BLUES

Deep

#303A4C

RGB 48, 58, 76 · HSL 219°, 23%, 24% · CMYK 37, 24, 0, 70

Deep is #303A4C in HEX — rgb(48, 58, 76), hsl(219°, 23%, 24%), cmyk(37%, 24%, 0%, 70%).

Deep pulls into the deep end of the blues spectrum — HSL 219°, 23%, 24%. 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#303A4C

RGB48, 58, 76

HSL219°, 23%, 24%

HSV219°, 37%, 30%

CMYK37, 24, 0, 70

Decimal3160652

CSS RGBrgb(48, 58, 76)

CSS HSLhsl(219, 23%, 24%)

Paint Matches — this color across 16 brands

Benjamin Moore

Deep 2061-10

Exact match

Dunn-Edwards

Old Mill DEA185

ΔE 1.5 · #343B4E

Dulux

Dark Spell S39C9

ΔE 1.8 · #303C4C

Sherwin-Williams

In the Navy SW9178

ΔE 2.7 · #283849

Behr

Sorcerer 760F-7

ΔE 2.8 · #2B3645

Vista Paint

Star-Studded C-619

ΔE 5 · #313F58

Kobra

Blue 31

ΔE 5.2 · #334059

Hallman-Lindsay

Star-studded 620

ΔE 5.2 · #32425A

RAL

Ocean Blue 5020

ΔE 6.1 · #1D334A

PPG

Victory Blue 1165-7

ΔE 6.3 · #3A405A

Valspar

Blue Coal 4011-3

ΔE 6.7 · #414450

Kilz

Blue Galaxy RB100-02

ΔE 7 · #41445C

IKEA

IKEA163 163

ΔE 8.6 · #423A45

Farrow & Ball

Hague Blue 30

ΔE 10.6 · #3D4E57

Colorhouse

Nourish .06 Nourish-06

ΔE 11.6 · #313536

Dutch Boy

Royal Blue D-6740

ΔE 13.1 · #1D375C

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

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

#303A4C

#4B412F

Analogous

#2F474B

#303A4C

#332F4B

Triadic

#303A4C

#4B2F39

#394B2F

Split-Complementary

#303A4C

#4B332F

#474B2F

Tetradic

#303A4C

#4B2F47

#4B412F

#2F4B33

Monochromatic

#0A0C10

#12151C

#303A4C

#4D5D7A

#6F82A5

Rectangle

#303A4C

#412F4B

#4B412F

#394B2F

Compound

#303A4C

#332F4B

#4B412F

#474B2F

Variations

Lighter

#4D5D7B

#7484A1

#B0B8C6

Darker

#252D3D

#191F2A

#0E1219

Saturation

#393C41

#2F394B

#183263

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

11.44:1

AAA

vs Black

1.84:1

Fail

Deuteranopia

#303A4C

#32394C

Original → Simulated

Protanopia

#303A4C

#38384A

Original → Simulated

Tritanopia

#303A4C

#2E3D3B

Original → Simulated

Color Psychology

Focused · Cooling

Deep 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

#635854

Warm Bulb 2700K

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

#303A4C

Daylight 5500K

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

#515D78

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.

#413827

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: #303A4C;

CSS — background

background-color: #303A4C;

CSS Variable

--color-deep: #303A4C;

Tailwind v3 — config

colors: { 'deep': '#303A4C' }

Tailwind — arbitrary

bg-[#303A4C] text-[#303A4C]

SCSS

$deep: #303A4C;

Similar Colors

Deep Royal

#2F394B · ΔE 0.4

North Sea

#2B3B4C · ΔE 2.3

Old Navy

#2E3549 · ΔE 2.8

Blackberry Punch

#3F4150 · ΔE 5.1

Polo Blue

#323A43 · ΔE 6.0

Deep Mulberry

#3C3845 · ΔE 6.3

Washington Blue

#304656 · ΔE 6.4

Twilight

#254455 · ΔE 7.7

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 #303A4C?

#303A4C is Deep, a deep blue with a cool undertone.

Is #303A4C warm or cool?

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

What rooms work best with Deep?

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

What colors pair well with Deep?

Deep 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 Deep?

You can download Deep 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 Deep?

The hex code is #303A4C. In RGB it's 48, 58, 76, and in HSL it's 219°, 23%, 24%.

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