BLUES

Blue Wonder

#404664

RGB 64, 70, 100 · HSL 230°, 22%, 32% · CMYK 36, 30, 0, 61

Blue Wonder is #404664 in HEX — rgb(64, 70, 100), hsl(230°, 22%, 32%), cmyk(36%, 30%, 0%, 61%).

Blue Wonder pulls into the rich end of the blues spectrum — HSL 230°, 22%, 32%. 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#404664

RGB64, 70, 100

HSL230°, 22%, 32%

HSV230°, 36%, 39%

CMYK36, 30, 0, 61

Decimal4212324

CSS RGBrgb(64, 70, 100)

CSS HSLhsl(230, 22%, 32%)

Paint Matches — this color across 16 brands

Dulux

Genie S42D8

ΔE 1.1 · #3E4463

Behr

Nobility Blue PPU15-1

ΔE 2.2 · #41496A

PPG

Royal Hyacinth 1169-7

ΔE 2.3 · #464B6A

Vista Paint

Royal Wave K-1242

ΔE 2.9 · #38405D

Kilz

Blue Galaxy RB100-02

ΔE 3.9 · #41445C

Benjamin Moore

Blackberry 2069-20

ΔE 4.3 · #49455F

Sherwin-Williams

Dignified SW6538

ΔE 4.4 · #3B496D

Hallman-Lindsay

Quiet Peace 592

ΔE 4.7 · #3A4A64

Dunn-Edwards

Magic Night DEA191

ΔE 5.1 · #3A3B5B

Kobra

Blue 31

ΔE 5.3 · #334059

Valspar

Enchanted Navy 4010-8

ΔE 5.9 · #485375

IKEA

IKEA122 122

ΔE 6.6 · #3A5170

Dutch Boy

Royal Blue D-6740

ΔE 10.3 · #1D375C

RAL

Violet Blue 5000

ΔE 10.6 · #2A2E4B

Farrow & Ball

Stiffkey Blue 281

ΔE 13.2 · #4D5B6A

Colorhouse

Wool .06 Wool-06

ΔE 15 · #485761

Light Reflectance & Undertone

Light Reflectance Value (LRV)

6/100

Very Dark

0 · DarkLight · 100

Absorbs almost all light — dramatic and cocooning. Needs strong artificial lighting and works best as an accent or in well-lit rooms.

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

#404664

#645E40

Analogous

#405864

#404664

#4C4064

Triadic

#404664

#644046

#466440

Split-Complementary

#404664

#644C40

#586440

Tetradic

#404664

#644058

#645E40

#40644C

Monochromatic

#0A0B10

#222535

#404664

#5D6692

#8990B3

Rectangle

#404664

#5E4064

#645E40

#466440

Compound

#404664

#4C4064

#645E40

#586440

Variations

Lighter

#5B638E

#848AAA

#B9BCCC

Darker

#323750

#222638

#141621

Saturation

#4C4E57

#404664

#203083

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

9.22:1

AAA

vs Black

2.28:1

Fail

Deuteranopia

#404664

#3D4764

Original → Simulated

Protanopia

#404664

#454561

Original → Simulated

Tritanopia

#404664

#3D4C48

Original → Simulated

Color Psychology

Focused · Cooling

Blue Wonder 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

#6F6166

Warm Bulb 2700K

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

#404664

Daylight 5500K

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

#5D668A

Cool Bulb 6500K

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

Pairs With

#EAEAEB

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.

#575134

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: #404664;

CSS — background

background-color: #404664;

CSS Variable

--color-blue-wonder: #404664;

Tailwind v3 — config

colors: { 'blue-wonder': '#404664' }

Tailwind — arbitrary

bg-[#404664] text-[#404664]

SCSS

$blue-wonder: #404664;

Similar Colors

Blackberry Wine

#48445E · ΔE 4.3

Jet Blue

#414A62 · ΔE 4.4

Wizard

#40466D · ΔE 5.8

Dark Lilac

#544D6D · ΔE 6.4

Downpour Blue

#254669 · ΔE 8.2

Indi Go-Go

#445772 · ΔE 8.2

Approaching Storm

#4B4A5C · ΔE 8.2

Majestic Violet

#3A3450 · 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 #404664?

#404664 is Blue Wonder, a deep blue with a cool undertone.

Is #404664 warm or cool?

Blue Wonder reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Blue Wonder?

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

What colors pair well with Blue Wonder?

Blue Wonder 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 Blue Wonder?

You can download Blue Wonder 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 Blue Wonder?

The hex code is #404664. In RGB it's 64, 70, 100, and in HSL it's 230°, 22%, 32%.

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