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green · cool

#2acf11

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

Token name suggestion: Shadow Basil

RGB
42, 207, 17
HSL
112°, 85%, 44%
CMYK
80, 0, 92, 19
Luminance
0.4516

#2acf11 is a dark electric green, 112° on the wheel and 59/100 on the cool side. Put black text on it (10.03:1). As text it scores 2.09:1 on white — use #1C880B instead. Nearest name is Lime Green, nearest Tailwind family is lime.

hsl(112 85% 44%)rgb(42 207 17)Base step 700AAA inkCool

At a glance

Every number on this page in one read: what #2acf11 is made of, how bright it looks, and which way it leans.

Hex
#2acf11
Hue
112°
green
Saturation
85%
electric
Lightness
44%
dark
Brightness
81%
HSV value
Perceived
63%
weighted brightness
Luminance
0.4516
WCAG relative
Temperature
Cool
59/100 cool
Color family
Green
Tone
Electric
Best ink
Black
10.03:1
Closest name
Lime Green
ΔE2000 2
Chroma
99.0
LCH, 0–130ish
OKLCH L
0.744
perceptual lightness
Tailwind
lime
500 · ΔE 7.7
Web-safe
#33CC00
nearest of 216
Where it sits
Hue112° of 360°
Saturation85%
Lightness44%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #2acf11.

Temperature
Warm ← → Cool59% 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#2acf11
HEX (8-digit)#2acf11ff
RGBrgb(42, 207, 17)
RGBArgba(42, 207, 17, 1)
HSLhsl(112, 85%, 44%)
HSV / HSBhsv(112, 92%, 81%)
HWBhwb(112 7% 19%)
CMYKcmyk(80%, 0%, 92%, 19%)
LABlab(73.0 -70.4 69.6)
LCHlch(73.0 99.0 135.3)
OKLCHoklch(0.744 0.244 141.7)
XYZ (D65)xyz(23.37, 45.16, 8.01)
Decimal2805521
Display P3color(display-p3 0.165 0.812 0.067)
Web-safe#33CC00

Copy-ready code

every platformclick to select
/* CSS */
color: #2acf11;
background-color: #2acf11;
/* CSS custom property */
--brand: #2acf11;
/* Tailwind (arbitrary) */
class="text-[#2acf11] bg-[#2acf11]"
/* SCSS */
$brand: #2acf11;
/* SwiftUI */
Color(red: 0.165, green: 0.812, blue: 0.067)
/* UIKit */
UIColor(red: 0.165, green: 0.812, blue: 0.067, alpha: 1)
/* Android XML */
<color name="brand">#2ACF11</color>
/* Android Compose */
Color(0xFF2ACF11)
/* Flutter */
Color(0xFF2ACF11)
/* Python / OpenCV (BGR) */
(17, 207, 42)
/* Python / PIL (RGB) */
(42, 207, 17)
/* Java AWT */
new Color(42, 207, 17)
/* .NET */
Color.FromArgb(255, 42, 207, 17)
/* OpenGL / Unity (0–1) */
(0.1647f, 0.8118f, 0.0667f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{42,207,17}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #2acf11 85%, white);
border-color: color-mix(in oklab, #2acf11 40%, transparent);
/* theme-aware in one line */
color: light-dark(#18760A, #D6EED3);
/* relative colour syntax */
--hover: hsl(from #2acf11 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: #F4FCF2;
  --brand-100: #E8FAE5;
  --brand-200: #CCF7C5;
  --brand-300: #A4F697;
  --brand-400: #76F263;
  --brand-500: #49EE30;
  --brand-600: #2EE213;
  --brand-700: #2acf11;
  --brand-800: #1F970C;
  --brand-900: #1A6D0D;
  --brand-950: #104408;
  --brand: #2acf11;
  --brand-ink: #000000;
  --brand-surface: #F5FAF4;
  --brand-border: #C6EDC0;
  --brand-hover: #23AE0E;
  --brand-pressed: #1D8D0C;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #162414;
    --brand-ink: #D6EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4FCF2',
        100: '#E8FAE5',
        200: '#CCF7C5',
        300: '#A4F697',
        400: '#76F263',
        500: '#49EE30',
        600: '#2EE213',
        700: '#2acf11',
        800: '#1F970C',
        900: '#1A6D0D',
        950: '#104408',
        DEFAULT: '#2acf11',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4FCF2,
  '100': #E8FAE5,
  '200': #CCF7C5,
  '300': #A4F697,
  '400': #76F263,
  '500': #49EE30,
  '600': #2EE213,
  '700': #2acf11,
  '800': #1F970C,
  '900': #1A6D0D,
  '950': #104408,
);
$brand-base: #2acf11;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4FCF2", "$type": "color" },
      "100": { "$value": "#E8FAE5", "$type": "color" },
      "200": { "$value": "#CCF7C5", "$type": "color" },
      "300": { "$value": "#A4F697", "$type": "color" },
      "400": { "$value": "#76F263", "$type": "color" },
      "500": { "$value": "#49EE30", "$type": "color" },
      "600": { "$value": "#2EE213", "$type": "color" },
      "700": { "$value": "#2acf11", "$type": "color" },
      "800": { "$value": "#1F970C", "$type": "color" },
      "900": { "$value": "#1A6D0D", "$type": "color" },
      "950": { "$value": "#104408", "$type": "color" }
    },
    "brandInk": { "$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 #2acf11 · 10.03:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.09:1
AA fail · AA large fail · AAA fail
Aa
Black text · 10.03:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #2acf11 as text scores 2.09:1 on white and 10.03:1 on black.
Best tinted ink on it, if plain black or white feels flat: #18760A at 2.76:1.

