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green · cool

#2cdb09

a dark, electric green · cool · closest name: Lime Green

Token name suggestion: Shadow Basil

RGB
44, 219, 9
HSL
110°, 92%, 45%
CMYK
80, 0, 96, 14
Luminance
0.5122

#2cdb09 is a dark electric green, 110° on the wheel and 58/100 on the cool side. Put black text on it (11.24:1). As text it scores 1.87:1 on white — use #1B8806 instead. Nearest name is Lime Green, nearest Tailwind family is lime.

hsl(110 92% 45%)rgb(44 219 9)Base step 600AAA inkCool

At a glance

Every number on this page in one read: what #2cdb09 is made of, how bright it looks, and which way it leans.

Hex
#2cdb09
Hue
110°
green
Saturation
92%
electric
Lightness
45%
dark
Brightness
86%
HSV value
Perceived
66%
weighted brightness
Luminance
0.5122
WCAG relative
Temperature
Cool
58/100 cool
Color family
Green
Tone
Electric
Best ink
Black
11.24:1
Closest name
Lime Green
ΔE2000 4.2
Chroma
104.3
LCH, 0–130ish
OKLCH L
0.776
perceptual lightness
Tailwind
lime
500 · ΔE 8
Web-safe
#33CC00
nearest of 216
Where it sits
Hue110° of 360°
Saturation92%
Lightness45%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #2cdb09.

Temperature
Warm ← → Cool58% cool

Reads cool. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.

Luminance by channel
Red1%
Green99%
Blue0%

Green carries most of what the eye calls brightness — that is why WCAG weights it 0.7152.

Every format

HEX#2cdb09
HEX (8-digit)#2cdb09ff
RGBrgb(44, 219, 9)
RGBArgba(44, 219, 9, 1)
HSLhsl(110, 92%, 45%)
HSV / HSBhsv(110, 96%, 86%)
HWBhwb(110 4% 14%)
CMYKcmyk(80%, 0%, 96%, 14%)
LABlab(76.8 -73.7 73.7)
LCHlch(76.8 104.3 135.0)
OKLCHoklch(0.776 0.257 141.6)
XYZ (D65)xyz(26.42, 51.22, 8.75)
Decimal2939657
Display P3color(display-p3 0.173 0.859 0.035)
Web-safe#33CC00

Copy-ready code

every platformclick to select
/* CSS */
color: #2cdb09;
background-color: #2cdb09;
/* CSS custom property */
--brand: #2cdb09;
/* Tailwind (arbitrary) */
class="text-[#2cdb09] bg-[#2cdb09]"
/* SCSS */
$brand: #2cdb09;
/* SwiftUI */
Color(red: 0.173, green: 0.859, blue: 0.035)
/* UIKit */
UIColor(red: 0.173, green: 0.859, blue: 0.035, alpha: 1)
/* Android XML */
<color name="brand">#2CDB09</color>
/* Android Compose */
Color(0xFF2CDB09)
/* Flutter */
Color(0xFF2CDB09)
/* Python / OpenCV (BGR) */
(9, 219, 44)
/* Python / PIL (RGB) */
(44, 219, 9)
/* Java AWT */
new Color(44, 219, 9)
/* .NET */
Color.FromArgb(255, 44, 219, 9)
/* OpenGL / Unity (0–1) */
(0.1725f, 0.8588f, 0.0353f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{44,219,9}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #2cdb09 85%, white);
border-color: color-mix(in oklab, #2cdb09 40%, transparent);
/* theme-aware in one line */
color: light-dark(#197A05, #D7EED3);
/* relative colour syntax */
--hover: hsl(from #2cdb09 h s calc(l - 7));

Design tokens

The same ramp in the four formats a team actually needs. Paste one and the whole palette lands with it.

