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green · cool

#02f331

a balanced, electric green · cool · closest name: Lime

Token name suggestion: Studio Basil

RGB
2, 243, 49
HSL
132°, 98%, 48%
CMYK
99, 0, 80, 5
Luminance
0.6434

#02f331 is a balanced electric green, 132° on the wheel and 67/100 on the cool side. Put black text on it (13.87:1). As text it scores 1.51:1 on white — use #01891C instead. Nearest name is Lime, nearest Tailwind family is lime.

hsl(132 98% 48%)rgb(2 243 49)Base step 600AAA inkCool

At a glance

Every number on this page in one read: what #02f331 is made of, how bright it looks, and which way it leans.

Hex
#02f331
Hue
132°
green
Saturation
98%
electric
Lightness
48%
balanced
Brightness
95%
HSV value
Perceived
73%
weighted brightness
Luminance
0.6434
WCAG relative
Temperature
Cool
67/100 cool
Color family
Green
Tone
Electric
Best ink
Black
13.87:1
Closest name
Lime
ΔE2000 3.2
Chroma
109.2
LCH, 0–130ish
OKLCH L
0.837
perceptual lightness
Tailwind
lime
500 · ΔE 11.8
Web-safe
#00FF33
nearest of 216
Where it sits
Hue132° of 360°
Saturation98%
Lightness48%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #02f331.

Temperature
Warm ← → Cool67% 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%
Green100%
Blue0%

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

Every format

HEX#02f331
HEX (8-digit)#02f331ff
RGBrgb(2, 243, 49)
RGBArgba(2, 243, 49, 1)
HSLhsl(132, 98%, 48%)
HSV / HSBhsv(132, 99%, 95%)
HWBhwb(132 1% 5%)
CMYKcmyk(99%, 0%, 80%, 5%)
LABlab(84.1 -81.5 72.7)
LCHlch(84.1 109.2 138.3)
OKLCHoklch(0.837 0.273 143.7)
XYZ (D65)xyz(32.63, 64.33, 13.60)
Decimal193329
Display P3color(display-p3 0.008 0.953 0.192)
Web-safe#00FF33

Copy-ready code

every platformclick to select
/* CSS */
color: #02f331;
background-color: #02f331;
/* CSS custom property */
--brand: #02f331;
/* Tailwind (arbitrary) */
class="text-[#02f331] bg-[#02f331]"
/* SCSS */
$brand: #02f331;
/* SwiftUI */
Color(red: 0.008, green: 0.953, blue: 0.192)
/* UIKit */
UIColor(red: 0.008, green: 0.953, blue: 0.192, alpha: 1)
/* Android XML */
<color name="brand">#02F331</color>
/* Android Compose */
Color(0xFF02F331)
/* Flutter */
Color(0xFF02F331)
/* Python / OpenCV (BGR) */
(49, 243, 2)
/* Python / PIL (RGB) */
(2, 243, 49)
/* Java AWT */
new Color(2, 243, 49)
/* .NET */
Color.FromArgb(255, 2, 243, 49)
/* OpenGL / Unity (0–1) */
(0.0078f, 0.9529f, 0.1922f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{2,243,49}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #02f331 85%, white);
border-color: color-mix(in oklab, #02f331 40%, transparent);
/* theme-aware in one line */
color: light-dark(#017E19, #D3EED8);
/* relative colour syntax */
--hover: hsl(from #02f331 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: #F1FEF4;
  --brand-100: #E3FCE8;
  --brand-200: #C1FBCC;
  --brand-300: #90FEA5;
  --brand-400: #58FE78;
  --brand-500: #20FD4B;
  --brand-600: #02f331;
  --brand-700: #02CA29;
  --brand-800: #01A221;
  --brand-900: #06751B;
  --brand-950: #044911;
  --brand: #02f331;
  --brand-ink: #000000;
  --brand-surface: #F4FAF5;
  --brand-border: #C0EDC9;
  --brand-hover: #02CF2A;
  --brand-pressed: #01AC23;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #142417;
    --brand-ink: #D3EED8;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F1FEF4',
        100: '#E3FCE8',
        200: '#C1FBCC',
        300: '#90FEA5',
        400: '#58FE78',
        500: '#20FD4B',
        600: '#02f331',
        700: '#02CA29',
        800: '#01A221',
        900: '#06751B',
        950: '#044911',
        DEFAULT: '#02f331',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F1FEF4,
  '100': #E3FCE8,
  '200': #C1FBCC,
  '300': #90FEA5,
  '400': #58FE78,
  '500': #20FD4B,
  '600': #02f331,
  '700': #02CA29,
  '800': #01A221,
  '900': #06751B,
  '950': #044911,
);
$brand-base: #02f331;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F1FEF4", "$type": "color" },
      "100": { "$value": "#E3FCE8", "$type": "color" },
      "200": { "$value": "#C1FBCC", "$type": "color" },
      "300": { "$value": "#90FEA5", "$type": "color" },
      "400": { "$value": "#58FE78", "$type": "color" },
      "500": { "$value": "#20FD4B", "$type": "color" },
      "600": { "$value": "#02f331", "$type": "color" },
      "700": { "$value": "#02CA29", "$type": "color" },
      "800": { "$value": "#01A221", "$type": "color" },
      "900": { "$value": "#06751B", "$type": "color" },
      "950": { "$value": "#044911", "$type": "color" }
    },
    "brandInk": { "$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 #02f331 · 13.87:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.51:1
AA fail · AA large fail · AAA fail
Aa
Black text · 13.87:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #02f331 as text scores 1.51:1 on white and 13.87:1 on black.
Best tinted ink on it, if plain black or white feels flat: #017E19 at 3.47:1.