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
#1C880B · 4.59:1
AA on white−15% L
#1C880B
The quick fox
#156708 · 7.06:1
AAA on white−22% L
#156708
The quick fox
#2acf11 · 10.03:1
AA on blackalready passes
#2acf11
The quick fox
#2acf11 · 10.03:1
AAA on blackalready passes
#2acf11

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #22A90E 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
#2acf11 on white: 2.09:1
AA ✗ fail · AA-large · AAA
Aa
#2acf11 on black: 10.03:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #2acf11 as text on that neutral, and that neutral as text on #2acf11.

NeutralRatioBoth directions
White2.09:1AaAa
Slate 502.00:1AaAa
Slate 1001.91:1AaAa
Slate 2001.70:1AaAa
Slate 3001.41:1AaAa
Slate 4001.22:1AaAa
Slate 5002.27:1AaAa
Slate 6003.62:1AaAa
Slate 7004.95:1AaAa
Slate 8006.99:1AaAa
Slate 9008.53:1AaAa
Black10.03:1AaAa
Colour vision deficiency
true color
protanopia · #D4BA00
deuteranopia · #C3AF32
tritanopia · #00C8B0

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. #2acf11 is pinned to step 700; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F4FCF2
#E8FAE5
#CCF7C5
#A4F697
#76F263
#49EE30
#2EE213
#2acf11
#1F970C
#1A6D0D
#104408
Base = 700Lightest = 50 · #F4FCF2Darkest = 950 · #104408Text 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 0.061 141.7);
  --brand-100: oklch(0.94 0.098 141.7);
  --brand-200: oklch(0.88 0.147 141.7);
  --brand-300: oklch(0.80 0.191 141.7);
  --brand-400: oklch(0.72 0.225 141.7);
  --brand-500: oklch(0.64 0.244 141.7);
  --brand-600: oklch(0.56 0.244 141.7);
  --brand-700: oklch(0.48 0.230 141.7);
  --brand-800: oklch(0.40 0.205 141.7);
  --brand-900: oklch(0.32 0.171 141.7);
  --brand-950: oklch(0.24 0.134 141.7);
}

Colors that work with #2acf11

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#C6EDC0
Hairlines and dividers
Muted text#559B4B
Captions on the surface
Accent#870DD3
Second voice, not a rival
Dark variant#18760A
Hover, pressed, headers
Light variant#EAFDE7
Selected rows, tints
Dark surface#162414
Dark-mode background
Hover#23AE0E
One step down in lightness
Pressed#1D8D0C
Two steps down
Disabled#9ABB95
Chroma pulled out
Focus ring#25EE06
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 #2acf11

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 #18760A
Safe as a 1px border on white
No — use #22A90E

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
  • Weight56/100
  • 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#B611CF
Analogous left#89CF11
Analogous right#11CF57
Split-complement 1#5711CF
Split-complement 2#CF1189
Triadic 1#112ACF
Triadic 2#CF112A
Tetradic#1189CF
On the wheel
Base+30°−30°+120°+240°+180°112°

#2acf11 sits at 112°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red16.5%
Green81.2%
Blue6.7%
R · 0–255
42
0x2a
G · 0–255
207
0xcf
B · 0–255
17
0x11