css custom propertiesclick to select
:root {
  --brand-50: #F4FDF2;
  --brand-100: #E8FBE4;
  --brand-200: #CCF9C3;
  --brand-300: #A4FB93;
  --brand-400: #77F85D;
  --brand-500: #4AF627;
  --brand-600: #2cdb09;
  --brand-700: #27C408;
  --brand-800: #1F9D06;
  --brand-900: #1B7109;
  --brand-950: #114706;
  --brand: #2cdb09;
  --brand-ink: #000000;
  --brand-surface: #F5FAF4;
  --brand-border: #C7EDC0;
  --brand-hover: #25B908;
  --brand-pressed: #1E9606;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #162414;
    --brand-ink: #D7EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4FDF2',
        100: '#E8FBE4',
        200: '#CCF9C3',
        300: '#A4FB93',
        400: '#77F85D',
        500: '#4AF627',
        600: '#2cdb09',
        700: '#27C408',
        800: '#1F9D06',
        900: '#1B7109',
        950: '#114706',
        DEFAULT: '#2cdb09',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4FDF2,
  '100': #E8FBE4,
  '200': #CCF9C3,
  '300': #A4FB93,
  '400': #77F85D,
  '500': #4AF627,
  '600': #2cdb09,
  '700': #27C408,
  '800': #1F9D06,
  '900': #1B7109,
  '950': #114706,
);
$brand-base: #2cdb09;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4FDF2", "$type": "color" },
      "100": { "$value": "#E8FBE4", "$type": "color" },
      "200": { "$value": "#CCF9C3", "$type": "color" },
      "300": { "$value": "#A4FB93", "$type": "color" },
      "400": { "$value": "#77F85D", "$type": "color" },
      "500": { "$value": "#4AF627", "$type": "color" },
      "600": { "$value": "#2cdb09", "$type": "color" },
      "700": { "$value": "#27C408", "$type": "color" },
      "800": { "$value": "#1F9D06", "$type": "color" },
      "900": { "$value": "#1B7109", "$type": "color" },
      "950": { "$value": "#114706", "$type": "color" }
    },
    "brandInk": { "$value": "#000000", "$type": "color" }
  }
}

Best text color

Only one of black and white can be right. This is the one, with the number that proves it.

Readable at a glance#000000 on #2cdb09 · 11.24:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.87:1
AA fail · AA large fail · AAA fail
Aa
Black text · 11.24:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #2cdb09 as text scores 1.87:1 on white and 11.24:1 on black.
Best tinted ink on it, if plain black or white feels flat: #197A05 at 2.94:1.

Make it accessible

A contrast checker tells you that you failed. This tells you what to ship instead — same hue, same saturation, lightness moved only as far as WCAG demands.

The quick fox
#1B8806 · 4.59:1
AA on white−17% L
#1B8806
The quick fox
#146504 · 7.26:1
AAA on white−24% L
#146504
The quick fox
#2cdb09 · 11.24:1
AA on blackalready passes
#2cdb09
The quick fox
#2cdb09 · 11.24:1
AAA on blackalready passes
#2cdb09

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #22AA07 is enough for headings on white. Non-text elements such as icons, chart strokes and focus rings also sit at 3:1 under WCAG 2.2 (1.4.11).

Accessibility — WCAG contrast

Aa
#2cdb09 on white: 1.87:1
AA ✗ fail · AA-large · AAA
Aa
#2cdb09 on black: 11.24:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #2cdb09 as text on that neutral, and that neutral as text on #2cdb09.

NeutralRatioBoth directions
White1.87:1AaAa
Slate 501.79:1AaAa
Slate 1001.70:1AaAa
Slate 2001.52:1AaAa
Slate 3001.26:1AaAa
Slate 4001.37:1AaAa
Slate 5002.55:1AaAa
Slate 6004.06:1AaAa
Slate 7005.54:1AaAa
Slate 8007.83:1AaAa
Slate 9009.56:1AaAa
Black11.24:1AaAa
Colour vision deficiency
true color
protanopia · #E0C500
deuteranopia · #CEB933
tritanopia · #00D4BA

Roughly one man in twelve has some form of colour vision deficiency. If any of the three panels above is hard to tell apart from a neighbouring colour in your palette, add a shape, an icon or a label so the meaning does not rest on hue alone.

Color scale — 50 to 950

A Tailwind-shaped ramp built around this exact hex. #2cdb09 is pinned to step 600; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F4FDF2
#E8FBE4
#CCF9C3
#A4FB93
#77F85D
#4AF627
#2cdb09
#27C408
#1F9D06
#1B7109
#114706
Base = 600Lightest = 50 · #F4FDF2Darkest = 950 · #114706Text step on white = 900
Perceptual ramp — OKLCH

The same eleven steps expressed in OKLCH, where equal lightness numbers actually look equally spaced. HSL ramps go muddy in the yellows and washed out in the blues; this one does not. Modern browsers render it natively — the hex ramp above is the fallback.

50100200300400500600700800900950
oklch tokensclick to select
:root {
  --brand-50: oklch(0.97 0.064 141.6);
  --brand-100: oklch(0.94 0.103 141.6);
  --brand-200: oklch(0.88 0.154 141.6);
  --brand-300: oklch(0.80 0.200 141.6);
  --brand-400: oklch(0.72 0.236 141.6);
  --brand-500: oklch(0.64 0.257 141.6);
  --brand-600: oklch(0.56 0.257 141.6);
  --brand-700: oklch(0.48 0.241 141.6);
  --brand-800: oklch(0.40 0.216 141.6);
  --brand-900: oklch(0.32 0.180 141.6);
  --brand-950: oklch(0.24 0.141 141.6);
}

Colors that work with #2cdb09

Not a palette — a role sheet. Each swatch answers one question you will hit while building the component.