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
#01891C · 4.57:1
AA on white−21% L
#01891C
The quick fox
#016514 · 7.31:1
AAA on white−28% L
#016514
The quick fox
#02f331 · 13.87:1
AA on blackalready passes
#02f331
The quick fox
#02f331 · 13.87:1
AAA on blackalready passes
#02f331

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #01AC23 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
#02f331 on white: 1.51:1
AA ✗ fail · AA-large · AAA
Aa
#02f331 on black: 13.87:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #02f331 as text on that neutral, and that neutral as text on #02f331.

NeutralRatioBoth directions
White1.51:1AaAa
Slate 501.45:1AaAa
Slate 1001.38:1AaAa
Slate 2001.23:1AaAa
Slate 3001.02:1AaAa
Slate 4001.69:1AaAa
Slate 5003.14:1AaAa
Slate 6005.00:1AaAa
Slate 7006.84:1AaAa
Slate 8009.66:1AaAa
Slate 90011.79:1AaAa
Black13.87:1AaAa
Colour vision deficiency
true color
protanopia · #F8DB00
deuteranopia · #E3CC4A
tritanopia · #00ECD0

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. #02f331 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.

#F1FEF4
#E3FCE8
#C1FBCC
#90FEA5
#58FE78
#20FD4B
#02f331
#02CA29
#01A221
#06751B
#044911
Base = 600Lightest = 50 · #F1FEF4Darkest = 950 · #044911Text 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 0.068 143.7);
  --brand-100: oklch(0.94 0.109 143.7);
  --brand-200: oklch(0.88 0.164 143.7);
  --brand-300: oklch(0.80 0.213 143.7);
  --brand-400: oklch(0.72 0.251 143.7);
  --brand-500: oklch(0.64 0.273 143.7);
  --brand-600: oklch(0.56 0.273 143.7);
  --brand-700: oklch(0.48 0.257 143.7);
  --brand-800: oklch(0.40 0.229 143.7);
  --brand-900: oklch(0.32 0.191 143.7);
  --brand-950: oklch(0.24 0.150 143.7);
}

Colors that work with #02f331

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#F4FAF5
Tinted page background
Border#C0EDC9
Hairlines and dividers
Muted text#4B9B5A
Captions on the surface
Accent#E700F5
Second voice, not a rival
Dark variant#017E19
Hover, pressed, headers
Light variant#E6FFEB
Selected rows, tints
Dark surface#142417
Dark-mode background
Hover#02CF2A
One step down in lightness
Pressed#01AC23
Two steps down
Disabled#A2C3A8
Chroma pulled out
Focus ring#0AFF3A
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 #02f331

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
  • Brand accents, badges and data highlights
  • Chart series and data categories
Use with care
  • Text of any size on white — fails WCAG AA
  • Full-page backgrounds — tiring over long sessions
  • 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 #017E19
Safe as a 1px border on white
No — use #01AC23

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 mid lightness keeps it versatile in both themes.

