BLUES

Underground Stream

#120A65

RGB 18, 10, 101 · HSL 245°, 82%, 22% · CMYK 82, 90, 0, 60

Underground Stream is #120A65 in HEX — rgb(18, 10, 101), hsl(245°, 82%, 22%), cmyk(82%, 90%, 0%, 60%).

Underground Stream pulls into the deep end of the blues spectrum — HSL 245°, 82%, 22%. 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#120A65

RGB18, 10, 101

HSL245°, 82%, 22%

HSV245°, 90%, 40%

CMYK82, 90, 0, 60

Decimal1182309

CSS RGBrgb(18, 10, 101)

CSS HSLhsl(245, 82%, 22%)

Paint Matches — this color across 16 brands

Behr

Proper Purple P570-7

ΔE 15.4 · #3B2F8C

RAL

Signal Blue 5005

ΔE 22.8 · #1E2D6E

Dutch Boy

Blue Royale VS-9550

ΔE 24.2 · #243F90

Vista Paint

Hot Sauna C-1270

ΔE 29.2 · #3C3973

Benjamin Moore

Blue 2066-10

ΔE 30.6 · #243973

Colorhouse

Petal .05 Petal-05

ΔE 31.3 · #1F4992

Hallman-Lindsay

Frozen Blue 606

ΔE 32.6 · #354079

Dulux

Brilliant Purple SB8G8

ΔE 33.6 · #4D4985

Dunn-Edwards

Fresh Eggplant DE5944

ΔE 34.2 · #4F467E

PPG

Crushed Velvet 1245-7

ΔE 35.1 · #445397

Valspar

Sumptuous Purple 4010-10

ΔE 37.9 · #564371

Kilz

Superstition RH250

ΔE 38.4 · #604C7F

Sherwin-Williams

Valiant Violet SW6818

ΔE 38.4 · #3E4371

Kobra

Violet 26

ΔE 42.5 · #7B598F

IKEA

IKEA128 128

ΔE 49.4 · #4A72B0

Farrow & Ball

Pelt 254

ΔE 56.3 · #50414C

Light Reflectance & Undertone

Light Reflectance Value (LRV)

1/100

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

#120A65

#5E660A

Analogous

#0A3066

#120A65

#400A66

Triadic

#120A65

#66120A

#0A6612

Split-Complementary

#120A65

#66400A

#30660A

Tetradic

#120A65

#660A30

#5E660A

#0A6640

Monochromatic

#040217

#060320

#120A65

#1E11AC

#3120E9

Rectangle

#120A65

#660A5E

#5E660A

#0A6612

Compound

#120A65

#400A66

#5E660A

#30660A

Variations

Lighter

#1E11AF

#4234DB

#9891E1

Darker

#0D0654

#08033B

#040123

Saturation

#2D2A46

#120A66

#0E056B

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

16.71:1

AAA

vs Black

1.26:1

Fail

Deuteranopia

#120A65

#002165

Original → Simulated

Protanopia

#120A65

#0C0C5F

Original → Simulated

Tritanopia

#120A65

#002A1B

Original → Simulated

Color Psychology

Focused · Cooling

Underground Stream 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

#4D3467

Warm Bulb 2700K

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

#120A65

Daylight 5500K

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

#3A398B

Cool Bulb 6500K

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

Pairs With

#E8E8EE

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.

#4B510E

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: #120A65;

CSS — background

background-color: #120A65;

CSS Variable

--color-underground-stream: #120A65;

Tailwind v3 — config

colors: { 'underground-stream': '#120A65' }

Tailwind — arbitrary

bg-[#120A65] text-[#120A65]

SCSS

$underground-stream: #120A65;

Similar Colors

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#233872 · ΔE 30.3

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#334076 · ΔE 34.1

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#3F457D · ΔE 34.3

Warriors Blue

#00498D · ΔE 34.3

Scandinavian Blue

#4E4E8C · ΔE 34.7

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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 #120A65?

#120A65 is Underground Stream, a deep blue with a cool undertone.

Is #120A65 warm or cool?

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

What rooms work best with Underground Stream?

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

What colors pair well with Underground Stream?

Underground Stream 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 Underground Stream?

You can download Underground Stream 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 Underground Stream?

The hex code is #120A65. In RGB it's 18, 10, 101, and in HSL it's 245°, 82%, 22%.

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