Text on it#000000
Black wins here
Surface#F5FAF4
Tinted page background
Border#C7EDC0
Hairlines and dividers
Muted text#589B4B
Captions on the surface
Accent#8404E0
Second voice, not a rival
Dark variant#197A05
Hover, pressed, headers
Light variant#EAFEE7
Selected rows, tints
Dark surface#162414
Dark-mode background
Hover#25B908
One step down in lightness
Pressed#1E9606
Two steps down
Disabled#9EBD97
Chroma pulled out
Focus ring#29F800
Offset from the fill so it reads
Light mode
Everything in its place

Surface, border, heading and body all derive from this one hue, so the screen stays coherent without a second palette.

Primary actionSecondaryBadge
Dark mode
Same hue, inverted

Lightness flips, hue holds. The accent stays the anchor in both themes.

Primary actionSecondaryAccent

In real components

The same eight roles, wired into the interface patterns you will actually build with them. Every state below is a computed value, not a mock-up.

Buttons and states
Save changesHoverPressedDisabled
OutlineSubtleLinkFocused
Form field
you@company.com

Focus ring uses the light variant so the field still reads as one shape.

Send me product updates
Notice
Your export is ready

The file stays available for seven days. Download it before it expires.

NewBetaDraft
Data
Storage used68%
Acme LtdActive
NorthwindTrial
GlobexActive

How to use #2cdb09

Derived from its contrast, chroma and lightness — not from taste.

Works well for
  • Text and icons on dark surfaces
  • Primary buttons and calls to action
  • Focus rings, active and selected states
  • Headers, footers and dark-mode surfaces
  • Brand accents, badges and data highlights
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • Black text placed on it
  • Status meaning — pair it with an icon or label, never colour alone
  • Pairing with a same-lightness hue — edges vibrate
Minimum size as text on white
Not as text
Safe as a fill behind white type
No — use #197A05
Safe as a 1px border on white
No — use #22AA07

Meaning and mood

What a colour in this family tends to signal, and how this particular chroma and lightness change the reading.

safegrowingnaturalpermissive

Green means go, well, and grown. It carries finance, sustainability and health with almost no explanation needed.

At this chroma the association is amplified — it will dominate anything placed beside it, so give it space and use it sparingly. The low lightness adds weight and formality.

Worth knowing

Red/green pairs are the most common colour-blindness failure — never let the two carry meaning alone.

Reads as
  • FormalityHigh
  • EnergyHigh
  • Weight55/100
  • TemperatureCool
  • ApproachabilityBalanced

Colour associations are cultural and vary by market. Treat these as a starting point for a conversation with your audience, not a finding about them.

Similar colors

One move away from this hex in each direction. Every swatch is its own page.

Color relationships

The wheel positions with their names attached, so you can grab the one you actually need.

Complementary#B809DB
Analogous left#95DB09
Analogous right#09DB4F
Split-complement 1#4F09DB
Split-complement 2#DB0995
Triadic 1#092CDB
Triadic 2#DB092C
Tetradic#0995DB
On the wheel
Base+30°−30°+120°+240°+180°110°

#2cdb09 sits at 110°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red17.3%
Green85.9%
Blue3.5%
R · 0–255
44
0x2c
G · 0–255
219
0xdb
B · 0–255
9
0x09

CMYK percentages

Cyan79.9%
Magenta0.0%
Yellow95.9%
Key (black)14.1%

Total ink coverage is 190%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#2cdb09 text on a black background

contrast 11.24:1

Card sample

#2cdb09 text on a white background

contrast 1.87:1

Card sample

#2cdb09 on grey

1.70:1

#2cdb09 on its own surface

1.77:1

#2cdb09 on its dark surface

8.67:1

CSS3 live lab

Text font color

The quick brown fox

color: #2cdb09;
Background color
Panel with #2cdb09 background
background-color: #2cdb09;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #2cdb09;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(44, 219, 9, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(44, 219, 9, 0.45);
Border & gradient
Gradient panel
border: 3px solid #2cdb09;
background: linear-gradient(135deg, #2cdb09, #09DB72);
Gradient text

Gradient headline

background: linear-gradient(90deg, #2cdb09, #09DBA6);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #2cdb09;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #2cdb09;
caret-color: #2cdb09;
Left rule
Pull quote or callout
border-left: 4px solid #2cdb09;
Ring + tint
Selected chip
background: #EAFEE7;
box-shadow: inset 0 0 0 2px #2cdb09;
Conic badge
68%
background: conic-gradient(#2cdb09 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #2cdb09 over white; the bottom row is the same alpha over a checkerboard, so you can see what survives on a photo or a video.