CMYK percentages

Cyan79.7%
Magenta0.0%
Yellow91.8%
Key (black)18.8%

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

Color previews

#2acf11 text on a black background

contrast 10.03:1

Card sample

#2acf11 text on a white background

contrast 2.09:1

Card sample

#2acf11 on grey

1.91:1

#2acf11 on its own surface

1.98:1

#2acf11 on its dark surface

7.74:1

CSS3 live lab

Text font color

The quick brown fox

color: #2acf11;
Background color
Panel with #2acf11 background
background-color: #2acf11;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #2acf11;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(42, 207, 17, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(42, 207, 17, 0.45);
Border & gradient
Gradient panel
border: 3px solid #2acf11;
background: linear-gradient(135deg, #2acf11, #11CF77);
Gradient text

Gradient headline

background: linear-gradient(90deg, #2acf11, #11CFA6);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #2acf11;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #2acf11;
caret-color: #2acf11;
Left rule
Pull quote or callout
border-left: 4px solid #2acf11;
Ring + tint
Selected chip
background: #EAFDE7;
box-shadow: inset 0 0 0 2px #2acf11;
Conic badge
68%
background: conic-gradient(#2acf11 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #2acf11 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(42, 207, 17, 0.5)
rgb(42 207 17 / 50%)
#2acf1180
hsl(112 85% 44% / 50%)
color-mix(in srgb, #2acf11 50%, transparent)
Alpha8-digit hexFlat on white
10%#2acf111a#EAFAE7
20%#2acf1133#D4F5CF
40%#2acf1166#AAECA0
60%#2acf1199#7FE270
80%#2acf11cc#55D941

Gradients from #2acf11

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, #48EE2F, #2acf11 45%, #18760A);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #2acf11, #0FB374);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #2acf11, #B611CF);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #61F04B 0%, #2acf11 45%, #18760A 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%, #B4ED26 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #13EB75 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #18760A 0%, transparent 65%), #2acf11;

Monochromatic scale

Palettes built from #2acf11

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.

#2acf11 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 10.03:1.

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.

#2acf11, answered

What color is #2acf11?

#2acf11 is a dark electric green, closest to Lime Green (ΔE2000 2). It sits at 112° on the hue wheel with 85% saturation and 44% lightness, which reads as cool.

What is the RGB value of #2acf11?

rgb(42, 207, 17) — 42 red, 207 green and 17 blue out of 255, or 16.5% / 81.2% / 6.7% by channel.

What is #2acf11 in HSL and HSV?

hsl(112, 85%, 44%) and hsv(112, 92%, 81%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #2acf11 a light or a dark color?

It is a mid-tone. Relative luminance is 0.4516 and perceived brightness is 63%, so black text on it reaches 10.03:1.

Should I use black or white text on #2acf11?

Black. It scores 10.03:1 against #2acf11, versus 2.09:1 for white — AAA at any size.

Is #2acf11 accessible on a white background?

#2acf11 on white scores 2.09:1, which fails WCAG AA at every size. Darken it to #1C880B to reach 4.5:1, or #156708 for 7:1.

What is the complementary color of #2acf11?

#B611CF sits directly opposite on the wheel. Softer options are the split-complements #5711CF and #CF1189, which give the same contrast with far less vibration.

What colors go well with #2acf11?

For interface work: #F5FAF4 as the surface, #C6EDC0 for borders, #559B4B for secondary text, #870DD3 as an accent and #18760A for hover and pressed states. For a palette, the analogous pair #89CF11 and #11CF57 stays calm, while #B611CF is the loudest partner.

What is #2acf11 in CMYK for printing?

cmyk(80%, 0%, 92%, 19%). 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 #2acf11 warm or cool?

Cool — it scores 59 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #70CF11; nudged cooler, #0FD13C.

Which Tailwind color is closest to #2acf11?

The lime family — its 500 step is #84cc16, ΔE2000 7.7 away. That is a visible difference, so define #2acf11 as a custom token rather than reaching for the built-in.

How do I use #2acf11 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#2acf11] or text-[#2acf11], 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 #2acf11 with 50% opacity?

rgba(42, 207, 17, 0.5), or #2acf1180 in eight-digit hex. Over white that composites to #95E788; over black, #156809.

Is #2acf11 a web-safe color?

No. The nearest web-safe colour is #33CC00, ΔE2000 1 away. The palette only matters for legacy displays and some email clients now.

What does the color #2acf11 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 #2acf11?

The safest is same-hue elevation: linear-gradient(135deg, #48EE2F, #2acf11 45%, #18760A). For more colour, a short hue run to #0FB374 keeps it rich without turning muddy.

Work with #2acf11 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #2acf11 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.