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green · warm

#afe239

a balanced, vivid green · warm · closest name: Yellow Green

Token name suggestion: Studio Jade

RGB
175, 226, 57
HSL
78°, 74%, 56%
CMYK
23, 0, 75, 11
Luminance
0.6380

#afe239 is a balanced vivid green, 78° on the wheel and 40/100 on the cool side. Put black text on it (13.76:1). As text it scores 1.53:1 on white — use #5E7F13 instead. Nearest name is Yellow Green, nearest Tailwind family is lime.

hsl(78 74% 56%)rgb(175 226 57)Base step 500AAA inkWarm

At a glance

Every number on this page in one read: what #afe239 is made of, how bright it looks, and which way it leans.

Hex
#afe239
Hue
78°
green
Saturation
74%
vivid
Lightness
56%
balanced
Brightness
89%
HSV value
Perceived
78%
weighted brightness
Luminance
0.6380
WCAG relative
Temperature
Warm
40/100 cool
Color family
Green
Tone
Vivid
Best ink
Black
13.76:1
Closest name
Yellow Green
ΔE2000 5.2
Chroma
81.7
LCH, 0–130ish
OKLCH L
0.848
perceptual lightness
Tailwind
lime
500 · ΔE 6.9
Web-safe
#99CC33
nearest of 216
Where it sits
Hue78° of 360°
Saturation74%
Lightness56%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #afe239.

Temperature
Warm ← → Cool40% cool

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

Luminance by channel
Red14%
Green85%
Blue0%

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

Every format

HEX#afe239
HEX (8-digit)#afe239ff
RGBrgb(175, 226, 57)
RGBArgba(175, 226, 57, 1)
HSLhsl(78, 74%, 56%)
HSV / HSBhsv(78, 75%, 89%)
HWBhwb(78 22% 11%)
CMYKcmyk(23%, 0%, 75%, 11%)
LABlab(83.9 -39.0 71.8)
LCHlch(83.9 81.7 118.5)
OKLCHoklch(0.848 0.195 125.4)
XYZ (D65)xyz(45.61, 63.80, 13.78)
Decimal11526713
Display P3color(display-p3 0.686 0.886 0.224)
Web-safe#99CC33

Copy-ready code

every platformclick to select
/* CSS */
color: #afe239;
background-color: #afe239;
/* CSS custom property */
--brand: #afe239;
/* Tailwind (arbitrary) */
class="text-[#afe239] bg-[#afe239]"
/* SCSS */
$brand: #afe239;
/* SwiftUI */
Color(red: 0.686, green: 0.886, blue: 0.224)
/* UIKit */
UIColor(red: 0.686, green: 0.886, blue: 0.224, alpha: 1)
/* Android XML */
<color name="brand">#AFE239</color>
/* Android Compose */
Color(0xFFAFE239)
/* Flutter */
Color(0xFFAFE239)
/* Python / OpenCV (BGR) */
(57, 226, 175)
/* Python / PIL (RGB) */
(175, 226, 57)
/* Java AWT */
new Color(175, 226, 57)
/* .NET */
Color.FromArgb(255, 175, 226, 57)
/* OpenGL / Unity (0–1) */
(0.6863f, 0.8863f, 0.2235f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{175,226,57}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #afe239 85%, white);
border-color: color-mix(in oklab, #afe239 40%, transparent);
/* theme-aware in one line */
color: light-dark(#536F10, #E6EED3);
/* relative colour syntax */
--hover: hsl(from #afe239 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: #F9FCF3;
  --brand-100: #F3F9E7;
  --brand-200: #E6F4C8;
  --brand-300: #D7F19D;
  --brand-400: #C4E96C;
  --brand-500: #afe239;
  --brand-600: #9FD51F;
  --brand-700: #84B21A;
  --brand-800: #6A8E15;
  --brand-900: #4E6713;
  --brand-950: #31400C;
  --brand: #afe239;
  --brand-ink: #000000;
  --brand-surface: #F9FAF4;
  --brand-border: #DFEDC0;
  --brand-hover: #A0D820;
  --brand-pressed: #89B91B;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #1F2414;
    --brand-ink: #E6EED3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F9FCF3',
        100: '#F3F9E7',
        200: '#E6F4C8',
        300: '#D7F19D',
        400: '#C4E96C',
        500: '#afe239',
        600: '#9FD51F',
        700: '#84B21A',
        800: '#6A8E15',
        900: '#4E6713',
        950: '#31400C',
        DEFAULT: '#afe239',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F9FCF3,
  '100': #F3F9E7,
  '200': #E6F4C8,
  '300': #D7F19D,
  '400': #C4E96C,
  '500': #afe239,
  '600': #9FD51F,
  '700': #84B21A,
  '800': #6A8E15,
  '900': #4E6713,
  '950': #31400C,
);
$brand-base: #afe239;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F9FCF3", "$type": "color" },
      "100": { "$value": "#F3F9E7", "$type": "color" },
      "200": { "$value": "#E6F4C8", "$type": "color" },
      "300": { "$value": "#D7F19D", "$type": "color" },
      "400": { "$value": "#C4E96C", "$type": "color" },
      "500": { "$value": "#afe239", "$type": "color" },
      "600": { "$value": "#9FD51F", "$type": "color" },
      "700": { "$value": "#84B21A", "$type": "color" },
      "800": { "$value": "#6A8E15", "$type": "color" },
      "900": { "$value": "#4E6713", "$type": "color" },
      "950": { "$value": "#31400C", "$type": "color" }
    },
    "brandInk": { "$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 #afe239 · 13.76:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 1.53:1
AA fail · AA large fail · AAA fail
Aa
Black text · 13.76:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #afe239 as text scores 1.53:1 on white and 13.76:1 on black.
Best tinted ink on it, if plain black or white feels flat: #536F10 at 3.77:1.

