BLUES

Flickering Sea

#5566EE

RGB 85, 102, 238 · HSL 233°, 82%, 63% · CMYK 64, 57, 0, 7

Flickering Sea is #5566EE in HEX — rgb(85, 102, 238), hsl(233°, 82%, 63%), cmyk(64%, 57%, 0%, 7%).

Flickering Sea pulls into the light end of the blues spectrum — HSL 233°, 82%, 63%. 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#5566EE

RGB85, 102, 238

HSL233°, 82%, 63%

HSV233°, 64%, 93%

CMYK64, 57, 0, 7

Decimal5596910

CSS RGBrgb(85, 102, 238)

CSS HSLhsl(233, 82%, 63%)

Paint Matches — this color across 16 brands

Behr

Wild Pansy P540-6

ΔE 5.3 · #5171FF

Dutch Boy

Blue Royale VS-9550

ΔE 34 · #243F90

PPG

Blue Calico 1246-7

ΔE 38.3 · #5868AE

Colorhouse

Petal .05 Petal-05

ΔE 38.4 · #1F4992

Dunn-Edwards

Bellflower DE5908

ΔE 39 · #5D66AA

Vista Paint

Medieval C-1262

ΔE 39 · #686AAE

Hallman-Lindsay

Medieval 1263

ΔE 39.7 · #696DB0

Benjamin Moore

Big 2066-30

ΔE 39.9 · #0167B2

Kobra

Violet 25

ΔE 41.3 · #776BAB

Dulux

Purple Silk SB8G5

ΔE 42.1 · #66619F

Valspar

Twinkle Night 4004-8C

ΔE 43.9 · #5A65A1

IKEA

IKEA128 128

ΔE 45.2 · #4A72B0

RAL

Signal Blue 5005

ΔE 45.2 · #1E2D6E

Kilz

Mystical Purple RH260

ΔE 48.8 · #796A9D

Sherwin-Williams

African Violet SW6982

ΔE 49.4 · #665385

Farrow & Ball

Pitch Blue 220

ΔE 60.2 · #636E8F

Light Reflectance & Undertone

Light Reflectance Value (LRV)

18/100

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

#5566EE

#EEDC53

Analogous

#53B3EE

#5566EE

#8F53EE

Triadic

#5566EE

#EE5365

#65EE53

Split-Complementary

#5566EE

#EE8F53

#B3EE53

Tetradic

#5566EE

#EE53B3

#EEDC53

#53EE8F

Monochromatic

#0F1F99

#162DDF

#5566EE

#99A4F5

#DFE2FC

Rectangle

#5566EE

#DC53EE

#EEDC53

#65EE53

Compound

#5566EE

#8F53EE

#EEDC53

#B3EE53

Variations

Lighter

#7684F1

#9FA8EE

#CBCFF1

Darker

#142DED

#091BA8

#030E64

Saturation

#898FB8

#5365EE

#4B5FF7

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

4.64:1

vs Black

4.52:1

Deuteranopia

#5566EE

#1377EE

Original → Simulated

Protanopia

#5566EE

#6363E2

Original → Simulated

Tritanopia

#5566EE

#348874

Original → Simulated

Color Psychology

Focused · Cooling

Flickering 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

#7F79CE

Warm Bulb 2700K

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

#5566EE

Daylight 5500K

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

#6C7EF2

Cool Bulb 6500K

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

Pairs With

#E8E8EE

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.

#DBC836

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: #5566EE;

CSS — background

background-color: #5566EE;

CSS Variable

--color-flickering-sea: #5566EE;

Tailwind v3 — config

colors: { 'flickering-sea': '#5566EE' }

Tailwind — arbitrary

bg-[#5566EE] text-[#5566EE]

SCSS

$flickering-sea: #5566EE;

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#0066B1 · ΔE 39.8

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#365496 · ΔE 41.5

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#004E93 · ΔE 41.9

Warriors Blue

#00498D · ΔE 42.5

Scandinavian Blue

#4E4E8C · ΔE 42.6

Mosaic

#3862A3 · ΔE 42.9

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#0063A6 · ΔE 44.5

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#304C89 · ΔE 44.8

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 #5566EE?

#5566EE is Flickering Sea, a soft blue with a cool undertone.

Is #5566EE warm or cool?

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

What rooms work best with Flickering Sea?

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

What colors pair well with Flickering Sea?

Flickering 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 Flickering Sea?

You can download Flickering 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 Flickering Sea?

The hex code is #5566EE. In RGB it's 85, 102, 238, and in HSL it's 233°, 82%, 63%.

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