PURPLES

Royal Decree

#403547

RGB 64, 53, 71 · HSL 277°, 15%, 24% · CMYK 10, 25, 0, 72

Royal Decree is #403547 in HEX — rgb(64, 53, 71), hsl(277°, 15%, 24%), cmyk(10%, 25%, 0%, 72%).

Royal Decree pulls into the deep end of the purples spectrum — HSL 277°, 15%, 24%. The neutral saturation makes it near-neutral and forgiving, and the hue reads cool. In interior projects it shines on accent walls, dressing rooms, creative studios — for character without shouting. Reads best alongside warm whites, walnut, brass, deep velvet textiles.

Color Codes

HEX#403547

RGB64, 53, 71

HSL277°, 15%, 24%

HSV277°, 25%, 28%

CMYK10, 25, 0, 72

Decimal4207943

CSS RGBrgb(64, 53, 71)

CSS HSLhsl(277, 15%, 24%)

Paint Matches — this color across 16 brands

Behr

Deep Aubergine 100F-7

ΔE 2.1 · #46384A

Dulux

Purple Witch S49B9

ΔE 2.7 · #47374A

Hallman-Lindsay

Plum Island historic-plum-island

ΔE 3.1 · #463C4E

Benjamin Moore

Plum 2070-20

ΔE 3.7 · #463D51

Dunn-Edwards

Preserve DEA193

ΔE 3.8 · #4A3C50

Vista Paint

Midnight Affair K-8

ΔE 4.1 · #483D4C

IKEA

IKEA163 163

ΔE 5.1 · #423A45

Kilz

Eggplant RA110-02

ΔE 5.7 · #503C50

PPG

Blackberry 1172-7 · 13-21

ΔE 6.1 · #4A4354

Valspar

Twilight Purple 4010-2

ΔE 6.1 · #3E3B46

Farrow & Ball

Pelt 254

ΔE 7.5 · #50414C

Sherwin-Williams

Black Swan SW6279

ΔE 8.1 · #3A373E

RAL

Violet Blue 5000

ΔE 10.3 · #2A2E4B

Kobra

Blue 31

ΔE 10.5 · #334059

Colorhouse

Create .06 Create-06

ΔE 12.8 · #5E3D5A

Dutch Boy

Dark Chocolate D-6782

ΔE 15.1 · #392A27

Light Reflectance & Undertone

Light Reflectance Value (LRV)

4/100

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

TemperatureNeutral MasstoneViolet UndertoneBlue

Reads as a neutral violet with a blue undertone showing through, especially in daylight. Pair trim and adjacent colours to either calm or amplify that undertone.

Color Theory

Complementary

#403547

#3B4634

Analogous

#363446

#403547

#463444

Triadic

#403547

#463F34

#34463F

Split-Complementary

#403547

#444634

#344636

Tetradic

#403547

#463634

#3B4634

#344446

Monochromatic

#0D0B0F

#18141A

#403547

#675572

#8E789B

Rectangle

#403547

#46343B

#3B4634

#34463F

Compound

#403547

#463444

#3B4634

#344636

Variations

Lighter

#675573

#8E7C9A

#BDB4C2

Darker

#332939

#231C27

#141017

Saturation

#3E3A40

#3F3446

#451A60

Interior Use

Best Rooms

dressing rooms, creative studios, accent walls

Best Uses

feature walls, cabinetry, textiles

Pairs With

warm whites, walnut, brass, deep velvet textiles

Accessibility (WCAG)

vs White

11.55:1

AAA

vs Black

1.82:1

Fail

Deuteranopia

#403547

#373B47

Original → Simulated

Protanopia

#403547

#373745

Original → Simulated

Tritanopia

#403547

#3E3937

Original → Simulated

Color Psychology

Sophisticated · Imaginative

Royal Decree carries history — long associated with luxury and contemplation. It works in low-light, intimate rooms (dressing rooms, dens, accent walls) where its complexity gets time to unfold. Pair with brass and walnut.

SymbolismLuxury, intuition, creativity

PersonalityRefined, mysterious, artistic

luxurycreativeintuitionintimateaccentrefined

How it looks under different light

#6F5450

Warm Bulb 2700K

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

#403547

Daylight 5500K

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

#5D5975

Cool Bulb 6500K

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

Pairs With

#EBEAEB

Trim

Matched off-white

Same hue at 92% lightness — trim reads coordinated, not stark.

#F7F7F7

Ceiling

Whisper tint

Near-white with a hint of the hero's undertone — ceiling feels intentional.

#314127

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 / Aura Interior (for richer color depth in deep tones)

Recommended Finishes

Matte (walls) · Pearl (trim) · Satin (doors)

Deep colors look best in matte — gloss exaggerates surface flaws. Reserve subtle sheen for trim, doors, and high-touch areas.

Best Surfaces

Accent walls · Doors · Cabinetry · Built-ins

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

Tinted primer in a similar value is highly recommended — saves a coat and prevents the wall colour from washing the surface.

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: #403547;

CSS — background

background-color: #403547;

CSS Variable

--color-royal-decree: #403547;

Tailwind v3 — config

colors: { 'royal-decree': '#403547' }

Tailwind — arbitrary

bg-[#403547] text-[#403547]

SCSS

$royal-decree: #403547;

Similar Colors

Plum Royale

#453C50 · ΔE 3.3

Deep Mulberry

#3C3845 · ΔE 4.6

Black Raspberry

#4D3D4B · ΔE 5.3

Peerage

#4F3B50 · ΔE 5.6

Exotic Purple

#43334D · ΔE 5.6

Majestic Violet

#3A3450 · ΔE 6.9

Dark Purple

#4B3540 · ΔE 7.1

Blackberry Punch

#3F4150 · ΔE 7.2

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 #403547?

#403547 is Royal Decree, a deep purple with a cool undertone.

Is #403547 warm or cool?

Royal Decree reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Royal Decree?

Royal Decree works well in dressing rooms, creative studios, accent walls. Designers typically use it for feature walls, cabinetry, textiles.

What colors pair well with Royal Decree?

Royal Decree pairs naturally with warm whites, walnut, brass, deep velvet textiles. Its complementary color is also a strong contrast option for accents.

Where can I download Royal Decree?

You can download Royal Decree 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 Royal Decree?

The hex code is #403547. In RGB it's 64, 53, 71, and in HSL it's 277°, 15%, 24%.

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