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
#5E7F13 · 4.64:1
AA on white−27% L
#5E7F13
The quick fox
#47600E · 7.12:1
AAA on white−34% L
#47600E
The quick fox
#afe239 · 13.76:1
AA on blackalready passes
#afe239
The quick fox
#afe239 · 13.76:1
AAA on blackalready passes
#afe239

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #79A218 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
#afe239 on white: 1.53:1
AA ✗ fail · AA-large · AAA
Aa
#afe239 on black: 13.76:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #afe239 as text on that neutral, and that neutral as text on #afe239.

NeutralRatioBoth directions
White1.53:1AaAa
Slate 501.46:1AaAa
Slate 1001.39:1AaAa
Slate 2001.24:1AaAa
Slate 3001.03:1AaAa
Slate 4001.68:1AaAa
Slate 5003.12:1AaAa
Slate 6004.97:1AaAa
Slate 7006.79:1AaAa
Slate 8009.59:1AaAa
Slate 90011.70:1AaAa
Black13.76:1AaAa
Colour vision deficiency
true color
protanopia · #EED30F
deuteranopia · #E7D049
tritanopia · #B7D7C2

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. #afe239 is pinned to step 500; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F9FCF3
#F3F9E7
#E6F4C8
#D7F19D
#C4E96C
#afe239
#9FD51F
#84B21A
#6A8E15
#4E6713
#31400C
Base = 500Lightest = 50 · #F9FCF3Darkest = 950 · #31400CText 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 0.049 125.4);
  --brand-100: oklch(0.94 0.078 125.4);
  --brand-200: oklch(0.88 0.117 125.4);
  --brand-300: oklch(0.80 0.152 125.4);
  --brand-400: oklch(0.72 0.179 125.4);
  --brand-500: oklch(0.64 0.195 125.4);
  --brand-600: oklch(0.56 0.195 125.4);
  --brand-700: oklch(0.48 0.183 125.4);
  --brand-800: oklch(0.40 0.164 125.4);
  --brand-900: oklch(0.32 0.136 125.4);
  --brand-950: oklch(0.24 0.107 125.4);
}

Colors that work with #afe239

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#F9FAF4
Tinted page background
Border#DFEDC0
Hairlines and dividers
Muted text#839B4B
Captions on the surface
Accent#3E35E6
Second voice, not a rival
Dark variant#536F10
Hover, pressed, headers
Light variant#F6FCE9
Selected rows, tints
Dark surface#1F2414
Dark-mode background
Hover#A0D820
One step down in lightness
Pressed#89B91B
Two steps down
Disabled#CBD2B9
Chroma pulled out
Focus ring#BAEF41
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 #afe239

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 #536F10
Safe as a 1px border on white
No — use #79A218

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 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
  • FormalityMedium
  • EnergyMedium-high
  • Weight45/100
  • TemperatureWarm
  • ApproachabilityHigh

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#6C39E2
Analogous left#E2C039
Analogous right#5BE239
Split-complement 1#395BE2
Split-complement 2#C039E2
Triadic 1#39AFE2
Triadic 2#E239AF
Tetradic#39E2C0
On the wheel
Base+30°−30°+120°+240°+180°78°

#afe239 sits at 78°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red68.6%
Green88.6%
Blue22.4%
R · 0–255
175
0xaf
G · 0–255
226
0xe2
B · 0–255
57
0x39

