BD

Colorhouse

Petal .05 Petal-05

ΔE 34.7 · #1F4992

Kilz

Genie RB120-01

ΔE 38.5 · #6877AA

Sherwin-Williams

Gentian SW6817

ΔE 38.7 · #6572A5

Farrow & Ball

Cook's Blue 237

ΔE 48.2 · #6A90B4

Light Reflectance & Undertone

Light Reflectance Value (LRV)

28/100

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

#6688FF

#FFDE66

Analogous

#66D4FF

#6688FF

#9166FF

Triadic

#6688FF

#FF6687

#87FF66

Split-Complementary

#6688FF

#FF9166

#D4FF66

Tetradic

#6688FF

#FF66D4

#FFDE66

#66FF91

Monochromatic

#002CCC

#1A4BFF

#6688FF

#B3C3FF

#E5EBFF

Rectangle

#6688FF

#DE66FF

#FFDE66

#87FF66

Compound

#6688FF

#9166FF

#FFDE66

#D4FF66

Variations

Lighter

#859FFF

#AABBF8

#D1DAF7

Darker

#1F4FFF

#002BC4

#001972

Saturation

#9CA5C9

#6687FF

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

3.22:1

AA Large

vs Black

6.53:1

Deuteranopia

#6688FF

#528FFF

Original → Simulated

Protanopia

#6688FF

#8383F4

Original → Simulated

Tritanopia

#6688FF

#4EA391

Original → Simulated

Color Psychology

Focused · Cooling

Deep Denim 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

#8C93DA

Warm Bulb 2700K

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

#6688FF

Daylight 5500K

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

#7998FF

Cool Bulb 6500K

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

Pairs With

#E7E9EE

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.

#EAC745

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: #6688FF;

CSS — background

background-color: #6688FF;

CSS Variable

--color-deep-denim: #6688FF;

Tailwind v3 — config

colors: { 'deep-denim': '#6688FF' }

Tailwind — arbitrary

bg-[#6688FF] text-[#6688FF]

SCSS

$deep-denim: #6688FF;

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#0066B1 · ΔE 30.4

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#7F84BE · ΔE 34.1

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#5C79B3 · ΔE 34.9

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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 #6688FF?

#6688FF is Deep Denim, a soft blue with a cool undertone.

Is #6688FF warm or cool?

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

What rooms work best with Deep Denim?

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

What colors pair well with Deep Denim?

Deep Denim 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 Deep Denim?

You can download Deep Denim 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 Deep Denim?

The hex code is #6688FF. In RGB it's 102, 136, 255, and in HSL it's 227°, 100%, 70%.

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