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green · cool

#02cb3f

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

Token name suggestion: Slate Basil

RGB
2, 203, 63
HSL
138°, 98%, 40%
CMYK
99, 0, 69, 20
Luminance
0.4308

#02cb3f is a dark electric green, 138° on the wheel and 70/100 on the cool side. Put black text on it (9.62:1). As text it scores 2.18:1 on white — use #01892B instead. Nearest name is Lime Green, nearest Tailwind family is green.

hsl(138 98% 40%)rgb(2 203 63)Base step 700AAA inkCool

At a glance

Every number on this page in one read: what #02cb3f is made of, how bright it looks, and which way it leans.

Hex
#02cb3f
Hue
138°
green
Saturation
98%
electric
Lightness
40%
dark
Brightness
80%
HSV value
Perceived
62%
weighted brightness
Luminance
0.4308
WCAG relative
Temperature
Cool
70/100 cool
Color family
Green
Tone
Electric
Best ink
Black
9.62:1
Closest name
Lime Green
ΔE2000 2.2
Chroma
88.9
LCH, 0–130ish
OKLCH L
0.733
perceptual lightness
Tailwind
green
500 · ΔE 4.5
Web-safe
#00CC33
nearest of 216
Where it sits
Hue138° of 360°
Saturation98%
Lightness40%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #02cb3f.

Temperature
Warm ← → Cool70% 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
Red0%
Green99%
Blue1%

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

Every format

HEX#02cb3f
HEX (8-digit)#02cb3fff
RGBrgb(2, 203, 63)
RGBArgba(2, 203, 63, 1)
HSLhsl(138, 98%, 40%)
HSV / HSBhsv(138, 99%, 80%)
HWBhwb(138 1% 20%)
CMYKcmyk(99%, 0%, 69%, 20%)
LABlab(71.6 -69.3 55.6)
LCHlch(71.6 88.9 141.3)
OKLCHoklch(0.733 0.226 145.6)
XYZ (D65)xyz(22.28, 43.08, 11.84)
Decimal183103
Display P3color(display-p3 0.008 0.796 0.247)
Web-safe#00CC33

Copy-ready code

every platformclick to select
/* CSS */
color: #02cb3f;
background-color: #02cb3f;
/* CSS custom property */
--brand: #02cb3f;
/* Tailwind (arbitrary) */
class="text-[#02cb3f] bg-[#02cb3f]"
/* SCSS */
$brand: #02cb3f;
/* SwiftUI */
Color(red: 0.008, green: 0.796, blue: 0.247)
/* UIKit */
UIColor(red: 0.008, green: 0.796, blue: 0.247, alpha: 1)
/* Android XML */
<color name="brand">#02CB3F</color>
/* Android Compose */
Color(0xFF02CB3F)
/* Flutter */
Color(0xFF02CB3F)
/* Python / OpenCV (BGR) */
(63, 203, 2)
/* Python / PIL (RGB) */
(2, 203, 63)
/* Java AWT */
new Color(2, 203, 63)
/* .NET */
Color.FromArgb(255, 2, 203, 63)
/* OpenGL / Unity (0–1) */
(0.0078f, 0.7961f, 0.2471f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{2,203,63}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #02cb3f 85%, white);
border-color: color-mix(in oklab, #02cb3f 40%, transparent);
/* theme-aware in one line */
color: light-dark(#017E27, #D3EEDB);
/* relative colour syntax */
--hover: hsl(from #02cb3f 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: #F1FDF5;
  --brand-100: #E3FCEB;
  --brand-200: #C1FBD2;
  --brand-300: #90FEB1;
  --brand-400: #58FD8A;
  --brand-500: #21FD64;
  --brand-600: #02F24B;
  --brand-700: #02cb3f;
  --brand-800: #02A232;
  --brand-900: #067427;
  --brand-950: #044919;
  --brand: #02cb3f;
  --brand-ink: #000000;
  --brand-surface: #F4FAF6;
  --brand-border: #C0EDCD;
  --brand-hover: #02A834;
  --brand-pressed: #018429;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142419;
    --brand-ink: #D3EEDB;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F1FDF5',
        100: '#E3FCEB',
        200: '#C1FBD2',
        300: '#90FEB1',
        400: '#58FD8A',
        500: '#21FD64',
        600: '#02F24B',
        700: '#02cb3f',
        800: '#02A232',
        900: '#067427',
        950: '#044919',
        DEFAULT: '#02cb3f',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F1FDF5,
  '100': #E3FCEB,
  '200': #C1FBD2,
  '300': #90FEB1,
  '400': #58FD8A,
  '500': #21FD64,
  '600': #02F24B,
  '700': #02cb3f,
  '800': #02A232,
  '900': #067427,
  '950': #044919,
);
$brand-base: #02cb3f;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F1FDF5", "$type": "color" },
      "100": { "$value": "#E3FCEB", "$type": "color" },
      "200": { "$value": "#C1FBD2", "$type": "color" },
      "300": { "$value": "#90FEB1", "$type": "color" },
      "400": { "$value": "#58FD8A", "$type": "color" },
      "500": { "$value": "#21FD64", "$type": "color" },
      "600": { "$value": "#02F24B", "$type": "color" },
      "700": { "$value": "#02cb3f", "$type": "color" },
      "800": { "$value": "#02A232", "$type": "color" },
      "900": { "$value": "#067427", "$type": "color" },
      "950": { "$value": "#044919", "$type": "color" }
    },
    "brandInk": { "$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 #02cb3f · 9.62:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.18:1
AA fail · AA large fail · AAA fail
Aa
Black text · 9.62:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #02cb3f as text scores 2.18:1 on white and 9.62:1 on black.
Best tinted ink on it, if plain black or white feels flat: #017E27 at 2.40:1.