Bottom row of hexes is the flattened result over white — use those when a design tool refuses transparency, or when you need a solid fallback.

alpha in every syntaxclick to select
rgba(44, 219, 9, 0.5)
rgb(44 219 9 / 50%)
#2cdb0980
hsl(110 92% 45% / 50%)
color-mix(in srgb, #2cdb09 50%, transparent)
Alpha8-digit hexFlat on white
10%#2cdb091a#EAFBE6
20%#2cdb0933#D5F8CE
40%#2cdb0966#ABF19D
60%#2cdb0999#80E96B
80%#2cdb09cc#56E23A

Gradients from #2cdb09

Six recipes, each built from this hex and shown with the exact CSS that produced it.

Elevation
Same hue, three lightnesses — safe anywhere
background: linear-gradient(135deg, #4DF62B, #2cdb09 45%, #197A05);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #2cdb09, #08BE72);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #2cdb09, #B809DB);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #65F748 0%, #2cdb09 45%, #197A05 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F5FAF4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #C1F621 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #0EF56E 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #197A05 0%, transparent 65%), #2cdb09;

Monochromatic scale

Palettes built from #2cdb09

Shades — darker

Tints — lighter

Tones — desaturated

Color harmonies

Nearest named colors

Ranked with CIEDE2000 across all 139 CSS keywords. Under ΔE 2 the eye stops telling them apart; over ΔE 10 they are plainly different colors.

#2cdb09 in the real world

Where a color in this family tends to land, and the interface roles it is usually asked to play.

Industries
SustainabilityFinanceHealth and wellnessAgriculture
Common UI roles
ButtonsLinksFocus statesCharts
Print note

Sits outside most CMYK gamuts — expect a duller press result, or specify a spot ink.

On screens

Holds up across typical panel gamma. Still worth checking on an uncalibrated laptop, where mid-tones shift most.

In dark mode

Usable as-is on a dark surface at 11.24:1.

Explore nearby colors

Small, deliberate steps away from this hex — useful when you are hunting for the version of a colour that finally feels right.

#2cdb09, answered

What color is #2cdb09?

#2cdb09 is a dark electric green, closest to Lime Green (ΔE2000 4.2). It sits at 110° on the hue wheel with 92% saturation and 45% lightness, which reads as cool.

What is the RGB value of #2cdb09?

rgb(44, 219, 9) — 44 red, 219 green and 9 blue out of 255, or 17.3% / 85.9% / 3.5% by channel.

What is #2cdb09 in HSL and HSV?

hsl(110, 92%, 45%) and hsv(110, 96%, 86%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #2cdb09 a light or a dark color?

It is a light color. Relative luminance is 0.5122 and perceived brightness is 66%, so black text on it reaches 11.24:1.

Should I use black or white text on #2cdb09?

Black. It scores 11.24:1 against #2cdb09, versus 1.87:1 for white — AAA at any size.

Is #2cdb09 accessible on a white background?

#2cdb09 on white scores 1.87:1, which fails WCAG AA at every size. Darken it to #1B8806 to reach 4.5:1, or #146504 for 7:1.

What is the complementary color of #2cdb09?

#B809DB sits directly opposite on the wheel. Softer options are the split-complements #4F09DB and #DB0995, which give the same contrast with far less vibration.

What colors go well with #2cdb09?

For interface work: #F5FAF4 as the surface, #C7EDC0 for borders, #589B4B for secondary text, #8404E0 as an accent and #197A05 for hover and pressed states. For a palette, the analogous pair #95DB09 and #09DB4F stays calm, while #B809DB is the loudest partner.

What is #2cdb09 in CMYK for printing?

cmyk(80%, 0%, 96%, 14%). This is a screen-to-ink approximation — a color this saturated sits outside most CMYK gamuts and will print duller than it looks here.

Is #2cdb09 warm or cool?

Cool — it scores 58 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #79DB09; nudged cooler, #07DD32.

Which Tailwind color is closest to #2cdb09?

The lime family — its 500 step is #84cc16, ΔE2000 8 away. That is a visible difference, so define #2cdb09 as a custom token rather than reaching for the built-in.

How do I use #2cdb09 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#2cdb09] or text-[#2cdb09], or register the whole ramp under theme.extend.colors.brand so you get bg-brand-500 and friends. The generated 50–950 scale on this page is ready to paste into your config.

What is #2cdb09 with 50% opacity?

rgba(44, 219, 9, 0.5), or #2cdb0980 in eight-digit hex. Over white that composites to #96ED84; over black, #166E05.

Is #2cdb09 a web-safe color?

No. The nearest web-safe colour is #33CC00, ΔE2000 3.6 away. The palette only matters for legacy displays and some email clients now.

What does the color #2cdb09 mean?

As a green, it reads safe, growing, natural. Green means go, well, and grown. It carries finance, sustainability and health with almost no explanation needed. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #2cdb09?

The safest is same-hue elevation: linear-gradient(135deg, #4DF62B, #2cdb09 45%, #197A05). For more colour, a short hue run to #08BE72 keeps it rich without turning muddy.

Work with #2cdb09 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #2cdb09 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.