BLUES

Dark Periwinkle

#665FD1

RGB 102, 95, 209 · HSL 244°, 55%, 60% · CMYK 51, 55, 0, 18

Dark Periwinkle is #665FD1 in HEX — rgb(102, 95, 209), hsl(244°, 55%, 60%), cmyk(51%, 55%, 0%, 18%).

Dark Periwinkle pulls into the light end of the blues spectrum — HSL 244°, 55%, 60%. 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#665FD1

RGB102, 95, 209

HSL244°, 55%, 60%

HSV244°, 55%, 82%

CMYK51, 55, 0, 18

Decimal6709201

CSS RGBrgb(102, 95, 209)

CSS HSLhsl(244, 55%, 60%)

Paint Matches — this color across 16 brands

Behr

Grape Parfait 640B-6

ΔE 6.9 · #786FE7

Dutch Boy

Blue Royale VS-9550

ΔE 24.4 · #243F90

PPG

Blue Calico 1246-7

ΔE 27.3 · #5868AE

Vista Paint

Medieval C-1262

ΔE 27.5 · #686AAE

Dunn-Edwards

Bellflower DE5908

ΔE 27.7 · #5D66AA

Hallman-Lindsay

Medieval 1263

ΔE 28.4 · #696DB0

Colorhouse

Petal .05 Petal-05

ΔE 28.5 · #1F4992

Kobra

Violet 25

ΔE 29.3 · #776BAB

Dulux

Purple Eden SB8G3

ΔE 29.9 · #745F9D

Benjamin Moore

Scandinavian 2068-30

ΔE 30.7 · #4F4F8D

Valspar

Twinkle Night 4004-8C

ΔE 32.5 · #5A65A1

RAL

Signal Blue 5005

ΔE 35 · #1E2D6E

IKEA

IKEA128 128

ΔE 35.4 · #4A72B0

Kilz

Superstition RH250

ΔE 36.7 · #604C7F

Sherwin-Williams

African Violet SW6982

ΔE 36.9 · #665385

Farrow & Ball

Pitch Blue 220

ΔE 48.8 · #636E8F

Light Reflectance & Undertone

Light Reflectance Value (LRV)

16/100

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

#665FD1

#CAD161

Analogous

#6192D1

#665FD1

#A061D1

Triadic

#665FD1

#D16861

#61D168

Split-Complementary

#665FD1

#D1A061

#92D161

Tetradic

#665FD1

#D16192

#CAD161

#61D1A0

Monochromatic

#282277

#3C34B2

#665FD1

#A19CE2

#D9D7F4

Rectangle

#665FD1

#D161CA

#CAD161

#61D168

Compound

#665FD1

#A061D1

#CAD161

#92D161

Variations

Lighter

#8781DA

#A9A5DE

#CFCEE9

Darker

#3D34C1

#282187

#161250

Saturation

#8A88AA

#6861D1

#544AE8

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

5.09:1

vs Black

4.12:1

AA Large

Deuteranopia

#665FD1

#3B72D1

Original → Simulated

Protanopia

#665FD1

#6060C7

Original → Simulated

Tritanopia

#665FD1

#557B6B

Original → Simulated

Color Psychology

Focused · Cooling

Dark Periwinkle 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

#8C74B8

Warm Bulb 2700K

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

#665FD1

Daylight 5500K

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

#7979DC

Cool Bulb 6500K

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

Pairs With

#E9E9ED

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.

#B5BC48

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: #665FD1;

CSS — background

background-color: #665FD1;

CSS Variable

--color-dark-periwinkle: #665FD1;

Tailwind v3 — config

colors: { 'dark-periwinkle': '#665FD1' }

Tailwind — arbitrary

bg-[#665FD1] text-[#665FD1]

SCSS

$dark-periwinkle: #665FD1;

Similar Colors

Scandinavian Blue

#4E4E8C · ΔE 30.8

Twilight Blue

#365496 · ΔE 30.9

Big Country Blue

#0066B1 · ΔE 31.6

Mystical Grape

#664B86 · ΔE 32.2

Evening Blue

#004E93 · ΔE 32.5

Mosaic

#3862A3 · ΔE 32.9

Warriors Blue

#00498D · ΔE 33.0

Delphinium

#304C89 · ΔE 34.1

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 #665FD1?

#665FD1 is Dark Periwinkle, a soft blue with a cool undertone.

Is #665FD1 warm or cool?

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

What rooms work best with Dark Periwinkle?

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

What colors pair well with Dark Periwinkle?

Dark Periwinkle 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 Dark Periwinkle?

You can download Dark Periwinkle 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 Dark Periwinkle?

The hex code is #665FD1. In RGB it's 102, 95, 209, and in HSL it's 244°, 55%, 60%.

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