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
#01892B · 4.55:1
AA on white−13% L
#01892B
The quick fox
#016620 · 7.19:1
AAA on white−20% L
#016620
The quick fox
#02cb3f · 9.62:1
AA on blackalready passes
#02cb3f
The quick fox
#02cb3f · 9.62:1
AAA on blackalready passes
#02cb3f

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #02A834 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
#02cb3f on white: 2.18:1
AA ✗ fail · AA-large · AAA
Aa
#02cb3f on black: 9.62:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #02cb3f as text on that neutral, and that neutral as text on #02cb3f.

NeutralRatioBoth directions
White2.18:1AaAa
Slate 502.09:1AaAa
Slate 1001.99:1AaAa
Slate 2001.77:1AaAa
Slate 3001.47:1AaAa
Slate 4001.17:1AaAa
Slate 5002.18:1AaAa
Slate 6003.47:1AaAa
Slate 7004.74:1AaAa
Slate 8006.70:1AaAa
Slate 9008.18:1AaAa
Black9.62:1AaAa
Colour vision deficiency
true color
protanopia · #CEB72A
deuteranopia · #BCAA4D
tritanopia · #00C6AF

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. #02cb3f 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.

#F1FDF5
#E3FCEB
#C1FBD2
#90FEB1
#58FD8A
#21FD64
#02F24B
#02cb3f
#02A232
#067427
#044919
Base = 700Lightest = 50 · #F1FDF5Darkest = 950 · #044919Text 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 0.057 145.6);
  --brand-100: oklch(0.94 0.090 145.6);
  --brand-200: oklch(0.88 0.136 145.6);
  --brand-300: oklch(0.80 0.176 145.6);
  --brand-400: oklch(0.72 0.208 145.6);
  --brand-500: oklch(0.64 0.226 145.6);
  --brand-600: oklch(0.56 0.226 145.6);
  --brand-700: oklch(0.48 0.212 145.6);
  --brand-800: oklch(0.40 0.190 145.6);
  --brand-900: oklch(0.32 0.158 145.6);
  --brand-950: oklch(0.24 0.124 145.6);
}

Colors that work with #02cb3f

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#F4FAF6
Tinted page background
Border#C0EDCD
Hairlines and dividers
Muted text#4B9B63
Captions on the surface
Accent#CD00C2
Second voice, not a rival
Dark variant#017E27
Hover, pressed, headers
Light variant#E6FFED
Selected rows, tints
Dark surface#142419
Dark-mode background
Hover#02A834
One step down in lightness
Pressed#018429
Two steps down
Disabled#89B496
Chroma pulled out
Focus ring#00E144
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 #02cb3f

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 #017E27
Safe as a 1px border on white
No — use #02A834

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
  • Weight60/100
  • TemperatureCool
  • ApproachabilityReserved

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#CB028E
Analogous left#2ACB02
Analogous right#02CBA3
Split-complement 1#A302CB
Split-complement 2#CB022A
Triadic 1#3F02CB
Triadic 2#CB3F02
Tetradic#022ACB
On the wheel
Base+30°−30°+120°+240°+180°138°

#02cb3f sits at 138°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red0.8%
Green79.6%
Blue24.7%
R · 0–255
2
0x02
G · 0–255
203
0xcb
B · 0–255
63
0x3f

