BLUES

Sanctuary Spa

#66B2E4

RGB 102, 178, 228 · HSL 204°, 70%, 65% · CMYK 55, 22, 0, 11

Sanctuary Spa is #66B2E4 in HEX — rgb(102, 178, 228), hsl(204°, 70%, 65%), cmyk(55%, 22%, 0%, 11%).

Sanctuary Spa pulls into the light end of the blues spectrum — HSL 204°, 70%, 65%. 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#66B2E4

RGB102, 178, 228

HSL204°, 70%, 65%

HSV204°, 55%, 89%

CMYK55, 22, 0, 11

Decimal6730468

CSS RGBrgb(102, 178, 228)

CSS HSLhsl(204, 70%, 65%)

Paint Matches — this color across 16 brands

Dunn-Edwards

Sanctuary Spa DE5843

Exact match

Benjamin Moore

True 2066-50

ΔE 3.5 · #6DBBEB

Hallman-Lindsay

Robin's Egg historic-robins-egg

ΔE 3.5 · #64B0DC

PPG

Xavier Blue 1240-4

ΔE 3.5 · #6AB4E0

Vista Paint

Robin's Egg C-1370

ΔE 3.7 · #67ADD9

Dulux

High Blue S35H3 · SB8D5

ΔE 4.6 · #4CADDF

Behr

Washed Denim M530-4

ΔE 4.9 · #7BB2E2

Valspar

Skyscape 4007-10A

ΔE 5.2 · #70ADD7

Kilz

Azure Pool RD240-01

ΔE 6.2 · #67B0D7

Farrow & Ball

St Giles Blue 280

ΔE 9.8 · #599EC4

Sherwin-Williams

Flyway SW6794

ΔE 10.5 · #5DB3D4

Kobra

Blue 28

ΔE 15.9 · #4EB3CD

IKEA

IKEA085 85

ΔE 16 · #9FC1DF

Dutch Boy

Sky Blue D-6742

ΔE 16.7 · #7AC2D8

RAL

Light Blue 5012

ΔE 18.5 · #3B83BD

Colorhouse

Dream .03 Dream-03

ΔE 25.5 · #B4CBD9

Light Reflectance & Undertone

Light Reflectance Value (LRV)

40/100

Medium

0 · DarkLight · 100

Balanced reflectance — holds colour without washing out. Versatile for most rooms and the most forgiving range for true-to-chip results.

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

#66B2E4

#E49967

Analogous

#67E4D8

#66B2E4

#6774E4

Triadic

#66B2E4

#E467B2

#B2E467

Split-Complementary

#66B2E4

#E46774

#E4D867

Tetradic

#66B2E4

#D867E4

#E49967

#74E467

Monochromatic

#1B6698

#2691D9

#66B2E4

#A8D3F0

#E9F4FB

Rectangle

#66B2E4

#9967E4

#E49967

#B2E467

Compound

#66B2E4

#6774E4

#E49967

#E4D867

Variations

Lighter

#86C2EA

#AAD0E9

#D0E3EF

Darker

#2B97DF

#1569A1

#0A3E60

Saturation

#93A9B8

#67B2E4

#5AB5F2

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

2.32:1

Fail

vs Black

9.05:1

AAA

Deuteranopia

#66B2E4

#8CA4E5

Original → Simulated

Protanopia

#66B2E4

#A8A8DE

Original → Simulated

Tritanopia

#66B2E4

#60BAB2

Original → Simulated

Color Psychology

Focused · Cooling

Sanctuary Spa 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

#8CB2C6

Warm Bulb 2700K

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

#66B2E4

Daylight 5500K

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

#79B7EA

Cool Bulb 6500K

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

Pairs With

#E8EBED

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.

#D17F49

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: #66B2E4;

CSS — background

background-color: #66B2E4;

CSS Variable

--color-sanctuary-spa: #66B2E4;

Tailwind v3 — config

colors: { 'sanctuary-spa': '#66B2E4' }

Tailwind — arbitrary

bg-[#66B2E4] text-[#66B2E4]

SCSS

$sanctuary-spa: #66B2E4;

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#6CBAEA · ΔE 3.2

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#6DB4DC · ΔE 5.6

Costa Rica Blue

#74BAE3 · ΔE 5.9

Nova Scotia Blue

#6BA3D0 · ΔE 6.9

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#5EABD1 · ΔE 7.4

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#3F9DD1 · ΔE 8.7

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#7BBDE1 · ΔE 8.9

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 #66B2E4?

#66B2E4 is Sanctuary Spa, a soft blue with a cool undertone.

Is #66B2E4 warm or cool?

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

What rooms work best with Sanctuary Spa?

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

What colors pair well with Sanctuary Spa?

Sanctuary Spa 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 Sanctuary Spa?

You can download Sanctuary Spa 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 Sanctuary Spa?

The hex code is #66B2E4. In RGB it's 102, 178, 228, and in HSL it's 204°, 70%, 65%.

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