GREENS

Chartreuse Spark

#B5CC18

RGB 181, 204, 24 · HSL 68°, 79%, 45% · CMYK 11, 0, 88, 20

Chartreuse Spark is #B5CC18 in HEX — rgb(181, 204, 24), hsl(68°, 79%, 45%), cmyk(11%, 0%, 88%, 20%).

Chartreuse Spark pulls into the mid-tone end of the greens spectrum — HSL 68°, 79%, 45%. The saturated saturation makes it bold and immediate, and the hue reads warm. In interior projects it shines on bedrooms, bathrooms, libraries — for grounding, restorative spaces. Reads best alongside soft white walls, oak floors, brass, warm clay accents.

Color Codes

HEX#B5CC18

RGB181, 204, 24

HSL68°, 79%, 45%

HSV68°, 88%, 80%

CMYK11, 0, 88, 20

Decimal11914264

CSS RGBrgb(181, 204, 24)

CSS HSLhsl(68, 79%, 45%)

Paint Matches — this color across 16 brands

Benjamin Moore

Bright 2025-10

ΔE 2.6 · #B5CB01

Behr

Green Neon P340-6

ΔE 3.9 · #A8C200

Dunn-Edwards

Lime Twist DEA124

ΔE 5 · #C6D624

Sherwin-Williams

Center Stage SW6920

ΔE 5.1 · #B2C216

Vista Paint

Sour Lime K-392

ΔE 5.6 · #C8D62D

Dulux

Jazzercise S20H9 · SB8B4

ΔE 9.3 · #BCE12A

Kilz

Green Gone Wild LH270

ΔE 11.4 · #CCC921

Dutch Boy

Temptations VS-9503

ΔE 11.9 · #A3CD39

Valspar

Lime Passion 6008-10C

ΔE 12.6 · #C5C225

PPG

Slap Happy 1217-7

ΔE 16.7 · #C9CC4A

Kobra

Fluo 48

ΔE 20.6 · #EDEB00

RAL

Zinc Yellow 1018

ΔE 21.4 · #F8F32B

Colorhouse

Petal .02 Petal-02

ΔE 23.6 · #C3D263

Hallman-Lindsay

Citron 850

ΔE 25.9 · #FFDE42

IKEA

IKEA109 109

ΔE 31.7 · #F4D96C

Farrow & Ball

Babouche 223

ΔE 38.3 · #ECC363

Light Reflectance & Undertone

Light Reflectance Value (LRV)

53/100

Light

0 · DarkLight · 100

Reflects plenty of light and keeps spaces feeling open and airy while still showing clear colour. A safe, flexible choice for living areas.

Undertone

TemperatureWarm MasstoneYellow UndertoneGreen

Reads as a warm yellow with a green undertone showing through, especially in daylight. Pair trim and adjacent colours to either calm or amplify that undertone.

Color Theory

Complementary

#B5CC18

#3018CD

Analogous

#CD8B18

#B5CC18

#5BCD18

Triadic

#B5CC18

#18B5CD

#CD18B5

Split-Complementary

#B5CC18

#185BCD

#8B18CD

Tetradic

#B5CC18

#18CD8B

#3018CD

#CD185B

Monochromatic

#3C4408

#798910

#B5CC18

#D4EA48

#E4F28D

Rectangle

#B5CC18

#18CD30

#3018CD

#CD18B5

Compound

#B5CC18

#5BCD18

#3018CD

#8B18CD

Variations

Lighter

#D0E736

#D4E372

#E2E9B3

Darker

#94A810

#677608

#3D4603

Saturation

#878E58

#B5CD18

#BED90C

Interior Use

Best Rooms

bedrooms, bathrooms, libraries

Best Uses

main walls, cabinetry, soft furniture

Pairs With

soft white walls, oak floors, brass, warm clay accents

Accessibility (WCAG)

vs White

1.81:1

Fail

vs Black

11.62:1

AAA

Deuteranopia

#B5CC18

#D0BC24

Original → Simulated

Protanopia

#B5CC18

#C8C853

Original → Simulated

Tritanopia

#B5CC18

#BEBCC5

Original → Simulated

Color Psychology

Calm · Restorative

Chartreuse Spark sits in the part of the spectrum the eye relaxes into. Designers reach for green when a room needs to feel like a refuge — bedrooms, libraries, bathrooms — because it lowers visual blood-pressure without flattening the space.

SymbolismGrowth, balance, nature

PersonalitySteady, grounded, thoughtful

calmnaturerestorativebalancebedroomlibrary

How it looks under different light

#C7C62D

Warm Bulb 2700K

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

#B5CC18

Daylight 5500K

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

#B4CB51

Cool Bulb 6500K

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

Pairs With

#EDEEE8

Trim

Matched off-white

Same hue at 92% lightness — trim reads coordinated, not stark.

#F8F8F7

Ceiling

Whisper tint

Near-white with a hint of the hero's undertone — ceiling feels intentional.

#3220A3

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: #B5CC18;

CSS — background

background-color: #B5CC18;

CSS Variable

--color-chartreuse-spark: #B5CC18;

Tailwind v3 — config

colors: { 'chartreuse-spark': '#B5CC18' }

Tailwind — arbitrary

bg-[#B5CC18] text-[#B5CC18]

SCSS

$chartreuse-spark: #B5CC18;

Similar Colors

Snow Cone Green

#BDD120 · ΔE 2.3

Bright Lime

#B4CA00 · ΔE 2.4

Margarita

#A4C700 · ΔE 5.7

Yew Green

#C3CF00 · ΔE 6.5

Spring Moss

#ABB915 · ΔE 9.1

Lime Green

#97C100 · ΔE 9.4

Eccentric Lime

#BFC428 · ΔE 9.7

New Lime

#D2D612 · ΔE 10.4

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 #B5CC18?

#B5CC18 is Chartreuse Spark, a mid-tone green with a warm undertone.

Is #B5CC18 warm or cool?

Chartreuse Spark reads warm, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Chartreuse Spark?

Chartreuse Spark works well in bedrooms, bathrooms, libraries. Designers typically use it for main walls, cabinetry, soft furniture.

What colors pair well with Chartreuse Spark?

Chartreuse Spark pairs naturally with soft white walls, oak floors, brass, warm clay accents. Its complementary color is also a strong contrast option for accents.

Where can I download Chartreuse Spark?

You can download Chartreuse Spark 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 Chartreuse Spark?

The hex code is #B5CC18. In RGB it's 181, 204, 24, and in HSL it's 68°, 79%, 45%.

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