BLUES

Idol

#645A8B

RGB 100, 90, 139 · HSL 252°, 21%, 45% · CMYK 28, 35, 0, 45

Idol is #645A8B in HEX — rgb(100, 90, 139), hsl(252°, 21%, 45%), cmyk(28%, 35%, 0%, 45%).

Idol pulls into the mid-tone end of the blues spectrum — HSL 252°, 21%, 45%. 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#645A8B

RGB100, 90, 139

HSL252°, 21%, 45%

HSV252°, 35%, 55%

CMYK28, 35, 0, 45

Decimal6576779

CSS RGBrgb(100, 90, 139)

CSS HSLhsl(252, 21%, 45%)

Paint Matches — this color across 16 brands

Dulux

Idol S43F7

ΔE 0.7 · #625A8B

Benjamin Moore

Mauve 1407

ΔE 2.4 · #5F5485

Behr

Purple Sky MQ4-28

ΔE 3.6 · #625581

Sherwin-Williams

African Violet SW6982

ΔE 4 · #665385

Dunn-Edwards

Concord Jam DE5964

ΔE 5.6 · #695A82

Valspar

Purple Royalty 4009-10

ΔE 5.9 · #725889

Kilz

Super Violet RH270

ΔE 6.2 · #6F5782

PPG

Reign Over Me 1248-7

ΔE 6.8 · #76679E

Vista Paint

Purple Spire C-1248

ΔE 7.3 · #706C9B

Hallman-Lindsay

Altar Of Heaven 1264

ΔE 7.4 · #4D4C80

Kobra

Violet 26

ΔE 9.4 · #7B598F

RAL

Pearl Violet 4011

ΔE 11.4 · #8673A1

Farrow & Ball

Pitch Blue 220

ΔE 14.3 · #636E8F

IKEA

IKEA128 128

ΔE 17 · #4A72B0

Colorhouse

Create .06 Create-06

ΔE 18.2 · #5E3D5A

Dutch Boy

Blue Sea VS-9451

ΔE 20.8 · #2D61AD

Light Reflectance & Undertone

Light Reflectance Value (LRV)

12/100

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

#645A8B

#818B5B

Analogous

#5B698B

#645A8B

#7C5B8B

Triadic

#645A8B

#8B645B

#5B8B64

Split-Complementary

#645A8B

#8B7C5B

#698B5B

Tetradic

#645A8B

#8B5B69

#818B5B

#5B8B7C

Monochromatic

#211E2E

#433C5D

#645A8B

#8C84AE

#B7B2CD

Rectangle

#645A8B

#8B5B81

#818B5B

#5B8B64

Compound

#645A8B

#7C5B8B

#818B5B

#698B5B

Variations

Lighter

#8177A6

#A29CBA

#CAC7D5

Darker

#504870

#36314E

#1F1C2E

Saturation

#6E6C7A

#645B8B

#492DB8

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

6.22:1

vs Black

3.38:1

AA Large

Deuteranopia

#645A8B

#54638B

Original → Simulated

Protanopia

#645A8B

#5C5C86

Original → Simulated

Tritanopia

#645A8B

#5F645E

Original → Simulated

Color Psychology

Focused · Cooling

Idol 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

#8A7083

Warm Bulb 2700K

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

#645A8B

Daylight 5500K

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

#7875A8

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.

#707A49

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: #645A8B;

CSS — background

background-color: #645A8B;

CSS Variable

--color-idol: #645A8B;

Tailwind v3 — config

colors: { 'idol': '#645A8B' }

Tailwind — arbitrary

bg-[#645A8B] text-[#645A8B]

SCSS

$idol: #645A8B;

Similar Colors

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#5E5384 · ΔE 2.8

Seduction

#6C598D · ΔE 3.7

Your Majesty

#635083 · ΔE 4.9

Bistro Blue

#53588A · ΔE 5.4

Fancy Pants

#53618F · ΔE 8.5

Darkest Grape

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Mystical Grape

#664B86 · ΔE 10.0

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 #645A8B?

#645A8B is Idol, a mid-tone blue with a cool undertone.

Is #645A8B warm or cool?

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

What rooms work best with Idol?

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

What colors pair well with Idol?

Idol 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 Idol?

You can download Idol 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 Idol?

The hex code is #645A8B. In RGB it's 100, 90, 139, and in HSL it's 252°, 21%, 45%.

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