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green · cool

#2ac221

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

Token name suggestion: Shadow Jade

RGB
42, 194, 33
HSL
117°, 71%, 45%
CMYK
78, 0, 83, 24
Luminance
0.3919

#2ac221 is a dark vivid green, 117° on the wheel and 61/100 on the cool side. Put black text on it (8.84:1). As text it scores 2.38:1 on white — use #1E8917 instead. Nearest name is Lime Green, nearest Tailwind family is green.

hsl(117 71% 45%)rgb(42 194 33)Base step 600AAA inkCool

At a glance

Every number on this page in one read: what #2ac221 is made of, how bright it looks, and which way it leans.

Hex
#2ac221
Hue
117°
green
Saturation
71%
vivid
Lightness
45%
dark
Brightness
76%
HSV value
Perceived
59%
weighted brightness
Luminance
0.3919
WCAG relative
Temperature
Cool
61/100 cool
Color family
Green
Tone
Vivid
Best ink
Black
8.84:1
Closest name
Lime Green
ΔE2000 2.9
Chroma
91.1
LCH, 0–130ish
OKLCH L
0.710
perceptual lightness
Tailwind
green
500 · ΔE 6.7
Web-safe
#33CC33
nearest of 216
Where it sits
Hue117° of 360°
Saturation71%
Lightness45%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #2ac221.

Temperature
Warm ← → Cool61% 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%
Green98%
Blue0%

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

Every format

HEX#2ac221
HEX (8-digit)#2ac221ff
RGBrgb(42, 194, 33)
RGBArgba(42, 194, 33, 1)
HSLhsl(117, 71%, 45%)
HSV / HSBhsv(117, 83%, 76%)
HWBhwb(117 13% 24%)
CMYKcmyk(78%, 0%, 83%, 24%)
LABlab(68.9 -65.9 62.9)
LCHlch(68.9 91.1 136.4)
OKLCHoklch(0.710 0.227 142.2)
XYZ (D65)xyz(20.52, 39.18, 7.92)
Decimal2802209
Display P3color(display-p3 0.165 0.761 0.129)
Web-safe#33CC33

Copy-ready code

every platformclick to select
/* CSS */
color: #2ac221;
background-color: #2ac221;
/* CSS custom property */
--brand: #2ac221;
/* Tailwind (arbitrary) */
class="text-[#2ac221] bg-[#2ac221]"
/* SCSS */
$brand: #2ac221;
/* SwiftUI */
Color(red: 0.165, green: 0.761, blue: 0.129)
/* UIKit */
UIColor(red: 0.165, green: 0.761, blue: 0.129, alpha: 1)
/* Android XML */
<color name="brand">#2AC221</color>
/* Android Compose */
Color(0xFF2AC221)
/* Flutter */
Color(0xFF2AC221)
/* Python / OpenCV (BGR) */
(33, 194, 42)
/* Python / PIL (RGB) */
(42, 194, 33)
/* Java AWT */
new Color(42, 194, 33)
/* .NET */
Color.FromArgb(255, 42, 194, 33)
/* OpenGL / Unity (0–1) */
(0.1647f, 0.7608f, 0.1294f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{42,194,33}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #2ac221 85%, white);
border-color: color-mix(in oklab, #2ac221 40%, transparent);
/* theme-aware in one line */
color: light-dark(#186D13, #D4EED3);
/* relative colour syntax */
--hover: hsl(from #2ac221 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: #F4FCF3;
  --brand-100: #E8F8E7;
  --brand-200: #CCF3C9;
  --brand-300: #A4EF9F;
  --brand-400: #76E76F;
  --brand-500: #48DE3F;
  --brand-600: #2ac221;
  --brand-700: #26AE1E;
  --brand-800: #1E8B18;
  --brand-900: #1A6515;
  --brand-950: #103F0D;
  --brand: #2ac221;
  --brand-ink: #000000;
  --brand-surface: #F5FAF4;
  --brand-border: #C2EDC0;
  --brand-hover: #24A31C;
  --brand-pressed: #1D8517;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #152414;
    --brand-ink: #D4EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F4FCF3',
        100: '#E8F8E7',
        200: '#CCF3C9',
        300: '#A4EF9F',
        400: '#76E76F',
        500: '#48DE3F',
        600: '#2ac221',
        700: '#26AE1E',
        800: '#1E8B18',
        900: '#1A6515',
        950: '#103F0D',
        DEFAULT: '#2ac221',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F4FCF3,
  '100': #E8F8E7,
  '200': #CCF3C9,
  '300': #A4EF9F,
  '400': #76E76F,
  '500': #48DE3F,
  '600': #2ac221,
  '700': #26AE1E,
  '800': #1E8B18,
  '900': #1A6515,
  '950': #103F0D,
);
$brand-base: #2ac221;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F4FCF3", "$type": "color" },
      "100": { "$value": "#E8F8E7", "$type": "color" },
      "200": { "$value": "#CCF3C9", "$type": "color" },
      "300": { "$value": "#A4EF9F", "$type": "color" },
      "400": { "$value": "#76E76F", "$type": "color" },
      "500": { "$value": "#48DE3F", "$type": "color" },
      "600": { "$value": "#2ac221", "$type": "color" },
      "700": { "$value": "#26AE1E", "$type": "color" },
      "800": { "$value": "#1E8B18", "$type": "color" },
      "900": { "$value": "#1A6515", "$type": "color" },
      "950": { "$value": "#103F0D", "$type": "color" }
    },
    "brandInk": { "$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 #2ac221 · 8.84:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.38:1
AA fail · AA large fail · AAA fail
Aa
Black text · 8.84:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #2ac221 as text scores 2.38:1 on white and 8.84:1 on black.
Best tinted ink on it, if plain black or white feels flat: #186D13 at 2.73:1.

