BLUES

Sudden Sapphire

#6376A9

RGB 99, 118, 169 · HSL 224°, 29%, 53% · CMYK 41, 30, 0, 34

Sudden Sapphire is #6376A9 in HEX — rgb(99, 118, 169), hsl(224°, 29%, 53%), cmyk(41%, 30%, 0%, 34%).

Sudden Sapphire pulls into the mid-tone end of the blues spectrum — HSL 224°, 29%, 53%. 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#6376A9

RGB99, 118, 169

HSL224°, 29%, 53%

HSV224°, 41%, 66%

CMYK41, 30, 0, 34

Decimal6518441

CSS RGBrgb(99, 118, 169)

CSS HSLhsl(224, 29%, 53%)

Paint Matches — this color across 16 brands

Behr

Vintage 630F-5

ΔE 0.3 · #6476A9

Kilz

Genie RB120-01

ΔE 1.4 · #6877AA

Dulux

Dormitory S41G6

ΔE 1.8 · #5D74A9

Sherwin-Williams

Gentian SW6817

ΔE 2.2 · #6572A5

PPG

King's Robe 1245-6

ΔE 2.6 · #6274AB

Vista Paint

Harbor Blue K-105

ΔE 3.7 · #5B79AA

Hallman-Lindsay

Regal Azure 1277

ΔE 4.4 · #6A76AF

Benjamin Moore

Waterdrop CC-902

ΔE 4.7 · #5D7AB4

Valspar

Dazzle 4005-10C

ΔE 6.7 · #556DA9

IKEA

IKEA128 128

ΔE 8.2 · #4A72B0

Dunn-Edwards

Bodega Bay DE5893

ΔE 8.7 · #5E81C1

RAL

Distant Blue 5023

ΔE 10.9 · #49678D

Farrow & Ball

Pitch Blue 220

ΔE 10.9 · #636E8F

Kobra

Violet 25

ΔE 13.4 · #776BAB

Dutch Boy

Blue Sea VS-9451

ΔE 18.6 · #2D61AD

Colorhouse

Petal .05 Petal-05

ΔE 24.3 · #1F4992

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

#6376A9

#AA9764

Analogous

#649AAA

#6376A9

#7564AA

Triadic

#6376A9

#AA6477

#77AA64

Split-Complementary

#6376A9

#AA7564

#9AAA64

Tetradic

#6376A9

#AA649A

#AA9764

#64AA75

Monochromatic

#2A334C

#45547D

#6376A9

#96A2C5

#C7CEE0

Rectangle

#6376A9

#9764AA

#AA9764

#77AA64

Compound

#6376A9

#7564AA

#AA9764

#9AAA64

Variations

Lighter

#8392BB

#A5AFC9

#CDD1DE

Darker

#4B5D8D

#333F62

#1D253A

Saturation

#7D8292

#6477AA

#3A63D4

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

4.47:1

AA Large

vs Black

4.69:1

Deuteranopia

#6376A9

#6376AA

Original → Simulated

Protanopia

#6376A9

#7373A3

Original → Simulated

Tritanopia

#6376A9

#5D8079

Original → Simulated

Color Psychology

Focused · Cooling

Sudden Sapphire 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

#8A859A

Warm Bulb 2700K

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

#6376A9

Daylight 5500K

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

#778ABE

Cool Bulb 6500K

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

Pairs With

#EAEAEC

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.

#908056

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: #6376A9;

CSS — background

background-color: #6376A9;

CSS Variable

--color-sudden-sapphire: #6376A9;

Tailwind v3 — config

colors: { 'sudden-sapphire': '#6376A9' }

Tailwind — arbitrary

bg-[#6376A9] text-[#6376A9]

SCSS

$sudden-sapphire: #6376A9;

Similar Colors

Waterdrop

#5C79B3 · ΔE 4.6

Watertown

#5B7EB7 · ΔE 5.6

Softened Violet

#8085B4 · ΔE 8.3

Nile Blue

#4E719A · ΔE 8.6

Fancy Pants

#53618F · ΔE 8.6

California Lilac

#7F84BE · ΔE 8.8

Blue Nova

#5B6D92 · ΔE 8.9

Athens Blue

#3D74AC · ΔE 9.2

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 #6376A9?

#6376A9 is Sudden Sapphire, a mid-tone blue with a cool undertone.

Is #6376A9 warm or cool?

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

What rooms work best with Sudden Sapphire?

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

What colors pair well with Sudden Sapphire?

Sudden Sapphire 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 Sudden Sapphire?

You can download Sudden Sapphire 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 Sudden Sapphire?

The hex code is #6376A9. In RGB it's 99, 118, 169, and in HSL it's 224°, 29%, 53%.

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