BLUES

Optimum Blue

#2B50A2

RGB 43, 80, 162 · HSL 221°, 58%, 40% · CMYK 73, 51, 0, 36

Optimum Blue is #2B50A2 in HEX — rgb(43, 80, 162), hsl(221°, 58%, 40%), cmyk(73%, 51%, 0%, 36%).

Optimum Blue pulls into the rich end of the blues spectrum — HSL 221°, 58%, 40%. 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#2B50A2

RGB43, 80, 162

HSL221°, 58%, 40%

HSV221°, 73%, 64%

CMYK73, 51, 0, 36

Decimal2838690

CSS RGBrgb(43, 80, 162)

CSS HSLhsl(221, 58%, 40%)

Paint Matches — this color across 16 brands

Behr

Optimum Blue M540-7

Exact match

Colorhouse

Petal .05 Petal-05

ΔE 6.1 · #1F4992

Dutch Boy

Blue Royale VS-9550

ΔE 7.4 · #243F90

Vista Paint

Dancing Sea C-640

ΔE 8.9 · #224B8F

PPG

Crushed Velvet 1245-7

ΔE 9.3 · #445397

Benjamin Moore

Evening 2066-20

ΔE 10.1 · #014F94

Hallman-Lindsay

Blue Highlight 613

ΔE 10.3 · #324A8B

Dunn-Edwards

Deep Sapphire DEA137

ΔE 11.3 · #1D4E8F

Dulux

Mondrian Blue S39H9

ΔE 11.7 · #0F4B8C

RAL

Signal Blue 5005

ΔE 17.1 · #1E2D6E

Valspar

Twinkle Night 4004-8C

ΔE 17.3 · #5A65A1

Sherwin-Williams

Morning Glory SW6971

ΔE 18.3 · #3C4C80

Kilz

Sapphire Sequin RB120-02

ΔE 19 · #4B568A

IKEA

IKEA128 128

ΔE 19.8 · #4A72B0

Kobra

Violet 25

ΔE 20.7 · #776BAB

Farrow & Ball

Pitch Blue 220

ΔE 33.2 · #636E8F

Light Reflectance & Undertone

Light Reflectance Value (LRV)

9/100

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

#2B50A2

#A17C2B

Analogous

#2B8BA1

#2B50A2

#412BA1

Triadic

#2B50A2

#A12B50

#50A12B

Split-Complementary

#2B50A2

#A1412B

#8BA12B

Tetradic

#2B50A2

#A12B8B

#A17C2B

#2BA141

Monochromatic

#0B1428

#1B3265

#2B50A2

#4A74CF

#86A2DF

Rectangle

#2B50A2

#7C2BA1

#A17C2B

#50A12B

Compound

#2B50A2

#412BA1

#A17C2B

#8BA12B

Variations

Lighter

#3E6BCC

#7693D0

#B4C1DF

Darker

#203F83

#142B5C

#0B1936

Saturation

#545F78

#2B50A1

#1548B7

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

7.58:1

AAA

vs Black

2.77:1

Fail

Deuteranopia

#2B50A2

#1F53A2

Original → Simulated

Protanopia

#2B50A2

#4B4B9A

Original → Simulated

Tritanopia

#2B50A2

#0B6356

Original → Simulated

Color Psychology

Focused · Cooling

Optimum 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

#606995

Warm Bulb 2700K

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

#2B50A2

Daylight 5500K

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

#4D6EB9

Cool Bulb 6500K

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

Pairs With

#E8EAED

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.

#81662C

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 · Doors · Mouldings

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: #2B50A2;

CSS — background

background-color: #2B50A2;

CSS Variable

--color-optimum-blue: #2B50A2;

Tailwind v3 — config

colors: { 'optimum-blue': '#2B50A2' }

Tailwind — arbitrary

bg-[#2B50A2] text-[#2B50A2]

SCSS

$optimum-blue: #2B50A2;

Similar Colors

Evening Blue

#004E93 · ΔE 10.1

Twilight Blue

#365496 · ΔE 10.2

Warriors Blue

#00498D · ΔE 10.3

Delphinium

#304C89 · ΔE 12.8

Big Country Blue

#0066B1 · ΔE 13.6

Scandinavian Blue

#4E4E8C · ΔE 13.8

Mosaic

#3862A3 · ΔE 14.1

Dark Royal Blue

#144B86 · ΔE 15.4

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 #2B50A2?

#2B50A2 is Optimum Blue, a mid-tone blue with a cool undertone.

Is #2B50A2 warm or cool?

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

What rooms work best with Optimum Blue?

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

What colors pair well with Optimum Blue?

Optimum 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 Optimum Blue?

You can download Optimum 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 Optimum Blue?

The hex code is #2B50A2. In RGB it's 43, 80, 162, and in HSL it's 221°, 58%, 40%.

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