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
#1E8917 · 4.52:1
AA on white−13% L
#1E8917
The quick fox
#166611 · 7.14:1
AAA on white−21% L
#166611
The quick fox
#2ac221 · 8.84:1
AA on blackalready passes
#2ac221
The quick fox
#2ac221 · 8.84:1
AAA on blackalready passes
#2ac221

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #25AC1D 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
#2ac221 on white: 2.38:1
AA ✗ fail · AA-large · AAA
Aa
#2ac221 on black: 8.84:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #2ac221 as text on that neutral, and that neutral as text on #2ac221.

NeutralRatioBoth directions
White2.38:1AaAa
Slate 502.27:1AaAa
Slate 1002.17:1AaAa
Slate 2001.93:1AaAa
Slate 3001.60:1AaAa
Slate 4001.08:1AaAa
Slate 5002.00:1AaAa
Slate 6003.19:1AaAa
Slate 7004.36:1AaAa
Slate 8006.16:1AaAa
Slate 9007.51:1AaAa
Black8.84:1AaAa
Colour vision deficiency
true color
protanopia · #C7AF00
deuteranopia · #B6A437
tritanopia · #00BCA5

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. #2ac221 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.

#F4FCF3
#E8F8E7
#CCF3C9
#A4EF9F
#76E76F
#48DE3F
#2ac221
#26AE1E
#1E8B18
#1A6515
#103F0D
Base = 600Lightest = 50 · #F4FCF3Darkest = 950 · #103F0DText 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 0.057 142.2);
  --brand-100: oklch(0.94 0.091 142.2);
  --brand-200: oklch(0.88 0.136 142.2);
  --brand-300: oklch(0.80 0.177 142.2);
  --brand-400: oklch(0.72 0.209 142.2);
  --brand-500: oklch(0.64 0.227 142.2);
  --brand-600: oklch(0.56 0.227 142.2);
  --brand-700: oklch(0.48 0.213 142.2);
  --brand-800: oklch(0.40 0.191 142.2);
  --brand-900: oklch(0.32 0.159 142.2);
  --brand-950: oklch(0.24 0.125 142.2);
}

Colors that work with #2ac221

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#C2EDC0
Hairlines and dividers
Muted text#4F9B4B
Captions on the surface
Accent#921CC6
Second voice, not a rival
Dark variant#186D13
Hover, pressed, headers
Light variant#EAFBE9
Selected rows, tints
Dark surface#152414
Dark-mode background
Hover#24A31C
One step down in lightness
Pressed#1D8517
Two steps down
Disabled#99BC97
Chroma pulled out
Focus ring#23E018
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 #2ac221

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 #186D13
Safe as a 1px border on white
No — use #25AC1D

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.

This is a confident chroma: strong enough to lead a brand, restrained enough to live in an interface all day. 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
  • EnergyMedium-high
  • 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#B921C2
Analogous left#7BC221
Analogous right#21C268
Split-complement 1#6821C2
Split-complement 2#C2217B
Triadic 1#212AC2
Triadic 2#C2212A
Tetradic#217BC2
On the wheel
Base+30°−30°+120°+240°+180°117°

#2ac221 sits at 117°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red16.5%
Green76.1%
Blue12.9%
R · 0–255
42
0x2a
G · 0–255
194
0xc2
B · 0–255
33
0x21

