BLUES

Fibonacci Blue

#112358

RGB 17, 35, 88 · HSL 225°, 68%, 21% · CMYK 81, 60, 0, 65

Fibonacci Blue is #112358 in HEX — rgb(17, 35, 88), hsl(225°, 68%, 21%), cmyk(81%, 60%, 0%, 65%).

Fibonacci Blue pulls into the deep end of the blues spectrum — HSL 225°, 68%, 21%. The balanced saturation makes it confident without overpowering, 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#112358
RGB17, 35, 88
HSL225°, 68%, 21%
HSV225°, 81%, 35%
CMYK81, 60, 0, 65
Decimal1123160
CSS RGBrgb(17, 35, 88)
CSS HSLhsl(225, 68%, 21%)

Paint Matches — this color across 16 brands

RAL

Ultramarine Blue 5002

ΔE 5.6 · #20214F

Behr

Purple Blanket S-H-640

ΔE 6.7 · #2B2C66

Benjamin Moore

Blue 2066-10

ΔE 10.1 · #243973

Dulux

Kellands Pond NZ10F6

ΔE 10.4 · #1F3665

Vista Paint

Hot Sauna C-1270

ΔE 12.1 · #3C3973

Hallman-Lindsay

Newport Indigo historic-newport-indigo

ΔE 13.2 · #313D6C

Dunn-Edwards

Cobalt DEA140

ΔE 15 · #3C4378

Dutch Boy

Delft Blue 7447

ΔE 15.6 · #003B67

Sherwin-Williams

Valiant Violet SW6818

ΔE 16.2 · #3E4371

Kilz

Renaissance Tapestry RH240

ΔE 18.4 · #48436D

PPG

Daring Indigo 1166-7 · 13-25

ΔE 18.5 · #374874

Valspar

Spirit Blue 4011-9

ΔE 19 · #49456F

Colorhouse

Petal .05 Petal-05

ΔE 19.5 · #1F4992

Kobra

Blue 31

ΔE 24.2 · #334059

IKEA

IKEA122 122

ΔE 26.6 · #3A5170

Farrow & Ball

Pelt 254

ΔE 33.4 · #50414C

Light Reflectance & Undertone

Light Reflectance Value (LRV)

2/100

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

#112358
#5A4811

Analogous

#11485A
#112358
#23115A

Triadic

#112358
#5A1123
#235A11

Split-Complementary

#112358
#5A2311
#485A11

Tetradic

#112358
#5A1148
#5A4811
#115A23

Monochromatic

#040815
#050A1A
#112358
#1D3D9A
#2D58D7

Rectangle

#112358
#48115A
#5A4811
#235A11

Compound

#112358
#23115A
#5A4811
#485A11

Variations

Lighter

#1E3E9E
#4063CC
#97A8DA

Darker

#0C1C49
#071233
#040A1F

Saturation

#2B3040
#11235A
#091F63

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)

Aa

vs White

14.94:1

AAA

Aa

vs Black

1.41:1

Fail

Deuteranopia

#112358
#002758

Original → Simulated

Protanopia

#112358
#212153

Original → Simulated

Tritanopia

#112358
#003028

Original → Simulated

Color Psychology

Focused · Cooling

Fibonacci Blue 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

#4C475D

Warm Bulb 2700K

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

#112358

Daylight 5500K

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

#394C81

Cool Bulb 6500K

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

Pairs With

#E8E9ED

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.

#483B13

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

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: #112358;
CSS — background 
background-color: #112358;
CSS Variable 
--color-fibonacci-blue: #112358;
Tailwind v3 — config 
colors: { 'fibonacci-blue': '#112358' }
Tailwind — arbitrary 
bg-[#112358] text-[#112358]
SCSS 
$fibonacci-blue: #112358;

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#233872 · ΔE 9.7

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#353963 · ΔE 13.7

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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 #112358?

#112358 is Fibonacci Blue, a deep blue with a cool undertone.

Is #112358 warm or cool?

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

What rooms work best with Fibonacci Blue?

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

What colors pair well with Fibonacci Blue?

Fibonacci Blue 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 Fibonacci Blue?

You can download Fibonacci Blue 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 Fibonacci Blue?

The hex code is #112358. In RGB it's 17, 35, 88, and in HSL it's 225°, 68%, 21%.

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