CMYK percentages

Cyan99.0%
Magenta0.0%
Yellow69.0%
Key (black)20.4%

Total ink coverage is 188%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#02cb3f text on a black background

contrast 9.62:1

Card sample

#02cb3f text on a white background

contrast 2.18:1

Card sample

#02cb3f on grey

1.99:1

#02cb3f on its own surface

2.06:1

#02cb3f on its dark surface

7.42:1

CSS3 live lab

Text font color

The quick brown fox

color: #02cb3f;
Background color
Panel with #02cb3f background
background-color: #02cb3f;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #02cb3f;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(2, 203, 63, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(2, 203, 63, 0.45);
Border & gradient
Gradient panel
border: 3px solid #02cb3f;
background: linear-gradient(135deg, #02cb3f, #02CBC5);
Gradient text

Gradient headline

background: linear-gradient(90deg, #02cb3f, #029FCB);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #02cb3f;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #02cb3f;
caret-color: #02cb3f;
Left rule
Pull quote or callout
border-left: 4px solid #02cb3f;
Ring + tint
Selected chip
background: #E6FFED;
box-shadow: inset 0 0 0 2px #02cb3f;
Conic badge
68%
background: conic-gradient(#02cb3f 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #02cb3f 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(2, 203, 63, 0.5)
rgb(2 203 63 / 50%)
#02cb3f80
hsl(138 98% 40% / 50%)
color-mix(in srgb, #02cb3f 50%, transparent)
Alpha8-digit hexFlat on white
10%#02cb3f1a#E6FAEC
20%#02cb3f33#CCF5D9
40%#02cb3f66#9AEAB2
60%#02cb3f99#67E08C
80%#02cb3fcc#35D565

Gradients from #02cb3f

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, #0EFD56, #02cb3f 45%, #017E27);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #02cb3f, #02A4AD);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #02cb3f, #CB028E);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #2CFD6B 0%, #02cb3f 45%, #017E27 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF6, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #49FC04 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #02E9CF 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #017E27 0%, transparent 65%), #02cb3f;

Monochromatic scale

Palettes built from #02cb3f

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.

#02cb3f 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 9.62:1.

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.

#02cb3f, answered

What color is #02cb3f?

#02cb3f is a dark electric green, closest to Lime Green (ΔE2000 2.2). It sits at 138° on the hue wheel with 98% saturation and 40% lightness, which reads as cool.

What is the RGB value of #02cb3f?

rgb(2, 203, 63) — 2 red, 203 green and 63 blue out of 255, or 0.8% / 79.6% / 24.7% by channel.

What is #02cb3f in HSL and HSV?

hsl(138, 98%, 40%) and hsv(138, 99%, 80%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #02cb3f a light or a dark color?

It is a mid-tone. Relative luminance is 0.4308 and perceived brightness is 62%, so black text on it reaches 9.62:1.

Should I use black or white text on #02cb3f?

Black. It scores 9.62:1 against #02cb3f, versus 2.18:1 for white — AAA at any size.

Is #02cb3f accessible on a white background?

#02cb3f on white scores 2.18:1, which fails WCAG AA at every size. Darken it to #01892B to reach 4.5:1, or #016620 for 7:1.

What is the complementary color of #02cb3f?

#CB028E sits directly opposite on the wheel. Softer options are the split-complements #A302CB and #CB022A, which give the same contrast with far less vibration.

What colors go well with #02cb3f?

For interface work: #F4FAF6 as the surface, #C0EDCD for borders, #4B9B63 for secondary text, #CD00C2 as an accent and #017E27 for hover and pressed states. For a palette, the analogous pair #2ACB02 and #02CBA3 stays calm, while #CB028E is the loudest partner.

What is #02cb3f in CMYK for printing?

cmyk(99%, 0%, 69%, 20%). 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 #02cb3f warm or cool?

Cool — it scores 70 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #0FCB02; nudged cooler, #00CD89.

Which Tailwind color is closest to #02cb3f?

The green family — its 500 step is #22c55e, ΔE2000 4.5 away. That is a visible difference, so define #02cb3f as a custom token rather than reaching for the built-in.

How do I use #02cb3f in Tailwind CSS?

Inline it as an arbitrary value with bg-[#02cb3f] or text-[#02cb3f], 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 #02cb3f with 50% opacity?

rgba(2, 203, 63, 0.5), or #02cb3f80 in eight-digit hex. Over white that composites to #81E59F; over black, #016620.

Is #02cb3f a web-safe color?

No. The nearest web-safe colour is #00CC33, ΔE2000 1.2 away. The palette only matters for legacy displays and some email clients now.

What does the color #02cb3f 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 #02cb3f?

The safest is same-hue elevation: linear-gradient(135deg, #0EFD56, #02cb3f 45%, #017E27). For more colour, a short hue run to #02A4AD keeps it rich without turning muddy.

Work with #02cb3f in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #02cb3f at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.