CMYK percentages

Cyan78.4%
Magenta0.0%
Yellow83.0%
Key (black)23.9%

Total ink coverage is 185%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#2ac221 text on a black background

contrast 8.84:1

Card sample

#2ac221 text on a white background

contrast 2.38:1

Card sample

#2ac221 on grey

2.17:1

#2ac221 on its own surface

2.25:1

#2ac221 on its dark surface

6.83:1

CSS3 live lab

Text font color

The quick brown fox

color: #2ac221;
Background color
Panel with #2ac221 background
background-color: #2ac221;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #2ac221;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(42, 194, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(42, 194, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #2ac221;
background: linear-gradient(135deg, #2ac221, #21C283);
Gradient text

Gradient headline

background: linear-gradient(90deg, #2ac221, #21C2AB);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #2ac221;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #2ac221;
caret-color: #2ac221;
Left rule
Pull quote or callout
border-left: 4px solid #2ac221;
Ring + tint
Selected chip
background: #EAFBE9;
box-shadow: inset 0 0 0 2px #2ac221;
Conic badge
68%
background: conic-gradient(#2ac221 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #2ac221 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, 194, 33, 0.5)
rgb(42 194 33 / 50%)
#2ac22180
hsl(117 71% 45% / 50%)
color-mix(in srgb, #2ac221 50%, transparent)
Alpha8-digit hexFlat on white
10%#2ac2211a#EAF9E9
20%#2ac22133#D4F3D3
40%#2ac22166#AAE7A6
60%#2ac22199#7FDA7A
80%#2ac221cc#55CE4D

Gradients from #2ac221

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, #4ADF41, #2ac221 45%, #186D13);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #2ac221, #1DA87D);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #2ac221, #B921C2);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #63E35C 0%, #2ac221 45%, #186D13 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%, #A2DD39 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #27DA86 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #186D13 0%, transparent 65%), #2ac221;

Monochromatic scale

Palettes built from #2ac221

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.

#2ac221 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

Converts to four-color process without much drama. Proof it anyway.

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 8.84:1.

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.

#2ac221, answered

What color is #2ac221?

#2ac221 is a dark vivid green, closest to Lime Green (ΔE2000 2.9). It sits at 117° on the hue wheel with 71% saturation and 45% lightness, which reads as cool.

What is the RGB value of #2ac221?

rgb(42, 194, 33) — 42 red, 194 green and 33 blue out of 255, or 16.5% / 76.1% / 12.9% by channel.

What is #2ac221 in HSL and HSV?

hsl(117, 71%, 45%) and hsv(117, 83%, 76%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #2ac221 a light or a dark color?

It is a mid-tone. Relative luminance is 0.3919 and perceived brightness is 59%, so black text on it reaches 8.84:1.

Should I use black or white text on #2ac221?

Black. It scores 8.84:1 against #2ac221, versus 2.38:1 for white — AAA at any size.

Is #2ac221 accessible on a white background?

#2ac221 on white scores 2.38:1, which fails WCAG AA at every size. Darken it to #1E8917 to reach 4.5:1, or #166611 for 7:1.

What is the complementary color of #2ac221?

#B921C2 sits directly opposite on the wheel. Softer options are the split-complements #6821C2 and #C2217B, which give the same contrast with far less vibration.

What colors go well with #2ac221?

For interface work: #F5FAF4 as the surface, #C2EDC0 for borders, #4F9B4B for secondary text, #921CC6 as an accent and #186D13 for hover and pressed states. For a palette, the analogous pair #7BC221 and #21C268 stays calm, while #B921C2 is the loudest partner.

What is #2ac221 in CMYK for printing?

cmyk(78%, 0%, 83%, 24%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #2ac221 warm or cool?

Cool — it scores 61 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #65C221; nudged cooler, #1FC452.

Which Tailwind color is closest to #2ac221?

The green family — its 500 step is #22c55e, ΔE2000 6.7 away. That is a visible difference, so define #2ac221 as a custom token rather than reaching for the built-in.

How do I use #2ac221 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#2ac221] or text-[#2ac221], 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 #2ac221 with 50% opacity?

rgba(42, 194, 33, 0.5), or #2ac22180 in eight-digit hex. Over white that composites to #95E190; over black, #156111.

Is #2ac221 a web-safe color?

No. The nearest web-safe colour is #33CC33, ΔE2000 2.7 away. The palette only matters for legacy displays and some email clients now.

What does the color #2ac221 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 #2ac221?

The safest is same-hue elevation: linear-gradient(135deg, #4ADF41, #2ac221 45%, #186D13). For more colour, a short hue run to #1DA87D keeps it rich without turning muddy.

Work with #2ac221 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #2ac221 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.