CMYK percentages

Cyan22.6%
Magenta0.0%
Yellow74.8%
Key (black)11.4%

Total ink coverage is 109%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#afe239 text on a black background

contrast 13.76:1

Card sample

#afe239 text on a white background

contrast 1.53:1

Card sample

#afe239 on grey

1.39:1

#afe239 on its own surface

1.45:1

#afe239 on its dark surface

10.42:1

CSS3 live lab

Text font color

The quick brown fox

color: #afe239;
Background color
Panel with #afe239 background
background-color: #afe239;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #afe239;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(175, 226, 57, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(175, 226, 57, 0.45);
Border & gradient
Gradient panel
border: 3px solid #afe239;
background: linear-gradient(135deg, #afe239, #3EE239);
Gradient text

Gradient headline

background: linear-gradient(90deg, #afe239, #39E25E);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #afe239;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #afe239;
caret-color: #afe239;
Left rule
Pull quote or callout
border-left: 4px solid #afe239;
Ring + tint
Selected chip
background: #F6FCE9;
box-shadow: inset 0 0 0 2px #afe239;
Conic badge
68%
background: conic-gradient(#afe239 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #afe239 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(175, 226, 57, 0.5)
rgb(175 226 57 / 50%)
#afe23980
hsl(78 74% 56% / 50%)
color-mix(in srgb, #afe239 50%, transparent)
Alpha8-digit hexFlat on white
10%#afe2391a#F7FCEB
20%#afe23933#EFF9D7
40%#afe23966#DFF3B0
60%#afe23999#CFEE88
80%#afe239cc#BFE861

Gradients from #afe239

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, #C5EA6E, #afe239 45%, #536F10);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #afe239, #20DC2A);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #afe239, #6C39E2);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #CFEE89 0%, #afe239 45%, #536F10 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #F9FAF4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #E8C466 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #65E654 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #536F10 0%, transparent 65%), #afe239;

Monochromatic scale

Palettes built from #afe239

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.

#afe239 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 13.76:1.

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.

#afe239, answered

What color is #afe239?

#afe239 is a balanced vivid green, closest to Yellow Green (ΔE2000 5.2). It sits at 78° on the hue wheel with 74% saturation and 56% lightness, which reads as warm.

What is the RGB value of #afe239?

rgb(175, 226, 57) — 175 red, 226 green and 57 blue out of 255, or 68.6% / 88.6% / 22.4% by channel.

What is #afe239 in HSL and HSV?

hsl(78, 74%, 56%) and hsv(78, 75%, 89%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #afe239 a light or a dark color?

It is a light color. Relative luminance is 0.6380 and perceived brightness is 78%, so black text on it reaches 13.76:1.

Should I use black or white text on #afe239?

Black. It scores 13.76:1 against #afe239, versus 1.53:1 for white — AAA at any size.

Is #afe239 accessible on a white background?

#afe239 on white scores 1.53:1, which fails WCAG AA at every size. Darken it to #5E7F13 to reach 4.5:1, or #47600E for 7:1.

What is the complementary color of #afe239?

#6C39E2 sits directly opposite on the wheel. Softer options are the split-complements #395BE2 and #C039E2, which give the same contrast with far less vibration.

What colors go well with #afe239?

For interface work: #F9FAF4 as the surface, #DFEDC0 for borders, #839B4B for secondary text, #3E35E6 as an accent and #536F10 for hover and pressed states. For a palette, the analogous pair #E2C039 and #5BE239 stays calm, while #6C39E2 is the loudest partner.

What is #afe239 in CMYK for printing?

cmyk(23%, 0%, 75%, 11%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #afe239 warm or cool?

Warm — it scores 40 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #E2D739; nudged cooler, #70E437.

Which Tailwind color is closest to #afe239?

The lime family — its 500 step is #84cc16, ΔE2000 6.9 away. That is a visible difference, so define #afe239 as a custom token rather than reaching for the built-in.

How do I use #afe239 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#afe239] or text-[#afe239], 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 #afe239 with 50% opacity?

rgba(175, 226, 57, 0.5), or #afe23980 in eight-digit hex. Over white that composites to #D7F19C; over black, #58711D.

Is #afe239 a web-safe color?

No. The nearest web-safe colour is #99CC33, ΔE2000 5.5 away. The palette only matters for legacy displays and some email clients now.

What does the color #afe239 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 #afe239?

The safest is same-hue elevation: linear-gradient(135deg, #C5EA6E, #afe239 45%, #536F10). For more colour, a short hue run to #20DC2A keeps it rich without turning muddy.

Work with #afe239 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #afe239 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.