Worth knowing

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

Reads as
  • FormalityLow
  • EnergyHigh
  • Weight52/100
  • 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#F302C4
Analogous left#4BF302
Analogous right#02F3A9
Split-complement 1#A902F3
Split-complement 2#F3024B
Triadic 1#3102F3
Triadic 2#F33102
Tetradic#024BF3
On the wheel
Base+30°−30°+120°+240°+180°132°

#02f331 sits at 132°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red0.8%
Green95.3%
Blue19.2%
R · 0–255
2
0x02
G · 0–255
243
0xf3
B · 0–255
49
0x31

CMYK percentages

Cyan99.2%
Magenta0.0%
Yellow79.8%
Key (black)4.7%

Total ink coverage is 184%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#02f331 text on a black background

contrast 13.87:1

Card sample

#02f331 text on a white background

contrast 1.51:1

Card sample

#02f331 on grey

1.38:1

#02f331 on its own surface

1.43:1

#02f331 on its dark surface

10.71:1

CSS3 live lab

Text font color

The quick brown fox

color: #02f331;
Background color
Panel with #02f331 background
background-color: #02f331;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #02f331;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(2, 243, 49, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(2, 243, 49, 0.45);
Border & gradient
Gradient panel
border: 3px solid #02f331;
background: linear-gradient(135deg, #02f331, #02F3D2);
Gradient text

Gradient headline

background: linear-gradient(90deg, #02f331, #02D8F3);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #02f331;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #02f331;
caret-color: #02f331;
Left rule
Pull quote or callout
border-left: 4px solid #02f331;
Ring + tint
Selected chip
background: #E6FFEB;
box-shadow: inset 0 0 0 2px #02f331;
Conic badge
68%
background: conic-gradient(#02f331 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #02f331 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, 243, 49, 0.5)
rgb(2 243 49 / 50%)
#02f33180
hsl(132 98% 48% / 50%)
color-mix(in srgb, #02f331 50%, transparent)
Alpha8-digit hexFlat on white
10%#02f3311a#E6FEEA
20%#02f33133#CCFDD6
40%#02f33166#9AFAAD
60%#02f33199#67F883
80%#02f331cc#35F55A

Gradients from #02f331

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, #35FD5C, #02f331 45%, #017E19);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #02f331, #02D4C9);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #02f331, #F302C4);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #53FE74 0%, #02f331 45%, #017E19 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F4FAF5, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #7CFD2B 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #16FDCA 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #017E19 0%, transparent 65%), #02f331;

Monochromatic scale

Palettes built from #02f331

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.

#02f331 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 13.87:1.

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.

#02f331, answered

What color is #02f331?

#02f331 is a balanced electric green, closest to Lime (ΔE2000 3.2). It sits at 132° on the hue wheel with 98% saturation and 48% lightness, which reads as cool.

What is the RGB value of #02f331?

rgb(2, 243, 49) — 2 red, 243 green and 49 blue out of 255, or 0.8% / 95.3% / 19.2% by channel.

What is #02f331 in HSL and HSV?

hsl(132, 98%, 48%) and hsv(132, 99%, 95%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #02f331 a light or a dark color?

It is a light color. Relative luminance is 0.6434 and perceived brightness is 73%, so black text on it reaches 13.87:1.

Should I use black or white text on #02f331?

Black. It scores 13.87:1 against #02f331, versus 1.51:1 for white — AAA at any size.

Is #02f331 accessible on a white background?

#02f331 on white scores 1.51:1, which fails WCAG AA at every size. Darken it to #01891C to reach 4.5:1, or #016514 for 7:1.

What is the complementary color of #02f331?

#F302C4 sits directly opposite on the wheel. Softer options are the split-complements #A902F3 and #F3024B, which give the same contrast with far less vibration.

What colors go well with #02f331?

For interface work: #F4FAF5 as the surface, #C0EDC9 for borders, #4B9B5A for secondary text, #E700F5 as an accent and #017E19 for hover and pressed states. For a palette, the analogous pair #4BF302 and #02F3A9 stays calm, while #F302C4 is the loudest partner.

What is #02f331 in CMYK for printing?

cmyk(99%, 0%, 80%, 5%). 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 #02f331 warm or cool?

Cool — it scores 67 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #2BF302; nudged cooler, #00F589.

Which Tailwind color is closest to #02f331?

The lime family — its 500 step is #84cc16, ΔE2000 11.8 away. That is a visible difference, so define #02f331 as a custom token rather than reaching for the built-in.

How do I use #02f331 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#02f331] or text-[#02f331], 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 #02f331 with 50% opacity?

rgba(2, 243, 49, 0.5), or #02f33180 in eight-digit hex. Over white that composites to #81F998; over black, #017A19.

Is #02f331 a web-safe color?

No. The nearest web-safe colour is #00FF33, ΔE2000 2.5 away. The palette only matters for legacy displays and some email clients now.

What does the color #02f331 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 #02f331?

The safest is same-hue elevation: linear-gradient(135deg, #35FD5C, #02f331 45%, #017E19). For more colour, a short hue run to #02D4C9 keeps it rich without turning muddy.

Work with #02f331 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #02f331 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.